For several reasons I'm having to convert to bike carbs on my pinto powered seven, one of which is so the weber 34 ich doesn't stick through the bonnet, and I know there are several threads about using bike carbs. Most people on here from what I gather use a Kawasaki carb but a few have used Honda's, now my question is, which is better? Has anyone really run both on the same machine? has anyone run them side by side on similar? Which is more reliable? which is lighter? Which is the better carb? If I had to narrow the criteria, I would say carbs off a 600 cc bike simply as they seem to be cheaper.

Most if not all bike carbs work on the same principle and I have not heard of any better or worse than the other
A general rule of thumb is to roughly match the port size of your head.
Bike carbs have a slide that creates a variable venturi and as such you are unlikelly to go to big
Weber carbs tend to run choke sizes of 32 to 34mm for a 1600 and 34 to 38mm for a tuned 2.0L similar rear port size on a bike carb would seem prudent

I've only used ZX6R carbs so can't compare, but they were very easy to get the car running well, with just a change of jet size and fiddling about with the adjustable needles.

Stu

I got ZX9R ones simply because they were cheaper than R1 carbs at that time (R1 carb' had the name for car engine conversions, but ZX9R ones didn't at that time)
the ZX9R carbs are keihin's and the R1's are mikuni's - but the design is very similar and choke size is almost exactly the same (39 or 40mm depending on the model / year)

its a similar story with the ZX6 and R6 carb's just a size smaller
some other 600 to ~1000cc bike carb's are also suitable so keep an eye open for a bargan

[Edited on 30/11/2012 by mcerd1]

Zx6 carbs are 38mm mikunis.

I think R1 and ZX9s are 40mm

Stu