Author Topic: kawasaki 750 h2  (Read 13708 times)

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Offline BDI

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kawasaki 750 h2
« on: April 18, 2010, 10:56:13 AM »
Well I finally got a wild hair and decided to start on this project. I know it is not a kx but I plan on applying the knowledge learned from playing with my 500 to this bike. I would like to hear any ideas you guys have and any knowledge you guys may have on h2 resources. This bike is a three cylinder 750 two stroke so I would like to get my hands on three 1999-2002 kx250 carbs and complete electrical systems. The intake and electronics are the first things I would like to get squared away. I'm a construction worker by trade and the economy has not been very kind to me lately so I'm trying to get this thing running as cheaply as I can. It has three of everything so it will cost three times as much as a normal bike so I'm hoping to get some good deals on some good parts. Thanks in advance to everyone at Kx riders for any help and or support I can get on this project.
Smoke every cigarette like It's your last and ride like you stole something!!!

Offline Friar-Tuck

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Re: kawasaki 750 h2
« Reply #1 on: April 18, 2010, 11:34:25 AM »
 OOH Hoo!  8-)
  I spent alot of time oogling over you tube and sifting through pages of bing results.
I hadn't saved any bookmarks as I didn't know anyone who had one. :|
   I'm working on a friends 85 crx so during breaks I'll send over what I can as far as links and all..
   Good luck on the project B, I know you'll do a bang up job...
   Tuck\o/ 
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Offline Hillclimb#42

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Re: kawasaki 750 h2
« Reply #2 on: April 18, 2010, 12:31:16 PM »
Are you planning on restoring it as a streeter or transplanting that into a dirtbike chasis?

Offline kaw rider

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Re: kawasaki 750 h2
« Reply #3 on: April 18, 2010, 12:50:42 PM »
Brian
i would install a 809 rotax ignition on it. then weld on some reed cages. Then a set of pwm.

Offline cbxracer30

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Re: kawasaki 750 h2
« Reply #4 on: April 18, 2010, 12:59:54 PM »
I had of these beasts , it put out 148 horsepower without the juice. Purplehazeracing.com is a great parts source also Fastbygast.com . To put the big carbs on you'll have to have the backs of the cylinders welded up , get a set of snowmobile mikuni-style intake boots,  so you know how much needs to be welded , then you have the backs of the cylinders machined flat, drill , tap and install .intake studs, mark the opening and start grinding the hole open. I ran 38mm mikunis on mine , also not all the carbs will run the same jets it took me 2 pistons til I figured that out. Also the Fastbygast over-shift mod on the shifter shaft is real nice , second gear is extremely hard to come by , the only new ones ouit there run around 500 bucks.CBX
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Offline BDI

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Re: kawasaki 750 h2
« Reply #5 on: April 18, 2010, 02:29:47 PM »
I had of these beasts , it put out 148 horsepower without the juice. Purplehazeracing.com is a great parts source also Fastbygast.com . To put the big carbs on you'll have to have the backs of the cylinders welded up , get a set of snowmobile mikuni-style intake boots,  so you know how much needs to be welded , then you have the backs of the cylinders machined flat, drill , tap and install .intake studs, mark the opening and start grinding the hole open. I ran 38mm mikunis on mine , also not all the carbs will run the same jets it took me 2 pistons til I figured that out. Also the Fastbygast over-shift mod on the shifter shaft is real nice , second gear is extremely hard to come by , the only new ones ouit there run around 500 bucks.CBX
Thats pretty much what I want to do but I'm going to use v-force valves in it And I think it would be cool to have three pwm carbs with the power jet and the kx250 electronics running each cylinder, recut the head, porting and all that kinda good stuff good pipes. Who makes good pipes for these things? do you know?
Smoke every cigarette like It's your last and ride like you stole something!!!

