nklr carb jetting

[Garys Mail]

The other problem is I don't understand the way the choke operates. Does it lower the jet? Does it open the butterfly further? If it only lowers the jet, then I know I just need to richen the mixture somehow. The choke is really an enrichener. It allows extra fuel to flow. The surging is probably a lean surge created by the new filter being less restrictive than the old one. I would try moving the clip down one notch on the needle. That should do the trick. Gary B.

[geoffluttrell@yahoo.com]

Hello Gary, Thanks for the tip. I'll give it a try. How does the choke enrichen the mixture? The actual mechanical happenings, I mean. I guess I can look at a diagram. What an idea! Take care, Geoff

--- In DSN_klr650@y..., "Garys Mail" wrote: > The other problem > is I don't understand the way the choke operates. Does it lower the > jet? Does it open the butterfly further? If it only lowers the jet, > then I know I just need to richen the mixture somehow. > > The choke is really an enrichener. It allows extra fuel to flow. > > The surging is probably a lean surge created by the new filter being less > restrictive than the old one. I would try moving the clip down one notch on > the needle. That should do the trick. > > Gary B.

[Ted Palmer]

BKGADGET@... wrote:

> Wish I had you around years ago when I was racing a Mini Cooper S to help > tune the carbs.

Carbys are the easy part, you can do a crude dyno job in the backyard running the engine against the brakes with a Colortune sparkplug in the motor. A good supply of needles and charts is needed, of course. However, getting the timing advance curve right needs a real dyno. I've spent some time in the international Mini mailing list but the volume got too much for me, about 150 posts per day was not unusual. Datsun Z list volume is much more managable. Mister_T