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  #1  
Old 19-06-2017
JET-33 JET-33 is offline
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good carby/4t tuner in vic

recently got an 05 wr250f and thinking about getting the carby cleaned/tuned, possibly put in a JD kit

whos good in vic metro area? the usual bike shops ok or is it better to use more tuner/performance type worshops rather than your general service workshops?

cheers
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Old 19-06-2017
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Pygmygod Pygmygod is offline
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Do you have the standard exhaust?
Standard airbox?
Has it been re-jetted by the previous owner?
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Old 19-06-2017
JET-33 JET-33 is offline
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Quote:
Originally Posted by Pygmygod View Post
Do you have the standard exhaust?

Standard airbox?

Has it been re-jetted by the previous owner?


All standard I believe.

Wanted to take it for a ride before doing anything. Contemplating taking out baffle and grey wire mod. Asked the shop who checked the valve clearance about the throttle stop mod and they said there was no throttle restriction.

Had a few slow down hill stalls on the weekend but might have just been idle to low. Need to fix the idle screw. It was working but doesn't seem to be adjusting now. Not sure what changed.



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Old 19-06-2017
JET-33 JET-33 is offline
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Quote:
Originally Posted by Pygmygod View Post
Do you have the standard exhaust?
Standard airbox?
Has it been re-jetted by the previous owner?
i see from your sig you have the same bike.

any advice? have you changed anything from stock?

being from sunbury you prob ride in similar conditions to be across dissa, kinglake etc
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Old 19-06-2017
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If it's all stock then I'd be getting onto the Yamaha page and download the manual.
It should be free, if you can't find it let me know.

Try your hand at just cleaning out the carb and getting the idle speed set then you shouldn't have to touch it.
When you're cleaning the carb you note down the sizes cause the previous owner may have already fiddled with them before.

No point buying a kit if you end up buying the same thing or close enough to the same thing.
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Old 19-06-2017
JET-33 JET-33 is offline
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Quote:
Originally Posted by Pygmygod View Post
Try your hand at just cleaning out the carb and getting the idle speed set then you shouldn't have to touch it.
not that keen on taking the carb out of the bike myself
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Old 20-06-2017
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Where do you live?

I'm a bit of a computer geek with no mechanical/trade experience and I was able to learn from the manual and do it myself...it took a while but if you're a determined tight arse then you'll give it a crack
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Old 20-06-2017
JET-33 JET-33 is offline
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Eltham north. Determined yes, free time zero. 3yo and 8 month old at home. I can strip and rebuild a 2 stroke go kart carby in 15min no dramas but a dirt bike 4 stroke just screams time


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Old 20-06-2017
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The carbies are pretty much the same I believe.
The only hard part is doing stuff like valve clearances and timing etc.
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Old 20-06-2017
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Quote:
Originally Posted by JET-33 View Post
Asked the shop who checked the valve clearance about the throttle stop mod and they said there was no throttle restriction.
You won't find a shop mechanic that can properly tune a FCR. The mod you speak of is the 'PK' mod and it controls the AC pump stroke depth, not the throttle valve. The PK mod is only done on slant FCRs, your FCR-MX doesn't have the casting to take the PK mod.

There's about $250 worth of labour in tuning a FCR, it'll need a 'Merge' spring, the 'O'ring mod, the AC pump feed orifice drilled out, a Boyesen Quickshot ( or preferably a rare-as R&D PowerPump, the PowerBowl doesn't work), 2007 YZF250 jetting spec. the TPS re-set to 0.75V, the MAJ set to 1.1x the YZF MJ and lastly, the PAJ set to 2x the PJ.

There's probably under a dozen blokes in the country that truly know FCRs and most of them are retired grumpy old farts now that CBF'd.
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