VT250 carb issues

[328FTW]

My VT250 carbs are being a complete whore, one cylinder after the other keeps dropping out. I got it good then it had a tantrum and the front cylinder is totally dead again. Spark is strong, tried several modules and coils as well as leads, new plugs. It's the carbs, it's fuel.

So before it went totally dead at around 6000rpm it'd flatspot bad, this got worse till the cylinder dropped out totally. Some things to note here is for one the carb boots are a little shitty looking and may not be totally sealing, are new ones available? Are they something generic or more specialist? Also given the age and problems present I'd like to give the carbs a tickle up, so can you get kits easily enough for them? There are some jets on trademe but what about new floats or whatever, can they be had?


Or maybe I'm totally missing something and there is somewhere else I should start. But I used carb cleaner and a compressor on everything. Still seems to get worse, I even did the filter and lines to get rid of any residue but it's still not working. Maybe I need to overnight soak the things in something.

Suggestions?

[unstuck]

Have you given the intake boots a spray of something while the bike is running, or a bit of light oil?? That should tell you weather or not your intake is leaking.

[328FTW]

Have you given the intake boots a spray of something while the bike is running, or a bit of light oil?? That should tell you weather or not your intake is leaking.

I did, didn't seem to make much of a difference but then again I'm still unsure half the time if the cylinder is even getting fuel. It won't hold an idle so I have to crank it open a bit to keep it running so it's not pulling a full vacuum which makes that test of somewhat small worth. If I can get it to pull a good vacuum then it would be more helpful.

Basically it's running like a true sack of shit XD

[unstuck]

Is the plug dry on the cylinder you suspect? If so no fuel. Time to look at the carbies again.:yes:

[328FTW]

Bone dry. But every now and then it fires into life. I'm just looking for something I've missed. I've had these carbs apart a good 5 times and been quite careful in putting them back together. Fuel tap works, fuel lines and filter are new, everything seems clean but it delves into running like a sack of shit when it feels like it.

Bike is going to land up in the waikato river off the back of a ute at this rate /problem.

[Akzle]

when tuning carbs i believe it's correct to start at the top and work your way down.
ie, go hero on some nice straight roads, tweak your jet/needle
then your midrange, then your idle.

air pilot circuit ok?
slides sliding?
diagphrams in tact?
throttle linkage working?
fuel in bowl for affected cylinder?

good luck...

-edit-
and did you bench sync your carbs before putting them back on?

[Drew]

Bone dry. But every now and then it fires into life. I'm just looking for something I've missed. I've had these carbs apart a good 5 times and been quite careful in putting them back together. Fuel tap works, fuel lines and filter are new, everything seems clean but it delves into running like a sack of shit when it feels like it.

Bike is going to land up in the waikato river off the back of a ute at this rate /problem.


Undo the drain screws on the carb bowls. Suck on the vacuum line on the fuel tap, and see if petrol comes out of the drains.

Sounds to me liked blocked float needles.

[spanner spinner]

Balance your carbs, V twins are very picky about carb balance to the point that they will drop a cylinder. As this looks like the only carb issue that you haven't checked out or cleaned it is worth doing. also have you checked the compression on the cylinder that's not running, a low compression cylinder will not draw fuel out of the carb. balancing carbs on a v twin is easy to do as there is only one adjustment screw, either borrow a set of vacuum gages or book it in as should be a quick and cheep job for a shop to do.

[328FTW]

Balance your carbs, V twins are very picky about carb balance to the point that they will drop a cylinder. As this looks like the only carb issue that you haven't checked out or cleaned it is worth doing. also have you checked the compression on the cylinder that's not running, a low compression cylinder will not draw fuel out of the carb. balancing carbs on a v twin is easy to do as there is only one adjustment screw, either borrow a set of vacuum gages or book it in as should be a quick and cheep job for a shop to do.

I did balance them :\ Compression is good on the dead cylinder, I did A LOT of checking which is why I'm starting to get frustrated. At one point I had jambed slides but I fixed that, the diaphragms look perfect. It really acts like a blocked needle but I've checked that so many times it makes my head spin.

And yes bowl is full, I mad sure it had a supply. I might drain the tank and clean it out. I'll have to start at the start and go right through again.

