Kawi2strokes.com Forum

The threads are compatible. I've done it before.

Ok guys I appreciate your help and input. You gave me a lot to think about. I have one more question regarding this swap. Has anyone fitted H2 carbs onto an H1 with chambers? What I want to know is if it's worth the effort? What I really mean is will I see a noticable speed increase by doing this? I have a 75 H1F with 73 cylinders, Damon crank, first over Wossner pistons, mirror polished head domes as well as dremmel smooth exhaust ports along with Jemco chambers. To be honest the bike doesn't impress me. I'd like to be shoved back on the seat when accelerating like my 72H1B did for me. I had heard that the 500's were under carb'd. Can anyone tell me that the bike will get up and go after these H2 carbs are installed?
Thank you.

Don't forget both your bike and possibly you weighs more than when you remember how the H1B performed.

There is allot of optimizing to do to the bike if it presently won't go as fast as a stock H1B. The power increase upon installing the 30mm H2 carbs instead of the stock 28s will be minimal in any event.

I suggest you investigate your ignition timing (3.45mm BTDC is a known sweet spot for the 500, regardless of Kaw's later model spec), cranking pressure, air filter setup, jetting etc. before proceeding with bigger carbs. Setup properly your present bike setup should easily exceed a stock H1B.

If you have to purchase carbs a good and proven bigger carb for your 500 is a Mikuni VM34-168. This variant, other than its needle jet, is very close in the req'd H1 jetting. Niche Cycle supply offers these new for $99 each. A huge selection of needles/needle jets etc is another feature of using new carbs.

Even better power (with extensive porting) can be obtained with modern large flat slide carbs, but of course considerably more $$$ will have to be spent.

EDIT: Have a look at this for some easy stuff to wake it up:

http://kawasakitriples.myfastforum.org/about3703.html

J

Thank you. That's what I wanted to hear. I forgot to mention I have the stock air cleaner assy with the snorkle removed and a K&N airfilter and 750 size sprokets. I think I'll recheck my timing to the number you said. I know I'm jetted good because I have no dead spots throughout the RPM's and my plugs are alway tan. Never fouled one in 4 years having this bike. Your correct in my gaining weight since 1975 when I wrecked my H1B. I was 20 and 150lbs. Today I'm near 200. I guess I'm spoiled by my 1983 Suzuki GS1100E. I know it's apples to oranges. I guess I should've searched for an H2 instead.
Thank you again. Next step is break out the dial indicator.

Be prepared to re-jet after any adjustments /timing changes (further advancement of iggy timing from present settings almost always requires richer jetting) . Confirm at 4000 rpms the timing is still at 3.45mm with a suitable timing light....

J

Will do. Thank you ever so much.

Regards,
Jerry

Stock ported 500's are pretty much a snore, even with pipes. And riding a big block 1100 will make it feel even weaker. Than again stock port 750's are pretty much a snore also.

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Twist the throttle, tilt the horizon, and have a great time. What triples are all about...........

John has narcolepsy, ALL triples are FUN!

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We don't need no stinkin' Cams!

^ Yeah, I have a ZX10R, which is a fast bike, but I never got to Snore on a H2 - or any triple, for that matter.........!

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"One day, your life will flash before your eyes. Make sure it's worth watching." : anon.