Offline BDI

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Re: kawasaki 750 h2
« Reply #6 on: April 18, 2010, 02:45:18 PM »
If you check out this guys build you will see what I want to do. The reed blocks use the same reads as the kx500. That means I will be able to buy a set of kawasaki water craft V-force valves for it.

                     http://www.thunderroadbikes.com/kawasaki_750_h2.htm
                                         
Smoke every cigarette like It's your last and ride like you stole something!!!

Offline fluffy

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Re: kawasaki 750 h2
« Reply #7 on: April 18, 2010, 02:49:57 PM »
if i remember those bike from my past the only real complaint anybody had was the handling. they were fast stock,if in fact they were stock. good luck and hold on.

Offline Goat

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Re: kawasaki 750 h2
« Reply #8 on: April 18, 2010, 03:01:20 PM »
Looks like a sweet project. I'm gonna keep watching this one. :D
It's hard to keep a drivers license riding a 2 stroke dirt bike on the street.  If you drive within the law they are VERY boring.

Offline BDI

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Re: kawasaki 750 h2
« Reply #9 on: April 18, 2010, 04:27:23 PM »
Ridding a 150 horse two stroke motorcycle around on the street has to be fun.
Smoke every cigarette like It's your last and ride like you stole something!!!

Offline Hillclimb#42

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Re: kawasaki 750 h2
« Reply #10 on: April 18, 2010, 11:23:08 PM »
My buddy Paul races an H2, on a 250 chasis. His has no reeds. I don't know how. He used 250 pipes and reshaped them. Another Guy Lloyd Haause has Chrome plated pipes, but i don't know where he got them. He is always at the Polo Hillclimbs, another guy Tommy Daniels has one with chrome pipes. Guys that work on jet skis are pretty helpful. they are used to dealing with the triple design. There's a guy hillclimbing one in a quad chasis at Nationals last year with reed cages that had overall fast time in the first round last year.

They are super powerful stock. Paul's cylinders are jetted equally on his 750, but on the modified engine the center cylinder wanted to run hot. Frequent plug checking on that one to get it jetted right. The triple will run on two cylinders, so you have to keep your ear tuned up also.

Correction: Paul said the he used Banshee 350 pipes.

His clutch is hard to pull in. So hard to pull in that the ball on the end of the shaft actually stuck on the shaft. We had to cut the ball off and file it. Real small clutch basket and springs for so much power, too.
« Last Edit: April 21, 2010, 12:18:45 AM by Hillclimb#42 »


Offline BDI

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Re: kawasaki 750 h2
« Reply #12 on: April 19, 2010, 02:07:00 PM »
So I ran into a kink today. I don't have titles for either of the H2s I have. I thought no big deal I'll just title search them. Ya right the B at the dmv told me nope If I cant prove they belonge to me there's nothing they can do. My two options are call a toe company and have them hauled off (YA RIGHT) and then have them do a lean sale on the bikes and sell them back to me or figure out how to get a court to award them to me. Then she said something else like "NEXT".
Smoke every cigarette like It's your last and ride like you stole something!!!

Offline Goat

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Re: kawasaki 750 h2
« Reply #13 on: April 19, 2010, 02:36:47 PM »
The DMV is never helpful when you need it most. Hope you can get all that garbage straightened out. Good luck.
It's hard to keep a drivers license riding a 2 stroke dirt bike on the street.  If you drive within the law they are VERY boring.

Offline JBKX

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Re: kawasaki 750 h2
« Reply #14 on: April 19, 2010, 02:58:42 PM »
Back in the late 80's I was pit crewing for my dad at a divisional race at Noble, OK.  We were in the pits early in the morning when a guy with a full drag H2 fired the bike to warm it up.  It was the craziest sound I had ever heard.  I high-tailed it to the bike and about crapped my pants.  Alcohol/Nitrous bike running in ProET Bike.  The cat riding it looked Manson type crazy.  It ran mid 8's at 160+ if memory serves me right.  What great memories.  Good luck with the build.
2) 1986 KXT250 TECATE 3's
1986 KXT500 TECATE
2001 KX500SF