[unstuck]

If the needle valve was blocked/not working you would have no fuel in the bowl. I would be looking at the delivery system between the bowl and cylinder.:Punk::Punk:

[ducatilover]

They're known for shitting fuel taps, sometimes you'll have a fuel leak through the diaphragm in to #1 cyl. Sometimes you don't...
If it has spark, it may not be the kill switch, or cdi.

Some have little filters above the float needles
The fuel filter in teh tank may be fucked too
The fuel line between the carbs may be fugged too etc etc


What I would do is:
Clean carbs in pinesol or something similar, or even thinners (if you don't have an ultrasonic cleaner)
Check fuel tap and filter
Check tank vent
Set carbs up to fact specs
Duct tape/silicone the intake boots if they're cracked
BIG FUCKING HAMMER

If they don't work, you probably don't have a carb issue :lol:

[smitty308]

what filter and lines did you clean out

[The Reibz]

Info from the boys at factorypro. Refered to this many a time...

[328FTW]

Ok so here is what I did, went back to basics. Got a spare set of VTR carbs, took them to bits. Cleaned EVERYTHING. New seals and whatnot. I bench set them, and put it all together back on the bike. Also put in fresh fuel, then fine tuned the balance to finish.

Runs on both cylinders most of the time and seems healthy till you get up in the revs then it splutters and is way down on power. But I do note there is a lot of backfiring and some of it sounds like it might be coming from the carb area and it wouldn't surprise me if that's the cam being on the wrong tooth on the front cylinder because it's been a real problem child. It got it going well enough to ride it to the shop where I'll be replacing the motor. Then I can check my crank pickup gap and all that stuff, I think there are some cumulative other issues. All these little things are amounting to making it one big problem.

I'll set the old carbs right as rain and put them on the new motor, the main filter was the one I cleaned. The ones in the carbs were clear as well. There didn't seem to be anything specifically wrong, I'm just starting to shift my thinking to that the carbs aren't the single root of problems. I miss my old motor, the one that half the piston is on my desk and the other half is scattered along some south auckland road.

[ducatilover]

What a fucking troublesome little bastard this thing is!
Have you done a comp or leak down test? I've had issues with bikes getting hot and trying to seize :lol: but it wouldn't be highly likely on a VT motor.

Is it fine when cold? If so, I'd warm the leads up with a hair dryer and the coil and start checking for cracks/splits and resistance.
Bench sync on carbs won't do sweet f.a unless you have even compression and valve clearances.

I'd be really trying to find if it's lean/rich when the issue happens and then go from there.

[328FTW]

I've changed the leads and coil twice, no dice. Cold it's better but not great. My old engine used to really haul, I took it past 140clicks easy which for a little 250 wasn't bad at all. This one at WOT will max at 110kph with a tailwind, it's one sick little turd. Just with studying I don't have time for it's shit lately, so I've been riding the GN250. The new motor will be hopefully a lot better, it's just too cold at the shop to do anything. Fiddling with precise gaps and whatnot with fingers that have no feeling and a weird purple colour isn't productive.

Couldn't be bothered looking at it today, got a WOF on my BMW instead. This is a set of bushings, tyres, new motor and a bunch of other fairly spendy fixes later. All I managed to really achieve is destroying about half of the tread on the new tyres doing skids in the rain.

[Akzle]

hon DUH.
.

[328FTW]

hon DUH.
.

Actually I started pulling the bung motor out today but before I did as I pulled the carbs the slides didn't feel right 100% of the time, would stick for no reason sometimes. Long story short I spent some time wet n dry then polishing the slide bores and slides so they where sliding really effortlessly; was no fuel gum or anything so I've NFI why it was like that. It's running prety okish now cept for the cam timing which I still think is fubar, but it finally revs out without stopping at 9000 like it's a wall which means it can actually do highway speeds instead of dribbling along at 80 when it felt like it. I also put new carb socks on it and used coppercoat to make sure they sealed 100%. Like I said before I think it's a bunch of things but at least I'm getting somewhere now. Various other shit I did/checked over the course of about 8 hours.

