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Enthusiasts from around the world dedicated to the preservation and ritual flogging of the infamous Kawasaki 2-stroke Triples
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PostPosted: Wed Feb 08, 2012 7:30 pm 

Joined: Mon Nov 21, 2011 12:34 pm
Posts: 676
Location: orange CA
I dig playing with small bore two strokes too. Locked up my 175 again on the toll road today. :oops: It ran probably the best ever up to this point. Is it even possible to make an air cooled motor wind wide open for ten miles or so? Without detuning it a ton? I have a 36 mm mikuni to try.


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PostPosted: Wed Feb 08, 2012 7:55 pm 
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Location: North Alabama
sawracer wrote:
I dig playing with small bore two strokes too. Locked up my 175 again on the toll road today. :oops: It ran probably the best ever up to this point. Is it even possible to make an air cooled motor wind wide open for ten miles or so? Without detuning it a ton? I have a 36 mm mikuni to try.



Go a size larger on your main jet !
But 10 minutes.....ummmm.......

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PostPosted: Wed Feb 08, 2012 8:04 pm 

Joined: Mon Nov 21, 2011 12:34 pm
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Location: orange CA
Main jet is larger already. I found the problem, base gasket failed. Rats, guess I need to three bond it next time.
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PostPosted: Wed Feb 08, 2012 8:13 pm 

Joined: Mon Nov 21, 2011 12:34 pm
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Location: orange CA
One of the four bolts that hold the cylinder came loose, which in turn allowed the gasket to come loose and suck air like no tomorrow. What did you break today ? :D


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PostPosted: Wed Feb 08, 2012 8:15 pm 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
sawracer wrote:
One of the four bolts that hold the cylinder came loose, which in turn allowed the gasket to come loose and suck air like no tomorrow. What did you break today ? :D


wind........ :lol:

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


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PostPosted: Wed Feb 08, 2012 8:21 pm 

Joined: Mon Nov 21, 2011 12:34 pm
Posts: 676
Location: orange CA
It's not easy flying the vintage flag. Gotta get my h2 or Rd finished, something that'll lug at 75 mph with ease and not vibrate apart.


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PostPosted: Wed Feb 08, 2012 9:05 pm 

Joined: Thu Jun 09, 2011 11:25 am
Posts: 3156
What Erv Kanemoto used to do was center punch the base gasket areas on both the cases and cylinders, to five a little spike for holding base gaskets.

Yamaha TZ road racer engine base gaskets are a stainless steel, with carbon sealing facing on each side, and they are very hard to get to leak.

If I had my way, Kawasaki two stroke base gaskets would be dead soft aluminum sheet, and then, and only then, I'd use the Three Bond 1194 to seal 'em up. Or, I'd make 'em like the Yamaha ones, they also work well, and are reusable as well.

On the latest version of what I'd do to the base gaskets areas on triples, I'd machine the top of the cases to allow for a fairly thick single base gasket area, then, weld that one piece base to the cases, then finish ill flat. This way, I'd have a flat area that has a larger area around the transfer ports for gasket retention.

Erv's method works well.


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PostPosted: Wed Feb 08, 2012 9:23 pm 
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Location: Rio Rancho, New Mexico
I would say just do a little preventative matainiance, and check the bolt tightness from time to time. That was the problem......

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


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PostPosted: Thu Feb 09, 2012 4:59 am 

Joined: Tue Dec 27, 2011 11:37 pm
Posts: 726
Location: SUNRISE FLORIDA USA
Always GOT to be suspicious when a small two stroke runs "better than usual and with more power". Almost always too lean and about to lock up. Reminds me of the day in 1978 when my little Honda moped went about 35mph...I was thrilled...for a short while. :lol:

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PostPosted: Thu Feb 09, 2012 8:05 am 
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Location: North Alabama
Ja-Moo wrote:
I would say just do a little preventative matainiance, and check the bolt tightness from time to time. That was the problem......


+1....I check mine about every 600 to 800 miles. I'm also nutty about getting my gasket surfaces perfectly clean.

While on the subject of tightening things....I also have my swing arm get loose on occassion. Started using lock-tite.

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