Kawi2strokes.com Forum

Enthusiasts from around the world dedicated to the preservation and ritual flogging of the infamous Kawasaki 2-stroke Triples
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PostPosted: Sat Jul 13, 2013 8:49 pm 

Joined: Thu Jun 09, 2011 9:13 am
Posts: 1001
Location: Auburn Ca
sweet nice to see it coming along so nicely and in sac too. Tomorrow I can finally start getting mine out of storage as we had a garage sale last weekend to clear out my garage, not hers lol, but she don't mind.


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PostPosted: Mon Jul 22, 2013 11:33 am 
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Joined: Mon Jun 13, 2011 7:14 pm
Posts: 936
Location: Martinsburg, WV
Keep up the great work and updates. :thumbup:

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74 H2B with reeds and 34mm carbs
75 S3A Ram Air with reeds and 30mm carbs
73 S2A (wife's bike)
71 Yammi RT1B
83 HD Sportster
03 Yammi R1
06 Kaw 750 Vulcan (wife’s bike)
12 Yammi vstar 250 (wife’s bike)


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PostPosted: Mon Jul 22, 2013 1:12 pm 

Joined: Mon Aug 06, 2012 2:57 pm
Posts: 848
Location: Monterey Ca
Nice job Darrin,

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Current bikes: H1 69,71,72,76 KH 500, H2 72(2),73,74,75(3) , 77RD 400, 08 KLR 650. 76 KZ 900, Yamaha RZ 500, ihave so many triples gave up listing them.
Have seversl tons of H1/H2/S parts for sale, http://www.triplestuff.net dhg1337@gmail.com


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PostPosted: Tue Dec 24, 2013 9:15 pm 
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Joined: Fri Jun 10, 2011 11:04 am
Posts: 3490
Location: Capitol of Ca, USA
Moving slowwwwwwly. But I just got my top-end back from Scott Clough! These are just pasted up comparisons between a stock head and his reworked parts. I should mention that my center deck height measured slightly less than the outer two cylinders. Here's some info from Scott:
"I set compression pretty close to what I estimated from the measurements to be stock, which comes out to about 150psi...about as high as I want to go with todays gas. You will use the stock head gaskets, and I left the center head with about 1/3cc more volume for the hottest cylinder. All cylinders are the same height within about .002", I took about .048" off the tops. The heads were a bit of a pain, since nothing was concentric; the spark plug hole, cast chamber, and the cut groove, were all on slightly different centers. I had to shim and offset each head to center the chamber with the stud holes, which is what locates the head on the cylinder. Squish clearance should be checked, the target was .030", acceptable would be about .025-.040".

I have another John Aylor referral for the same process on the way in, so I have everything recorded to make the next one easier."
:eh: .
Image
Image

After I had asked Scott about recommended jetting, plug, or timing changes:
"I doubt you would need any spark plug heat range change, I would expect 8's for any street use, 9's for track or extended high speed use. Jetting probably won't change much if at all, depending on how well it was dialed before, but you certainly want to check it. With the much improved squish there may be a benefit to trying different ignition timing settings, possibly less advance if the burning is faster. The compression is actually no higher than what I estimated was standard, but is on the high side for today's fuels in my opinion.

You should check squish clearance once assembled, target was .030" at the outside edge, acceptable range is .024-.038". You will use the stock head gaskets, I would use a sealer such as Coppercoat spray, hi-temp silicone like Permatex Ultra Black (I use this a lot, on some gaskets, manifolds, pipe fittings), or you can use a little aluminum spray paint. I left the center cylinder with .3cc more volume for lower compression since it runs hotter than the outers"
.

One last note...if you think you might want to have Scott perform some of his quality work on your "little" (meaning non-racer/race team) Triple stuff, I'd recommend asking him soon and during the off-racing season. :think:

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"Only cheat the cheaters, boy - you can't cheat an honest man!" Mordecai Jones - The Flim Flam Man.


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PostPosted: Tue Dec 24, 2013 10:05 pm 

Joined: Thu Jun 09, 2011 9:13 am
Posts: 1001
Location: Auburn Ca
sweet guess its a very merry xmas :thumbup:


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PostPosted: Fri Dec 27, 2013 7:24 pm 

Joined: Fri Dec 27, 2013 6:56 pm
Posts: 7
Location: Limoges, ON
Nice job buddy!!!! Hope to get my S3 started soon.


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PostPosted: Fri Jan 03, 2014 3:55 pm 

Joined: Tue Aug 13, 2013 10:22 am
Posts: 865
Location: Dayton, Ohio
Man, the cylinder heads are way cool !


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PostPosted: Fri Jan 03, 2014 4:02 pm 

Joined: Tue Aug 13, 2013 10:22 am
Posts: 865
Location: Dayton, Ohio
Kawi3cyl

Does that added hole mod work on the H2's and H2B\C ?.........makes sense for sure

THX Phil


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PostPosted: Fri Jan 03, 2014 7:00 pm 
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Joined: Tue Jun 07, 2011 6:37 am
Posts: 10460
Location: Rio Rancho, New Mexico
Scott does his heads differently than I do mine, He does more of the RD Yamaha type dome. Either way it's just opening up the area where the plug is, for a better burn.

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


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