Also if you can smoke my other honduh in a dragrace I'll give you 5 bux and a bag of chips ;)

<img src=http://i536.photobucket.com/albums/ff323/328FTW/Honda/2013-01-11110400_zps16481a71.jpg>

[gammaguy]

Ah yes,the old sivtec

Had one of those,went like a motorcycle,liked a drink and handled pretty well too,had all the fruit including the surround sound factory stereo with sub tween the back seats

Very nineties,but fun at the time

[Drew]

Easy five bucks, and bag of crisps.


Where you wanna come get smashed in a race?

[ducatilover]

I'll give you a drag on my GN bro. Or my Kawashitheap?


Cool mid engined poolude though, very different idea :devil2: I personally wouldn't run the intercooler there if you're using it on gravel.

[unstuck]

Fuck the car, is that a TEA ferguson tractor in the background:love::love::love: Or just the back wheel.:niceone:

[Drew]

Fuck the car, is that a TEA ferguson tractor in the background:love::love::love: Or just the back wheel.:niceone:
You can take the billie out of the hills,

[unstuck]

You can take the billie out of the hills,

Dont knock em dude, until you have wheelied one round the pub carpark.:headbang::headbang:



The TEA that is, Not a hillbilly. Thats just weird.

[Drew]

Dont knock em dude, until you have wheelied one round the pub carpark.:headbang::headbang:



The TEA that is, Not a hillbilly. Thats just weird.My tractor will wheelie nicely when it's finished.

[unstuck]

My tractor will wheelie nicely when it's finished.

Pics/vids or STFU.:devil2:

[Drew]

Pics/vids or STFU.:devil2:

Fucked if I can get the pics to load from my phone.

Took a ride on mower. Arseholed the blades and deck. Inserted a CBR 400.

[unstuck]

Fucked if I can get the pics to load from my phone.

Took a ride on mower. Arseholed the blades and deck. Inserted a CBR 400.

Good shit, what is it, Cub Cadet? That is gonna be a whole lotta fun.:devil2::headbang::headbang:

[Drew]

Good shit, what is it, Cub Cadet? That is gonna be a whole lotta fun.:devil2::headbang::headbang:Yip, Cub Cadet.

Was originally gonna mount the motor sideways and use the original transaxle, but it just wouldn't be strong enough, so it'll get sold with the standard motor.

[328FTW]

Easy five bucks, and bag of crisps.


Where you wanna come get smashed in a race?

Anywhere that requires minimal effort, preferably just the road out the back. All else fails I'll just run you over when we are done to play the sore loser card.


Fuck the car, is that a TEA ferguson tractor in the background:love::love::love: Or just the back wheel.:niceone:

<img src=http://i536.photobucket.com/albums/ff323/328FTW/Tractor.jpg>



Twas my grandfather's, he got too old and I fixed it. There is another one there I'm waiting to do the same thing to only all grey this time. The wheels are about the only thing I haven't replaced, they're full of bog.

[unstuck]

Very nice, I love those things.:love::love:

[328FTW]

Very nice, I love those things.:love::love:

Tractors are what I do in my free time. I was brought up on ferguson. I have a ferrari badge and Lamborghini one somewhere, just finished a david brown 885 that after new rings, bearings, pistons etc etc on the first start had been sitting so long the pump jammed open and it ran away on me; fastest intake removal you've ever seen to stop the damn thing. Stop cable just pulled off in my hand like it was in a bad dream.



I had a gutsfull of the broken motor and hauled it out today, new motor with a little oil down the bores had 200+psi of compression once I was done with the valves, headgaskets etc etc All I wanted to know was it was sealing, being cold and unbedded rings I just threw in oil to check my valves weren't the issue. Leakdown is better but I've NFI where it is. Haven't put the new motor in because honda in their wisdom changed the side the clutch operates on, the cable works on the side with the clutch, great. The hydraulic on the new motor has a hollow mainshaft with a long pushrod through the mainshaft to the clutch on the other side. Clutches totally different, spent 3 hours messing around with that before deciding I'd had enough wasting my whole weekend on it. But at least everything else looks great. Bedtime I think, this 2:30am working on broken bikes stuff is draining, will be dreaming of those new valves and whatnot trying to forget that I'm spending money on a pissbox 250

[unstuck]

