Where can I find?

[jomi32]

I´ve been trying to find somewhere in Finland, Germany and UK slow jets # 40. I have those normal 35 but it´s running too poor with them. So where to find these?

Or another possiblity; I can find here in Finland those Keihin jets # 40 which are 5 mm longer than normals 35 # which was inside in my carbs. Does anybody know if these are ok?
http://www.storm-motor.fi/haku/?q=Keihi ... ubmit=Haku

[oldschoolcarbs]

Yes you can use the longer ones but you'll want to shorten them. Very easy to do. Be very careful to clear any debris out of them or you'll be in worse trouble than before. You can also safely enlarge your existing jets but you'll still have to pull them out to accomplish this and you'll need access to some *extremely* precise drill bits.

Keep in mind that a very small increase in the size of the slow air jet will make a proportionally larger difference to your overall fueling profile than merely going up a size on the main jet(s).

We'll also want to make absolutely certain that the cause of your problem isn't the result of a clogged orifice. What, precisely, is it NOT doing correctly? That'll give me more to go on as far as pinpointing a solution.

Jack

Feel free to email me at oldschoolcarbs@yahoo.com if you'd like more detailed info.

[Mike Nixon]

There is something else wrong with the engine if the standard idle jets are clean and there is still a problem with the idle. No multicylinder engine running stock carbs ever needs its idle jet size increased unless a big change in fuel type is part of the picture, say from gasoline to alcohol.

[jomi32]

Yes, I know and agree all this, but nowadays we have in Finland this alcoholbensin and also this GREEN party.

Also I know that you are the GURU CBX carburators.

I´ve been playing about 20 years carburators in karting. We have used Ibea, Walbro, Baroni etc. and last years Dellortos. That´s why I think it is running week when it is running > 3.000 rpm.