VFR owners' thread, for VFRPS members and prospective members

[PirateJafa]

First thing I would check is what Mr HDC said - check that your breather hose from your fuel tank isn't sandwiched under the tank (though if the rear-ending was that bad, it sounds like it might have been shaken free by now).

If that breather hose is shut off, then the bike will run for a while, until too much of a vacuum builds up in the tank and then it won't want to pull more fuel down the line, and will slowly die as the carbs drain - same as running out of gas.

Was a interesting problem to solve, as each time it happened, I'd assume I'd run out of gas, so would open the fuel cap to check... "nope, there's fuel in there, wtf?"... which would of course equalise the pressure again and let fuel flow... for a while...

[Harvd]

Hey guys, im thinking of cleaning my carbs tomorrow, the fella I brought it off says he had recently done it, but it feels like it has a flat spot as though a jet is blocked, plus it gives me an excuse to finally pull my new beast apart haha, I also need to top up my radiator reserve and rear break fluid, as well as do my chain, so its like a super maintenance day tomorrow, I have cleaned the carbs on my two fiddy with some help, but I believe I can do that again without any hassle, was just wondering if there is anything I should look out for under the tank of the VFR like some nasty prick of a bolt or something like that, and if there is anything I should check out while I have it apart, I know these bikes can have an electrical fault at some point and time, but is there anything else I need to keep my eye on while I have my shit apart?
Cheers.


Also, Does anyone have a workbook manual for the NC30 for sale.. like cheaaappp? haha

Every bolt on these under the tank is a prick. The first time will be a learning experience and test of your patience. A blocked jet shouldnt cause a midrange flatspot however It would manifest itself as a weak top end. these bikes tend to have a mid range flatspot stock but can be cleared up with a bit of tweaking.

https://www.davidsilverspares.co.uk/...SE/part_30957/
That should be about as cheap as ive seen them new even including shipping. Theres a guy on TM sellin them too but for maybe $10 more max.

[Icemaestro]

Hi all, considering/on the look out for a NC30 or if I'm lucky enough, a NC35 rvf...been scanning trademe (just missed out one one for an amazingly good price last thurs), but anyone on here looking to sell theirs right now?

Cheers

[DrunkenMistake]

Yah I had herd things like that, and had read some bits and pieces about people suggesting bigger jets and some fine tuning and exhaust change to provide a better mid range, not overly worried about it if its a standard thing, Will be changing my Can at some point soon, looking at getting a one off made when I get around to deciding how im going to do it design wise. Cheers for your help

[gatch]

Yah I had herd things like that, and had read some bits and pieces about people suggesting bigger jets and some fine tuning and exhaust change to provide a better mid range, not overly worried about it if its a standard thing, Will be changing my Can at some point soon, looking at getting a one off made when I get around to deciding how im going to do it design wise. Cheers for your help

VFRs commonly have a flat spot around 6-8000rpm. This can be improved. Look up "400greybikeforums". It's a website based in UK. These guys absolutely beat off over their 400s. There is a good "how to" for carb work in one of the mechanical forums.

[Devy]

First thing I would check is what Mr HDC said - check that your breather hose from your fuel tank isn't sandwiched under the tank (though if the rear-ending was that bad, it sounds like it might have been shaken free by now).

If that breather hose is shut off, then the bike will run for a while, until too much of a vacuum builds up in the tank and then it won't want to pull more fuel down the line, and will slowly die as the carbs drain - same as running out of gas.

Was a interesting problem to solve, as each time it happened, I'd assume I'd run out of gas, so would open the fuel cap to check... "nope, there's fuel in there, wtf?"... which would of course equalise the pressure again and let fuel flow... for a while...

mate,thats sounds exactly like what happen.. but it ran perfectly fine last nite.. maybe while i was fiddling around with the fairings yesterday i might have moved it into a bad position.. hmmm my luck ai..

its allgood gives me an excuse too properly comb over the bike.. should be a sick vfr by the end of this.