:nya::nya: Fuck that would of been funny to see.:yes: If you are into tractors, check out the flicker link I put on the British leyland thread yesterday, some awesome stuff on there.:2thumbsup


As for the bike, good luck. You dont have to be mental to be a bike enthusiast, but it helps.:crazy::yes:

[328FTW]

Ok I have a huge new problem, the carbs don't fit. They changed the port offset for some godforsaken reason on this new motor and I can't see any real way around it. Not throwing away all this work. Would just throw my heads on it but the cam chain drive on the crank is different. I can't throw the new cams in the other heads either because the cams are a different radius and don't fit. They look exactly the goddamn same, exactly. It's just when you go to actually put them on it doesn't work. What are my options here? I mean I'm looking at something like this

- Buy a set of carbs that fit
- Fab the ones I've got to work somehow, new throttle linkage, retap and redo fuel fittings, cut and weld alloy airbox pan
- Apply my skillset and spare megasquirt ecu to just throw a damn throttle plate and injector on the damn thing. Keep the CDI, run fuel only mode and probably amaze a whole bunch of people who have no idea what the hell it is I'm doing.

Changing things to work might be ok, I have a TIG welder and it's the kinda thing I do but I hate wasting time. Converting to EFI is sorta out of the question as I'd need to buy a pump, fab a return if it's not returnless and setup an injector, intake and throttle THEN tune it. Really neat stuff but not the kinda bike I'd do it to and huge waste of time really. Buying a set is my ideal but that means finding someone breaking one, finding the right ones and even then maybe they're shagged and I start this whole saga again. BRB pushing my honda in the the waikato river.



Suzuki blew a bunch of rollers off the chain tonight as well then spat it out on the road. About froze to death in the shed putting the fucking thing back together with a chain I completely pulled out of nowhere that was spare for my honda that thankfully had a proper droplink unlike the piece of shit I had to cut off the bike. Was late by then so decided to change the oil as well since my freetime for the day was a write off anyway; happy days. My cars aren't doing much better as of late either and it's not even that old. So someone sell me the wide spaced VT250 carbs whatever the hell they are or came from, pretty please?

[Drew]

What year is the motor?

I'll hit up my wrecker mate and see if he has a set of carbs. Be easiest.

You'll still need to alter your airbox to suit the different offset.

[328FTW]

What year? Errr pass, I bought it as a motor. If I remember right it has MC08E stamped on it. 84-85?

Altering the airbox doesn't concern me much, I'm pretty open to doing that or just taking some alloy pipes to a washable filter you oil. What does annoy me is honda syndrome, they change stupid things like this regularly on almost all the ones I've worked on.

For reference I managed to find the perfect picture after lots of looking, the carbs look like this. Note the flat side to make them fit right, closer and slightly overlapping more I'd say.

<img src =http://auctions.c.yimg.jp/img337.auctions.yahoo.co.jp/users/4/3/2/8/tabakotakei-img600x450-1358767158cgdbxl15462.jpg>


This is what I have

<img src=http://i1124.photobucket.com/albums/l572/Captain115/Honda%20VT250F/IMG_0826.jpg>



Found someone who will sell me a set on tardme for a hundy. It's a hundy I'd of rather kept but if it gets me on the road again I really don't care. Reminds me once again never to assume anything is the same. I'll know by the end of today I think if I can get that other set, if not and your mate has some then whichever; just trying to sort it out quickly is all. Cheers for the offer :)

[328FTW]

Paying $100 for this set I found, that's with the airbox and socks etc Basically the entire intake system with lines, fittings etc.

Feel a little violated but all the same I hate hate hate missing out when it's the exact thing I need then I spend twice as much in petrol running around after the cheaper option.

[ducatilover]

:wacko: I fucking hate paying for things

[Drew]

Paying $100 for this set I found, that's with the airbox and socks etc Basically the entire intake system with lines, fittings etc.

Feel a little violated but all the same I hate hate hate missing out when it's the exact thing I need then I spend twice as much in petrol running around after the cheaper option.That's a good deal man.

I did ask my mate if he had some, but he wanted exact year and model. I forgot to come back and ask you sorry.

