jetting up...

[riichy]

ok i put a art race can on my zxr400 about 2 month ago, it makes the bike run better but makes it have a big flat spot from 3000rpm to 6000rpm.....

now my bike is 33bhp so could i take it to one of these dyno thingys to have the mix changed or wont it work on a 33bhp bike .........

plus if i do could someone tell me the cost of having it done...


thanks good karma to good helpers........... :karma:
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.......... PLOD ............ zx636 2004

[Barry_M2]

No point re-jetting until you have the restrictors removed, as with them in place, you are hardly getting any air through in the first place, so at the moment, your probably running very rich (unless carbs are re-jetted to suit restrictors??).

Get the restrictors out, then get it on a dyno. Most charge by the hour, then + parts used etc...

[johnsilva]

Gaeme France is THE MAN for 400's in the Uk. he can do magic to 400's.

graemefrance.com


also check out

https://www.400greybike.co.uk/Forum/default.asp?CAT_ID=6

they should be able to help you out

John
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Current Bikes: ZX7R P5; KR1S C2; GPX250R F3
Previously: CBR400RR-R; YQ50 Aerox

[Kickstart]

Hi

You can play with the jetting, but be prepared to have the mickey taken by the dyno operators.

The way the restrictors work on a CV carbed bike they should not really affect the mixture. However you might well have leaned the mixture off with the race can. Possibly try lifting the carb needles a touch and see it that improves things (doubt they are adjustable, so use a thin washer under each needle to shim them up a touch). If it improves then you know you are on the right track, if it gets worse then you know it is running rich.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[numark1]

Take the restrictors out you big girls blouse. Hairdriers have more acceleration than 33bhp bikes.

[johnsilva]

[Jrod]

I can see it now!

'New hairdryer p550 from wella, 0-60 in 4 seconds!'

[riichy]

thanks laids,,,


i think am going to get restrictors out ofter winter and see what its like...

only reson i have them in is becouse my dads a copper and says am fucked if i ever have a crash with them out...
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.......... PLOD ............ zx636 2004

[numark1]

[riichy]

thanks T44TE M




ummm i suppose he dont have to know
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.......... PLOD ............ zx636 2004