Anybody try a HD/Keihin CV carb?

You've got to be prepared for a lot of experimentation with this ! As you need to get the air filter & airbox sorted out too not to mention the jetting > A CV carbie has to have whats going on in the engine to match up with the vacuum at the back other wise the slider doesn't go up & down when its supposed to !I'd toss it & get the standard or a Mikuni flat or round 36-38mm but this is only my opinion (I've wasted lots of hours mucking around with CV carbs on lots of different bikes some work some end up in the parts bin) cheers Dave.

Hi 57,
i have one on mine, i used an adaptor for a older hd flanged manifold (shovel) to accept a cv.
i needed to fab an a/c adaptor and cables.
the bike will start w/2kicks and runs fairly good but i'm not 100% happy w/it.
when the weather improves i'll be fiddling w/ it again, some of the problem is could be that the adaptor is about .20" larger then the port in the head and i need to blend this in instead of having a sharp edge. but all in all it is probably to big a carb for this engine w/ the minor preformance work mine has.
hope this is helpful, Bob

yamatopdog, just for grins, what jets did you use? Thanks!

I was planning to do the same [ and have 2 in bits] I think the hardest part will just be the pilot jet/needle jet [not needle] and the spring tension, [may be able to snip some coils off?] as harleys produce a lot of intake vacuum at low revs and the carb will be rich on the bottom circuits, best of luck, it will be some 8months or so before I do something with mine but I will post the results for free, [and they will be Dyno proven] well done for thinking outside the square as they say. Carl. [PS, I also have 2 early DR600 flatslide pumpers,38mm that I will try as well.]

Instead of a Keihin I used a Mikuni HS40, also available at Harley shops. It bolts right on and works without any problems. The bike starts easier now and emissions are lower. Don't know about the mileage yet.