[unstuck]

:wacko: I fucking hate paying for things

Me too, but it got me in a lot of trouble when younger.:devil2:

[328FTW]

That's a good deal man.

I did ask my mate if he had some, but he wanted exact year and model. I forgot to come back and ask you sorry.

Picked them up today, right ones and everything so probably no longer required. For future reference the MC08E and MC15 use sorta the same carbs but they are different in their offsets and throttle cable positions, Kei Hin VD carbs but that flat side and airbox is different. I'm hoping the new airbox fits in my frame but if not I'll break out the tig and fab some new alloy box for the panel filter, or at least some nice pipes for an oiled cone filter or whatever.


As for paying for shit, tell me about it. Got stopped at a checkpoint today. Singled me out and wasted a shitload of my time before deciding he didn't like my learner plate and issuing a ticket basically stating it's insufficiently displayed so it's a failure to display ticket. I was about ready to jump up and down on the hood of his car. As if breaking the chain, throwing a leg out of bed on the honda at speed and being dicked around for like 20 minutes on the roadside while you halfass look up your computer isn't enough to put someone off you find everything is perfectly fine, in the right gear and being respectful then just decide to take it further with stupid bullshit reasoning. Will certainly help curb my behavior back to just taking off from those tax checkpoints. Knew I was in for it as soon as he pulled me out of the line and waved everyone else though, he was set on finding something and spent an age doing it. I've had enough of their stupid bullshit after owning the SS commodore for year, I got pulled over within 3 hours of owning the damn thing with them laying under it with torches trying to find god knows what. If they could find where all the fuel I put in it was going I'd of given them a medal.

[actungbaby]

I did, didn't seem to make much of a difference but then again I'm still unsure half the time if the cylinder is even getting fuel. It won't hold an idle so I have to crank it open a bit to keep it running so it's not pulling a full vacuum which makes that test of somewhat small worth. If I can get it to pull a good vacuum then it would be more helpful.

Basically it's running like a true sack of shit XD

Yes my cbr 900 rr didnt idle either without opening throlltle just die i done the same clean of

carbs and compressor gezz feeling like i put back on problem still be there.

I suggest fuel tap but if one carb working seems strange other whouldint being vacum

I got like 2 sets of vt 250 carbs and going be years before get around to geting crank fixed.

also rubber boots for crabs. when say goes flat at 6000 rpm is that on contant throttle

Or is on the main jets , whould float level be out or float valve not sealing . am no mechanic.

I just got step by step rule things out . head gasket on front cylinder ?

[328FTW]

It goes flat on constant throttle, if you let off it'll idle like a dream but crank it up and it'll die again. To me it seems like jets are playing up or the diaphram for the main needle isn't playing ball.
/

/My keyboard is also fucked and leaves a / when you press enter. Anyway over it, I won't have time to work on it till the weekend then maybe I'll get something done. If not it'll be next week before I can even think about the fucking thing. If I can get it running nicely enough and stop it being possessed I'm probably just selling it and moving on. I don't have time for games. It's done a bearing, thrown a rod and destroyed 2 sets of cams; shit one snapped in half for some reason I can't begin to fathom. This is motor number 3 and it's just being a prick. The new motor pulls hard when it runs right which is a good 5% of the time. I've set everything right, about the only thing I haven't tried setting is setting it on fire. I get everything running really nice then it either fails mechanically in a horrible way or the carbs go back to being fussy as hell.
/
/I talked to a bike mechanic I'm friendly with, basically told me pricks of things, never liked them and you're on your own. That about does it for me really, I have other more important things to be doing than stressing over this.

[Drew]

Latest issues sound like blocked pilot jets to me.

Possibly float levels, or blocked float needles.

You must be a legend at putting them in and taking them out by now, so get them out and give them another clean. Always blow carb cleaner or whatever you're using out with compressed air. Wear goggles 'cause the shit stings when it gets in your eye.

[actungbaby]

Balance your carbs, V twins are very picky about carb balance to the point that they will drop a cylinder. As this looks like the only carb issue that you haven't checked out or cleaned it is worth doing. also have you checked the compression on the cylinder that's not running, a low compression cylinder will not draw fuel out of the carb. balancing carbs on a v twin is easy to do as there is only one adjustment screw, either borrow a set of vacuum gages or book it in as should be a quick and cheep job for a shop to do.

yes 100 % i know its money we dont have but least you have more confidence if know

Carbs are balanced and compression checked othere wise it be naging doubt that lead to more frustraion. and that just make things worse.

