My bike blew up!!!

[b1g-fuLLa]

Grrrrr had my Suzuki Rg150 for 2 weeks. Everything i read about them said that they hit a rev limiter as soon as the bike hit 13,000RPM to stop it blowing up. So i took it out, and took it hard. I redlined in 5th gear at "x" speed (ok ok i was being a bit of an idiot on the back roads) and changed up into 6th. Slowly the bike speed started to lift, then the motor cut out and started whining!!!!! I had a look at it........ the coolent pipe melted through so no water was getting to the radiator. The engine overheated, then seized! FUK!!!

This aint gonna be cheap to fix..............

I think ill buy a zxr250, at least i can trust them!!!

[Angusdog]

Would a rev limiter have helped you here? The coolant pipe is the source of your problems, not over revving which would have broken something within the motor (rod, piston or both). It's going to be cheaper to fix than a similar meltdown in a ZXR250.

[b1g-fuLLa]

Yea, i think my bike is absolutely screwd though, think i need a new engine and radiator, but then i dont know much about these things. But put it this way. I was going 160 then it just cut out, made a whining noise and rolled to a stop. I took the seat off to have a look. coolent everywhere exept in the coolent tank, holed coolent pipe. Kickstart is jammed, which is obviously because the motor is seized and won't turn over. I think thats quite hard and not cheap to fix on little 2 strokes like this, probably need a new motor at least, and Im sure that will be at least $1000................ :(

[Jantar]

No, its a two stroke so much cheeper and easier to fix than a four stroke. These things can happen, but does your bike have a temperature guage?

[caesius]

You might be lucky, sometimes you can let the bike cool down then turn the engine over after a seizure. Sometimes not though.

[Grub]

So i took it out, and took it hard!!!

So you set out to screw the bike .... and it screwed you.

Welcome to Kiwibiker ... we're not very PC here :)

[Angusdog]

A two stroke only needs three moving parts (although most have more). A four stroke would be toast, from cams, valves, pistons, camchain etc. So it's just as well you didn't blow up a ZXR. If the piston is seized, the bottom end (crank) may be okay, so you are probably up for a piston and new cylinder. And new coolant hose.

Bu these things happen. Two strokes will seize if they don't get enough oil, or cooling, or run too lean for too long, or you took their name in vain. I've killed an RD400 and PE400 in my youth from ignorance of what they required. And an XR600, for my sins.

[Coyote]

Yea, i think my bike is absolutely screwd though, think i need a new engine and radiator, but then i dont know much about these things. But put it this way. I was going 160 then it just cut out, made a whining noise and rolled to a stop. I took the seat off to have a look. coolent everywhere exept in the coolent tank, holed coolent pipe. Kickstart is jammed, which is obviously because the motor is seized and won't turn over. I think thats quite hard and not cheap to fix on little 2 strokes like this, probably need a new motor at least, and Im sure that will be at least $1000................ :(
I got a wrecked bike for $800 and took the engine from that. I originally got it off a mate with the intention of doing it up rather than taking the engine to keep my road bike going. You might not be so lucky finding an old bike, but give it a shot. Might find something at turners

Although hopefully it's just the top end (piston and barrel) that has seized. I've seen several barrels and pistons for sale on trademe in the past and you can get them from dealers (although they're expensive). Think the crank seized on my bike... ah well, flogging both off to a mate to pay for VFR brake disks, they're his problem now :p

[FruitLooPs]

No, its a two stroke so much cheeper and easier to fix than a four stroke. These things can happen, but does your bike have a temperature guage?

RG150's have a guage that for all intents and purposes is useless. When the bike is really warm it might move half a cm from the bottom peg, i've never seen the factory temp guage read halfway even, think the bike would be dead by then.

All the race bikes down south use a $30 remote sensor temperature guage from DSE. Slimline ones, not sure if you can still get them - go up to 70c.

I'm not that surprised the bike blew up, although a holed pipe is unfortunate. You should be able to trust an RG150, they're wrung out on a regular basis for extended periods without issue by the streetstock guys down here - including me.

When I first got my bike, it needed 2 new powervalves because they had seized and a new piston/rings since it was slightly damaged.

Had the whole thing split and checked by Oyster down here to make sure it didn't have a crankcase leak like I had suspected. I think you can get a rebuild if you know the right folk for under $1k. I did, ended up being more because of the bloody valves though. :angry2:

and there is *no* point in taking the bike to 13 grand. Redline is 12.5, and both of the RG's i've been on make a slightly offputting metallic whine at about 12 which is when I usually shift by.


