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Dear Gents, I have a K&N airfilter I want to fit, does anyone know what jets I have to replace? I am sure someone knows, thanks in advance, keep up the good work.

Duncati.

A day when you have not ridden, is a day you have not lived.

Hi
What cans are you riding with?
I ride with open, golf ball roll thru types and K&N filter, and I can recommend the below. This is what I have fitted, and it is ok. I would like to fit a fuel regulator. This should also help. *=changed

Choke:36
Ventury: 350
*Main jet: 160 *
Air corrector jet: 170
*Ideling jet: 60 * (65 is to rich)
Air ideling jet: 130
Pump jet: 35
Starting jet: F7/110
Needle valve: 300

Kind regards Klaus

Duncan, I've fitted a k&n and didn't changed the setting. Mine allmost runs perfect..!

Hi Leon, kuip stuur ik zaterdag met post, I have tried the filter without rejetting but I get a lot of backfire out of the right hand exhaust , can not seem to get mixture right even with a vaucum gauge? , runs ok without filter.

Duncan.

nilaus wrote: I would like to fit a fuel regulator. This should also help. *=changed


Kind regards Klaus

Klaus,

Is this what you want?? http://www.jegs.com/p/Mr.+Gasket/747753/10002/-1



or this: http://www.jegs.com/p/Holley/745059/10002/-1



You can but it and send it to me and I can then resend it you.

If you fit it under the stock airbox lid you should not have to change anythiing. If you have modified your airbox lid maybe a step up on the idle jet

Duncati wrote:Hi Leon, kuip stuur ik zaterdag met post...

Stuur nog ff je rekeningnummer, zodat ik portokosten kan overmaken..

Brutus wrote:Duncan, I've fitted a k&n and didn't changed the setting led lights. Mine allmost runs perfect..!

In terms of this, I must go with your opinion, because all the others does not seems to match.

If the backfiring is on the over-run at lower speeds,and you have no airbox,(just the oval type filter on top of the carby),it is probably one size too large on idles,but this opens a whole new can of worms as you may have to go up a couple of sizes in mains to compensate,or risk creating a lean hole further up the rev range.I know this information is contrary to the traditional,more air flow,must be lean,richen her up approach,but it is based on my experiences with the a similar setup contis/oval k&n/weber.Every time my p750 got backfiring on the overrun,I was rich on idles ! J.