Cam is on its way i go out to garage after dishs done and take few photos my vt 250

Project after done laughing u fell alot better , thats if can get past all the bikes and parts

[328FTW]

I've bench balanced then dynamic balanced the carbs. I have no idea why the carbs are being so much trouble. I'm so good at pulling these motors in and out now I can do it in about 30 minutes flat if that. I've flushed and blown the carbs out a few times now, I even had some leaks so cut my own gaskets carefully and got the floats to stop pissing out the overflow.

But I get on it and its flat, also oil leaks to africa cause the seals are hardened in the cam covers and oil filter spin on housing thing. The plugs are new and my next task will be to change the coils for newer ones, insulate and make sure the leads are working fine, blow all the oil and crap away from the sparkplug boot area after fixing the oil leaks and hopefully have the carbs soaking in some wicked evil cleaner while I do all this. The compression on the new motor is 230psi both banks, it starts easy. I dislike having a bike that is this much work though.

Also my gearshift is backwards on the new motor, up is down a gear, down is up a gear. I've completely no idea how that even happens.

[Drew]

The new motor is from a later model. They run a linkage from the gear lever to the selector shaft. I'm assuming your old one had the lever straight on the shaft. Simple.

[328FTW]

The new motor is from a later model. They run a linkage from the gear lever to the selector shaft. I'm assuming your old one had the lever straight on the shaft. Simple.

<img src=http://tws.dk-server.co.uk/item92684-2.jpg>



This seems like an overly elaborate way to make me fabricate something that shouldn't exist. Apparently the MC08 had these. I'll have to make a new linkage and pivot now to -_-

[actungbaby]

I'll give you a drag on my GN bro. Or my Kawashitheap?


Cool mid engined poolude though, very different idea :devil2: I personally wouldn't run the intercooler there if you're using it on gravel.

boys boys who gives a rats just enjoy what u have .. always going be something faster.
who cares blah blah

like in the add on tv... oh seen two gns parked togther at local pak n save choice

Young guy pained his up looked great black pipes .had good chat .

I got honda intergra engine tired whouldint pull skin of rice pudding

L love it though cause gets family from a & to b nephew got prelude.

Keeps saying need a vtech it blah blah hehe

[actungbaby]

I've bench balanced then dynamic balanced the carbs. I have no idea why the carbs are being so much trouble. I'm so good at pulling these motors in and out now I can do it in about 30 minutes flat if that. I've flushed and blown the carbs out a few times now, I even had some leaks so cut my own gaskets carefully and got the floats to stop pissing out the overflow.

But I get on it and its flat, also oil leaks to africa cause the seals are hardened in the cam covers and oil filter spin on housing thing. The plugs are new and my next task will be to change the coils for newer ones, insulate and make sure the leads are working fine, blow all the oil and crap away from the sparkplug boot area after fixing the oil leaks and hopefully have the carbs soaking in some wicked evil cleaner while I do all this. The compression on the new motor is 230psi both banks, it starts easy. I dislike having a bike that is this much work though.

Also my gearshift is backwards on the new motor, up is down a gear, down is up a gear. I've completely no idea how that even happens.

I have 4 covers seals use silcon rtv black once cleaned oil off let me know about the seals

sending you cam after 10am tommrow giving blood at donor place be going over year and half

count dracula strikes again maybe helped few bikers consider it its not biggie

They need plasma donors bad not everone can do it i can but am on happy pills so no go.

[Drew]

This seems like an overly elaborate way to make me fabricate something that shouldn't exist. Apparently the MC08 had these. I'll have to make a new linkage and pivot now to -_-Just ride it race pattern. You'll get used to it quicker than you'd think.

Some of my bikes are normal shift, some aren't. You'll stop thinking about it in no time.

[actungbaby]

Just ride it race pattern. You'll get used to it quicker than you'd think.

Some of my bikes are normal shift, some aren't. You'll stop thinking about it in no time.