My advice, pull the engine, or the head. It's easy as pie - took me and a friend an hour or so to pull the engine if that without a hoist or anything in my garage. Check the powervalve box, see if you can actuate the valves - if they're jammed and munted then thats $700 for a new set right there for new geunine suzuki parts.. :bash: might get lucky and find some on TM

I hope you didn't get your mechanic friend to remove the limiter as per your post: http://www.kiwibiker.co.nz/forums/showthread.php?t=55813

Sounds to me like you need a faster bike, and probably a racetrack to use it on.

[b1g-fuLLa]

Thanks for the replys guys. The thing is, this is my first road bike. Its also my first two stroke bikes, used to riding 4 stroke dirt bikes. Fact is, i don't realy know what a twostroke is meant to sound like, and the engine on thr RG is soo bloody quiet that when you're going over 120 you cant even hear it, just the wind rush. But you can feel when the bike needs a gear change, rather than hear it.

Caesius, i wasn't lucky this time, bikes cooled down and still seized tight.

Fruitloops, when I told my mate what I had bought he said Id better leave it as it is......... they blow up enough already!!! lol
And yes you're right, temperature gauge was barely up at all, only around 1/4 of the way up. Heres a copy and pasted description from the auction i bought it from.............

Suzuki RG150
New WOF this week, Rego has been on hold, will reactivate this week.
Need to check mileage reading and will adjust if necessary.
Average condition, scratches and cracks in fairings some repairs, Looks o.k. unless close up inspection. Unusual small dents one side of tank, not consistent with accident damage but who knows. This bike has obviously been dropped on both sides.
Just had new piston & rings, bore honed, Power valves checked & cleaned. Clutch plates cleaned & checked, new clutch cable. No receipts, no warranty, old parts available for inspection.
I have ridden this about 3 kms since engine rebuild and that was on a wet and windy day so parked it.
Can be viewed at Albany during business hours by prior arrangement.
No joy rides.
Cheap sale to move it on. No guarantees it just has to go along with heaps of other stuff.

Im not exactly that mechanicly minded when it comes to pulling stuff apart..............

With the work that was supposedly done on it you wouldnt expect it to crap out already would you??????? I honestly don't know how to look after a two stroke bike lol. The RG was meant to be my "cheap learning bike" before i upgraded to my dream...... the zxr250

[LilSel]

dude... that sucks!!! hope you get it sorted without too much hassle :scooter:

[quallman1234]

Ya muppet.

RG's go for ages if you know what too look out for.

You can probably sell it for a decent prize siezed on trademe.
I saw a sieze one go for like 600-800$ :jerry:

[b1g-fuLLa]

thing is i dont really want to sell it fucked after two weeks. Bought it for 1600, was offered 2500 for it on monday. Of course now the offer has expired lol. Ah bugger i hate myself :doh: why oh why did i have to take that thing soo bloody hard

[quallman1234]

thing is i dont really want to sell it fucked after two weeks. Bought it for 1600, was offered 2500 for it on monday. Of course now the offer has expired lol. Ah bugger i hate myself :doh: why oh why did i have to take that thing soo bloody hard

Was the radiator always like this? It sounds like you bought a messed up bike.

[b1g-fuLLa]

Na radiator seemed ok to start off with, it just got screwd because of the lack of coolent I think. When i got the bike firs thing I did was take the seat off and have a look. Replaced battery, spark plug. Battery acid overflow pipe is split. Left it alone as it doesn't really matter. Pipe from the coolent tank was snapped at the end near the tank. i just straightened the edge of the pipe up and put it back on the tank. Im pretty guttered about all this ae :weep:

[quallman1234]

Na radiator seemed ok to start off with, it just got screwd because of the lack of coolent I think. When i got the bike firs thing I did was take the seat off and have a look. Replaced battery, spark plug. Battery acid overflow pipe is split. Left it alone as it doesn't really matter. Pipe from the coolent tank was snapped at the end near the tank. i just straightened the edge of the pipe up and put it back on the tank. Im pretty guttered about all this ae :weep:
Sucks man :(, The RGs are good fun too!, Ill be buying me one at the end of the year (Currently racing one :)).

