Ruko Posted April 17, 2005 Report Share Posted April 17, 2005 (edited) What is the differences between Mikuni and Kiehin carbs? I am looking at PJ 34mm and I think the Mikuni's are TM 34mm. I used to run the Kiehin's and they worked just fine but I got a Cheetah set up which came with Mikuni's. The Mikuni's don't fit with my pipes but the Kiehins do. I don't know what the difference is between them though. Edited April 17, 2005 by Ruko Quote Link to comment Share on other sites More sharing options...
MotulMonsta Posted April 19, 2005 Report Share Posted April 19, 2005 Chevy or Ford? That's the diffrence Quote Link to comment Share on other sites More sharing options...
Ducman Posted April 19, 2005 Report Share Posted April 19, 2005 If the Mikuni's dont fit, the keihins do, and you have more experience jetting them, I'd probably just stick with them. I would guess performance would be fairly similar, although I do believe most builders go with the Keihin. Maybe they are more fine tuneable or something. I don't have any experience with Keihin, which most poeple on the HQ with aftermarket carbs have, but I do run the TM34's. About the only difference I can tell you is that instead of changing the needle to go a whole range leaner or richer as on the Keihin's the Mikunis change the dump tube. Once you get the correct dump tube (aggressively ported banshee's typically like a Q-0, 34mm TM's come new with a P-8 which is too rich) the needle that comes with the carbs works pretty well. I've heard of people on the HQ with Keinins chasing around different needles richer, leaner, not to mention the lengths, tapers, for richer/leaner tip in or richer/leaner at 2/3 throttle. I cant say for sure, but it seams like Mikunis might be a little easier to tune in the needle department and they use the same style main jets as the stock carbs, pilots are different style than stock but the size (i.e. #30) is similar to stock carbs. The dumb tubs are $15 ea. though. Quote Link to comment Share on other sites More sharing options...
CowboyBanshee Posted April 19, 2005 Report Share Posted April 19, 2005 Most sleds have mik's...and from what I understand, a flatslide mikuni has better throttle response than a typical roundslide carb.. Quote Link to comment Share on other sites More sharing options...
05bansh Posted April 19, 2005 Report Share Posted April 19, 2005 I say screw them both!! Go with a real carb- Lectron!! Quote Link to comment Share on other sites More sharing options...
fixitrod Posted April 19, 2005 Report Share Posted April 19, 2005 Keihin are easier to take apart and jet. The tops screw off easy, the needles come out with a 6mm socket and some with use both the 6mm and a flat head screw driver. The 6mm is the same size as the main. For jetting purposes I believe the keihin's are easier. I think most mikuni's are are screw tops and takes two mini screws to take the needles out. Quote Link to comment Share on other sites More sharing options...
racer Posted April 19, 2005 Report Share Posted April 19, 2005 (edited) I think most mikuni's are are screw tops and takes two mini screws to take the needles out. 357358[/snapback] the round slides are screw top, i believe the flatslides are not. and yes its two micro fine super easy to strip, screws to remove the jet. Checked the sudco diagram, The flatslides have a rectangular top, its held on by two philips head fasteners. Edited April 19, 2005 by gimmeabeer Quote Link to comment Share on other sites More sharing options...
87sheerips Posted April 19, 2005 Report Share Posted April 19, 2005 Keihin are easier to take apart and jet. The tops screw off easy, the needles come out with a 6mm socket and some with use both the 6mm and a flat head screw driver. The 6mm is the same size as the main. For jetting purposes I believe the keihin's are easier. I think most mikuni's are are screw tops and takes two mini screws to take the needles out. 357358[/snapback] I agree, I have 34 PWK's and jetting is a breeze compared to the mikunis i had on my previous bike. Quote Link to comment Share on other sites More sharing options...
05bansh Posted April 19, 2005 Report Share Posted April 19, 2005 Get the Lectron and you wont have to worry about all of that changing jetting crap. You can adjust your jetting with the turn of a screw! A little on the pricey side though, but worth the $ imo. Quote Link to comment Share on other sites More sharing options...
Ducman Posted April 19, 2005 Report Share Posted April 19, 2005 The TM34's have 2 screws to remove the carb top and 2 small screws in the slide to remove the needle but they seem just as easy as the stock slides to me. Putting the springs and cable back on was a major biotch the fisrt couple times though, much harder than stock carbs, untill I figured out a couple tricks to help get them back on, now its easy. The Keihin may be easier to make jetting changes, but I thought the TM34 Mikuni was pretty easy to get the jetting dialed in as how the motor ran and responded to changes as far as being able to tell when it was too rich and when it was right on. Quote Link to comment Share on other sites More sharing options...
rocketboy Posted April 20, 2005 Report Share Posted April 20, 2005 in my experiance kehins are leaps and bounds ahead of mikunis . mikunis are easier to jet ,but much worse at all the nonsense that is required to jet the damn things, like the screws and bowls and slides and seats that wear out prematurley IMO . once you get your keihin dialed in (pain in the ass)it will do everything a mikuni does and then some ...as far as response and velocity goes anyways. i traded my mikunis in for keihins and couldnt be happier Quote Link to comment Share on other sites More sharing options...
05bansh Posted April 20, 2005 Report Share Posted April 20, 2005 http://www.packardracing.com/start.php?pag...46398784ec91737 Quote Link to comment Share on other sites More sharing options...
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