Yes not biggie though did forget on old cg loaner once what racket went from 3rd to second .

yep linkage looks fimilar havent looked at in 2 years its in with old bits all over the garage.

[328FTW]

People actually run the shifter backwards?......

Learned something today at least lol. Maybe I should put the carbs on backwards, probably work better than it does now.

[Drew]

People actually run the shifter backwards?...... Yip, most racers do it for faster upshifting on the fly. Some people can't wrap there head around swapping back and fourth, so they just change all their bikes to one or the other.


Learned something today at least lol. Maybe I should put the carbs on backwards, probably work better than it does now.Hahahahahaha, have you got an airbox on the carbs? CV carbs will have a fit without one.

[328FTW]

Yip, most racers do it for faster upshifting on the fly. Some people can't wrap there head around swapping back and fourth, so they just change all their bikes to one or the other.

Hahahahahaha, have you got an airbox on the carbs? CV carbs will have a fit without one.

No box but I'm probably leaving it off until it stops playing up or I'm just removing every 5 seconds. One cylinder is dying at the slightest throttle, without the box it runs shit up top but at least you can twist it open and get a response, this is just dropping a cylinder completely every time. I'll have to figure out which cylinder this weekend and just work on that carb for a start.

I was going to try look at it tonight but the GN snapped a clutch cable then decided to have some kinda fit after I put gas in it. I think there is water or something in the fuel I bought. Was backfiring like crazy. The whole breaking everything at once thing is getting old.

[ducatilover]

You need box bro.

:cool:

[328FTW]

You need box bro.

:cool:

The box doesn't make a difference, cept to make me spend an extra 3 minutes swearing at it trying to remove it. The SLIGHTEST throttle touch is making one cylinder go haywire. It's nothing to do with the box, I had the box on and it's the same shit all over. I don't want the aggravation of that chunky POS being in my way everytime I try to do something.

[ducatilover]

Say box some more!!

My Spada was a cunt of a thing without a box on it, and even jetted to suit, it lost power. But that's okay because box is good and I loves box.
Box.

Not saying it's your issue. Just want to keep typing box. Because I'm a grown up

[328FTW]

Lol, this comes to mind


http://www.youtube.com/watch?v=R7ti1yX__mY

[unstuck]

I thought he meant one of these.:innocent:


285364

[ducatilover]

:lol: not quite what I had in mind, but both can be put on your face, which is a bonus

[smitty308]

[QUOTE=328FTW;1130570305]Bone dry. But every now and then it fires into life. I'm just looking for something I've missed. I've had these carbs apart a good 5 times and been quite careful in putting them back together. Fuel tap works, fuel lines and filter are new, everything seems clean but it delves into running like a sack of shit when it feels like it.

Bike is going to land up in the waikato river off the back of a ute at this rate /proble

[smitty308]

you tried running the bike with out the fuel filter they starved the carby on my bike

[328FTW]

you tried running the bike with out the fuel filter they starved the carby on my bike

Tis my next step. Although I never had an issue with it on the old setup. Then again with the crap gas I got the other day in the GN it could boil down to maybe I've been fighting something stupid like bad fuel which is making me look for something that's not there.

[328FTW]

Crack in the carb housing around the top diaphragm. Welded it up and went much better, still dropping out sometimes but nowhere near as bad or often. God this thing is broken

I'm of the opinion now that they're terrible bikes. I've no reason to want another an am on the lookout for a decent suzuki or something. Anything that isn't a fucking broken honda. Any serious offers over $800 I'd pretty much consider.

[ducatilover]

Don't link this thread to anybody you're selling it to lol

[328FTW]

To be fair there is good points, new rear tyre, new brakes, new fork seals, polished alloy covers and I bought a new chain. That's part of why I'm throwing a shitty, I've spent a lot of time not just on the motor but trying to make it a decent bike and it keeps shitting on my weekend time. Those brakes are shits of things, that alone puts me off if I have to deal with that over and over.

[328FTW]

Engine number 3 has thrown a rod out the front of the block.......again.

I'm not saying these engines are bad, I'm saying they're raging piles of shit. Shone a torch into the hole, rod still bolted to the crank but the piston has parted ways with the rod just under the gudgeon same place as the first one that did this to me. I've towed this POS more miles than I've ridden.