[jono035]

Good on you for servicing it yourself, but be real wary the first time you take stuff apart. I've fallen into a few traps with mine, so far.

When I first took the tank off mine, I accidentally snagged and tore open the vacc hose that operates the petcock, so everything seemed fine yet no fuel. Also, getting the carbs on and off is a job requiring some finesse, and a 400mm long phillips screwdriver... There was a good description of how to do it on the 400GreyBike forums, which are a gold mine of info about these bikes. I'd recite it here, but I can't remember it, I'm afraid. Also, I've been warned not to actually dismantle the bank of carbs, just take off the float bowl, as getting those linkages back together correctly can be difficult and will cause all sorts of weird flat spots and roughness...

[koba]

its allgood gives me an excuse too properly comb over the bike.. should be a sick vfr by the end of this.

Maybe it will be.

[HenryDorsetCase]

Good on you for servicing it yourself, but be real wary the first time you take stuff apart. I've fallen into a few traps with mine, so far.

When I first took the tank off mine, I accidentally snagged and tore open the vacc hose that operates the petcock, so everything seemed fine yet no fuel. Also, getting the carbs on and off is a job requiring some finesse, and a 400mm long phillips screwdriver... There was a good description of how to do it on the 400GreyBike forums, which are a gold mine of info about these bikes. I'd recite it here, but I can't remember it, I'm afraid. Also, I've been warned not to actually dismantle the bank of carbs, just take off the float bowl, as getting those linkages back together correctly can be difficult and will cause all sorts of weird flat spots and roughness...

understatement of the year. Its an ARSE of a job. Also if you have to ever take off the rear headers then get the thing back on, especially with the engine in situ. I ended up taking the shock out of mine to do it.

[DrunkenMistake]

Will never be doing that again!.. found my problem, there was a half cooked moth stuck in one of the sliders, it seems to be running better after all that, took me FOREVER to get the stacks back on, Its as though the plate ontop of the carbs with the stacks on it is slightly twisted, Next question,
Does anybody have a new clutch cable for sale or know of anyone with new ones in stock? went to the bike shops here and was told I would be better off sourcing it from over seas myself, would be easier and cheaper. Or does anyone know of another suitable cable that would be an ideal replacement.

[DrunkenMistake]

Uhh, Found that Tyga has a clutch cable to suit for $5 USD

[gatch]

Uhh, Found that Tyga has a clutch cable to suit for $5 USD

That surprises me not one bit..

[sil3nt]

Uhh, Found that Tyga has a clutch cable to suit for $5 USD

Check the shipping though! If you do order something from tyga let me know. I wouldn't mind the clutch cable as well would make shipping cheaper.

[HenryDorsetCase]

Uhh, Found that Tyga has a clutch cable to suit for $5 USD

check out David Silver Spares out of the UK. My last order from Tyga never fucking arrived, so they're dead to me.

[DrunkenMistake]

check out David Silver Spares out of the UK. My last order from Tyga never fucking arrived, so they're dead to me.

Fuck I hope it arrives.
Ordered last night so we will see, shipping wasn't all to bad I also picked up a few other little bits and pieces sorry sil3nt I pretty much done it when I had posted that haha

---------
Kay So this morning I went and warmed up the bike as usual, turned off the choke etc and BAM it just died, spent a good 10 mins trying to get it going and just gave up, Tigertim20 came around at about 4:30ish to give me a hand and we stripped it back to where I had got yesterday, he checked the carbs etc for me and he mentioned something I should ask you guys as I would never have checked, He said this about the Jets, secondaries were 35s mains were a split between 115s and 118s, was wondering if this is normal?.
Anyways we got everything back together etc and couldnt seem to figure out what had gone wrong, when we got to the tank it hit us, The Vaccume hose under the tank was Shagged and was falling apart, so it had split in the process of me pulling it all apart yesterday unfortanitly due to me and TT been banter buddies, we had chewed up about 2 hours before we had realised this, so looks like ill be taking the 2fiddy to work tomorrow and to super cheap to buy some more hose haha.