Hope it goes well

Welcome to kb:lol:

[b1g-fuLLa]

You race them Quallman?? How fast have you been on it without blowing it up?? lol. thanks for the welcome

[avgas]

You probably needed to take it easy for 1000k's so the engine had time to bed in.
The temp guages on the RG do work, but when it get over half way your fucked and should crawl it home.
Check ya bearings boss - hopefully they are still there lol

[b1g-fuLLa]

You probably needed to take it easy for 1000k's so the engine had time to bed in.
The temp guages on the RG do work, but when it get over half way your fucked and should crawl it home.
Check ya bearings boss - hopefully they are still there lol

ah shit of course (sigh) forgot about running it in. Thats pretty gay though, how the temp gage gets halfway and ur fucked, i mean how am I meant to know that?? Yea ummmm the bearings lol i probably left half of them behind going 160.............:Oops:

[Angusdog]

Yeah, it's like when no-one called me up to say you need to jet up a PE400 if it's only used full bore on the road :( I ended up giving the rest of the bike to a friend who had a PE400 (Not suggesting your bike is so terminal)

[FruitLooPs]

ah shit of course (sigh) forgot about running it in. Thats pretty gay though, how the temp gage gets halfway and ur fucked, i mean how am I meant to know that?? Yea ummmm the bearings lol i probably left half of them behind going 160.............:Oops:

Won't know bout bearings unless you take a look or just rebuild it and hope for the best - but thats a pretty bad way of going about it if it died at 160k.

Yeah you've gotta take it easy for at least 500km after a rebuild. I didn't really take mine into the powerband until 800+ after my rebuild and it's still going strong 5,000kms on.


Regarding racing, i've taken mine to a trackday and ridden a club one at a streetstock event.

Mine is geared slightly differently to the racebikes, and indicated about 165 ish down ruapuna back straight. The club bike i used was showing 175k down levels backstraight but it was more healthy than mine I think. Probably powervalves adjusted better + gearing.

[avgas]

ah shit of course (sigh) forgot about running it in. Thats pretty gay though, how the temp gage gets halfway and ur fucked, i mean how am I meant to know that?? Yea ummmm the bearings lol i probably left half of them behind going 160.............:Oops:
Yep i know the feeling - my rg motor became metal powder at 140+ when the oil pump failed.

[xwhatsit]

Have a go rebuilding it yourself. It's a two-stroke, it'll be about as hard to do a rebuild as it is to do your average 1000-piece jigsaw puzzle.

That's what I did when I toasted my first bike, my CB250RS. I didn't have a choice -- no money -- and I ended up with a great bike for a few notes, and learned heaps (from knowing nothing about engines to now at least knowing which way up a valve goes).

I'm sure somebody had a thread where they rebuilt an RG150 and posted photos for every step of the way.

[NotaGoth]

I'll give you $100.00

It can be a donor......:whistle:

[Angusdog]

Find a Haynes manual for it (Wellington library has a good selection of car & m/c manuals, so your local one may too). By working on smaller, cheaper bikes, you'll pick up the skills in much the same way everyone does. Having someone look over your shoulder helps, but not essential. A socket set and a few other basic tools and you're away.

I rebuilt my DR600 motor but ended up having to take it in to Wgtn M/Cs as it couldn't get into 4th gear. Turned out I had a selector fork in the gearbox backwards, but they were good about it, it was cheap and I learned another lesson - that's how people get good at looking after their bikes.

[NSR-Dan]

Have a go rebuilding it yourself. It's a two-stroke, it'll be about as hard to do a rebuild as it is to do your average 1000-piece jigsaw puzzle.

That's what I did when I toasted my first bike, my CB250RS. I didn't have a choice -- no money -- and I ended up with a great bike for a few notes, and learned heaps (from knowing nothing about engines to now at least knowing which way up a valve goes).

I'm sure somebody had a thread where they rebuilt an RG150 and posted photos for every step of the way.

Actually being a 2t its about as easy as making a 10 peice puzzle as you dont have to worry about valve lash, cam timing etc etc, just take of the barrel pull the piston pin you if you can and replace all the other parts.

also alot of 2t barrels are plated so it might be sweet and needs a hone. if it is plated dont get a rebore cause you need to replate it and this can be expensive.

[b1g-fuLLa]

I'll give you $100.00

It can be a donor......:whistle:

You've got to be kidding mate. Sure i'll take the hundy, but u wont get the bike lol

[carver]

Grrrrr had my Suzuki Rg150 for 2 weeks. Everything i read about them said that they hit a rev limiter as soon as the bike hit 13,000RPM to stop it blowing up. So i took it out, and took it hard. I redlined in 5th gear at 160kmh (ok ok i was being a bit of an idiot on the back roads) and changed up into 6th. Slowly the bike speed started to lift, then the motor cut out and started whining!!!!! I had a look at it........ the coolent pipe melted through so no water was getting to the radiator. The engine overheated, then seized! FUK!!!

This aint gonna be cheap to fix..............

I think ill buy a zxr250, at least i can trust them!!!

good on you..
no, kawasaki's are worse!
they got a plated bore aye...so, re-bore, piston, tigns, and re-plate and fingers crossed your done.

[jtzzr]

Sounds like a re-sleeve ,new rings and piston(maybe) . not too much in cost , love 2strokes, but take it as a warning ," DON`T DO IT AGAIN" , ride like the bike is a part of you , if the bike is hurting you are or else you will be shortly , hope it does`nt cost you too much

[b1g-fuLLa]

Ok heres a question............ whats a bike that is 250cc or less with alot of power to spare that i can thrash without having to worry too much about it blowing up 20ks from home?? Oh and be able to buy without burning a bottmless hole in my pocket.............

[NotaGoth]

You've got to be kidding mate. Sure i'll take the hundy, but u wont get the bike lol

Hehe.. I'm teasing btw. Have an RG, don't let it put you off. I love mine

[xwhatsit]

Ok heres a question............ whats a bike that is 250cc or less with alot of power to spare that i can thrash without having to worry too much about it blowing up 20ks from home?? Oh and be able to buy without burning a bottmless hole in my pocket.............

Hmmm... RG150?

No, seriously. Two-strokes are made to be thrashed. With a four-stroke you don't want to be red-lining it everywhere, that's not going to make your engine last very long. But a two-stroke... if you nana it everywhere it'll carbon up and run like shit. Part of the appeal of a two-stroke is their mental screaming thrashing-ness.

Don't taint all two-strokes just because you bought a shit one that ran out of coolant and seized. In fact, if you ran out of coolant on a four-stroke it'd probably seize as well.

You can't get much more bang-for-buck in the 250 world than a RG150. Fastest bike in street-stock, for a start.

[Grub]

Ok heres a question............ whats can I thrash without having to worry too much about it blowing up.........

A Toyota Corolla. You're heads in the wrong place for a bike. You've alredy killed a bike in just 20ks, next it'll be you

[HungusMaximist]

Na radiator seemed ok to start off with, it just got screwd because of the lack of coolent I think. When i got the bike firs thing I did was take the seat off and have a look. Replaced battery, spark plug. Battery acid overflow pipe is split. Left it alone as it doesn't really matter. Pipe from the coolent tank was snapped at the end near the tank. i just straightened the edge of the pipe up and put it back on the tank. Im pretty guttered about all this ae :weep:

Bro, you live and learn aye.

Every day is a learning experience for me and my bike.

So lax out and grab yourself a beer. Run ad on trade me if you have to, do the rounds on KB and ask a few chums here for advice or even better, if they can offer you some sort of help.

Things will start looking sunny in no time.

Cheers.

[skidMark]

A two stroke only needs three moving parts (although most have more). A four stroke would be toast, from cams, valves, pistons, camchain etc. So it's just as well you didn't blow up a ZXR. If the piston is seized, the bottom end (crank) may be okay, so you are probably up for a piston and new cylinder. And new coolant hose.

Bu these things happen. Two strokes will seize if they don't get enough oil, or cooling, or run too lean for too long, or you took their name in vain. I've killed an RD400 and PE400 in my youth from ignorance of what they required. And an XR600, for my sins.


yeah but 2 strokes are fuckit hand grenades...

and replacement negines for zxr's are only 400-500 bucks...

and are alot harder to blow up than 2 strokes....

[barty5]

Ok heres a question............ whats a bike that is 250cc or less with alot of power to spare that i can thrash without having to worry too much about it blowing up 20ks from home?? Oh and be able to buy without burning a bottmless hole in my pocket.............

save yah money rebuild what you have make sure it dont leak coolant any more and thrash it if thats what you want it for your going to have to rebuild it any way as it will be worthless as it is live and learn yah gota maintain what you ride this you should be awre of after owing off road bikes.
Its a 2 stroke nothing to it to strip and rebuild top end.

[ajturbo]

PM "Oyster".. he'll sort you out