[unstuck]

Engine number 3 has thrown a rod out the front of the block.......again.

I'm not saying these engines are bad, I'm saying they're raging piles of shit. Shone a torch into the hole, rod still bolted to the crank but the piston has parted ways with the rod just under the gudgeon same place as the first one that did this to me. I've towed this POS more miles than I've ridden.

Maybe its the rider.:2thumbsup

[haydes55]

Engine number 3 has thrown a rod out the front of the block.......again.

I'm not saying these engines are bad, I'm saying they're raging piles of shit. Shone a torch into the hole, rod still bolted to the crank but the piston has parted ways with the rod just under the gudgeon same place as the first one that did this to me. I've towed this POS more miles than I've ridden.



Time for an upgrade.

[actungbaby]

Time for an upgrade.

Dude its not the engines fault there only pieces of metal the fault is idiots that trash the life out them never change the oil or run them low on oil . only 2 ltrs i think.

I brought one cost me 500.00 plus 200 for shipping plus 80.00 for spare engine that seller sold me with fecked crank .

the early motors did burn out cranks the bearings on the conrod either from cylinder

or the rear i forget both mine are the same . course it trow a rod in this case.

500.00 to get the crank cold weled and brought back to exellent condtion .

The vt got very short stroke high revs so piston accerration stress be very high

If you going rev them to redline when 20 plus years old with alot of play there going let go.

Its not if its just a matter of when

[328FTW]

I do realize they are revvy time bombs but this motor apart from the carbs I went through and rebuilt the bitch top to bottom. There were new valves, rings, checked clearances etc etc. I suck with carbs cause I have no experience; I'm an EFI man. My dad is going off about how it must be what I'm doing to the motors but the first one to blow was a standard motor I hadn't dicked with that just shit the bottom end going hard down a long straight.

I've wanted to upgrade but I wanted to have mine running right and sold first. I'm no pansy, I ride/drive the hell out of whatever it is I'm using. I'm a stickler for maintenance and pretty decent at building motors. This bike though, my god I'm unsure if I should just laugh or cry; it's terrible. I'm so lost on half the stuff that's happened like the camshaft that broke in half, how in the holy hell does that even happen.

[actungbaby]

I do realize they are revvy time bombs but this motor apart from the carbs I went through and rebuilt the bitch top to bottom. There were new valves, rings, checked clearances etc etc. I suck with carbs cause I have no experience; I'm an EFI man. My dad is going off about how it must be what I'm doing to the motors but the first one to blow was a standard motor I hadn't dicked with that just shit the bottom end going hard down a long straight.

I've wanted to upgrade but I wanted to have mine running right and sold first. I'm no pansy, I ride/drive the hell out of whatever it is I'm using. I'm a stickler for maintenance and pretty decent at building motors. This bike though, my god I'm unsure if I should just laugh or cry; it's terrible. I'm so lost on half the stuff that's happened like the camshaft that broke in half, how in the holy hell does that even happen.

Yes but its the bottom ends did you hold on to the conrods and see if there was side to side wear.

Both mine all had to do was take the sump of and put end of screw driver on the con rod bearing caps

That and brass in the oil , cam shatf snapping in half is intresting

[328FTW]

The first engine that threw a rod had 30,000 on it and was running perfect but the bike was crashed and written off. This one had everything in spec because I checked it with feeler gauges, plastiguage etc etc.

Just such a waste of time

[Drew]

Snapping a cam shaft, is often just oil starving. They seize one bearing surface and snap...(Not that they have bearings as such).

I dunno about the new motor. Terrible fuckin luck.

They're not the high revving as far as that goes, and the later ones as reliable as death and taxes as far as I've always thought.

[actungbaby]

The first engine that threw a rod had 30,000 on it and was running perfect but the bike was crashed and written off. This one had everything in spec because I checked it with feeler gauges, plastiguage etc etc.

Just such a waste of time

Gezz bloody bad luck feck am not sure i want even look at getting mine going sounds like hellish task

Mind you when you do you be expert in these machine s i have send you mine (yeah right he says )

[audifan]

I hate stories without an ending :cry: