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PostPosted: Fri Jun 10, 2011 9:21 pm 
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Joined: Fri Jun 10, 2011 8:41 pm
Posts: 45
Location: Irvine, CA.
This is so the guys will have an idea to where to start their jetting. Please post motor mods, and altitude. :thumbup:

1975 S3a
26,xxx miles
2nd overbore, factory pistons
Stock porting and carbs
Stock slides, 2nd set of stock needles, set at 2nd from top notch.
Stock pilots, 1.3/4 turns out, give or take...
Main jets from 100 to 105, currently running 105s
Stock points, plugs, wires, timing set to factory pointers.
Denco street chambers, baffles fully packed.
Stock oil pump backed off to closed throttle stop, cam pointer is 1/4 inch from full-throttle pointer at full throttle, but no slack in cable.
Castrol GP s-stroke oil.
Premium fuel
I'm in Southern California, at sea level...
I use one of those old carb tools with the floating ball to set idle adjustment, if you spin the center disk all the way in, it will actually work!
For full throttle slide adjustment, I use my fingers to see if the slides are equal at the top of the carb bore at WOT, adjust cables as needed.
I special ordered a set of big K@N oval air filters to match the stock carbs, but midrange suffered, as it does with no filters. The solution was to use the stock air boots (between the carbs and stock airbox) and cut them down to about 1.75-2.0 inches, and mount the airfilters to those with pop rivets. This really helped the 4000-6000 range.
Around town, the bike is a pussycat, it pulls smoothly from 3500 without loading up, no blubbering at part throttle,but really comes on around 5500, with the peak arriving at about 7400. It pulls hard to about 8500, not much else above that, excellent torque, with a big push at every upshift, the nose actually rises with every new gear! The Dencos really made a big difference! It pulls in 3rd like it used to pull in 2nd with the stock pipes!
Part throttle is very sensitive to needle height, one notch up or down makes a big difference.
I think the chambers made a big torque difference, rather that HP. I can lift the front in first regularly, just twist!
Hope this helps someone.
CB
UPDATE!! 6/26/08
I have now set the mains at #100, put the needles in the leanest position, and set the timing a touch retarded...Im using points and a test light, setting timing at about 2mm past the pointer in the window (scientific, EH?)
The pilot adjust screws are now in the 2-2.5 turn range, runs excellent at
sea level, about 80f outside...I used H2Runners tuning tips on the carbs.
I think it's the bikes' best best tune yet! I wouldn't change a thing!!
CB
Update 7/7/08
I now use a 3-wire Tach-Dwell to set my points (29 degrees on 6-cyl scale) and a timing light to set to stock pointers, really runs better, more even running, better throttle response!
CB

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"That bike is worth nothing"
Kawasaki dealership salesman, when I considered trading my S3 400 for a used GPz 750 in 1992.


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 Post subject: Re: here's my specs...
PostPosted: Tue Nov 08, 2011 6:52 am 
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Joined: Wed Jun 08, 2011 10:04 pm
Posts: 2188
Location: Just north of Toronto, Ontario
400trip wrote:
I actually posted this for future reference...hidden in plain sight!
CB



I liked that thread on the old board for carb jetting, like you said, a great place to keep your specs for future reference.


H1D motor


Carb Type: Keihin PJ 34mm
Pilot size: 38
Needle: AJP
Clip:2nd groove (lean)
Needle Jet: N/A
Main: 160
Slide: 6.0
Engine Size: 500
Porting: Stage 2
Heads: Squished
Note: JA reeds

Cut Piston: just a couple holes
Air Filter: UNI filters
Chambers: WTF
Altitude: 1426 ft

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PostPosted: Fri Sep 28, 2012 7:11 pm 
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Joined: Fri Jun 29, 2012 7:22 pm
Posts: 503
Location: Syracuse , New York USA
1977 KH 400

Stock pistons
Higgspeed chambers
Uni filters
S3 carbs
#100 mains
22.5 pilots
Clip postion 3rd
Elevation 500 to 800 feet above sea level

I moved clip to 2nd from top, ran better a little to zingy.. Plugs to lean for me went back to 3rd
800 plus miles no issues....

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1977 KH 400
1972 H2 750
1973 DT 250
1976 KV 75


Last edited by JohnnyO on Fri Sep 28, 2012 8:10 pm, edited 1 time in total.

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PostPosted: Fri Sep 28, 2012 7:53 pm 
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Joined: Thu Jun 23, 2011 2:26 pm
Posts: 1752
Location: Running Springs Ca
72 H2

late cylinders with stock porting
Denco street chambers
stock carbs with 107.5 mains
stock slide and needle jet with clip on #3
pilot jets unknown size
uni pod filters
stock cdi

Runs great from 1000ft elevation to 6200ft up the mountains. Plugs look nice and tan,same set for 2000 miles.


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PostPosted: Sat Oct 06, 2012 4:58 pm 

Joined: Thu Nov 17, 2011 11:01 am
Posts: 1
1975 S3 with 1973 S2 engine. 92.5 mains, stock pilots and needles. S2 dencos, pod filters. S3 carbs. Likes a little advance timing, very strong.


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PostPosted: Thu Nov 29, 2012 10:23 pm 
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Joined: Wed Jun 08, 2011 5:34 pm
Posts: 2083
Location: Front Royal, VA
1973 S2A stock porting 3000 miles on motor
S3 carbs
GT 380 J&R power pipes
Boyer Brandsen Ignition
20 pilots clip 1 lean
Air screws at 1.5
100 main jets
Uni foam 5 inch filters
Timing 1 mark width retarded
Linear from idle to 9000
1000 feet AGL planet earth
93 UNL with 10% corn squeezins'

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Home of the Phoenix Project
Stay in it when it comes on the pipe, no need to be scared...


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PostPosted: Mon Dec 03, 2012 12:11 pm 

Joined: Tue Dec 27, 2011 11:37 pm
Posts: 726
Location: SUNRISE FLORIDA USA
1972 H2. Late cylinders with oil jets added. 40 over Wossners. Race pipes with silencers. Two stage UNIs. Lakeland electrics. H2a needles on 4th clip down. 35 pilots. 100 mains. stock porting and timing. 100s sound lean. bike seems to like it. (stock H2a runs 97.5 mains) 1.5 turns out exactly on the air screws.

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1972 H2, modified and Tracy bodied. 77 Kawi 1000. Lime green. Cafe. Lester wheels.


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PostPosted: Mon Dec 03, 2012 12:23 pm 
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Joined: Wed Jun 08, 2011 10:23 pm
Posts: 3491
Location: Colorado Springs, CO. USA
Dale still has a good user spreadsheet on the resource board.

https://docs.google.com/spreadsheet/ccc?key=0AnD68ZypdH9McGQ3RmRkeF91RkZycm9DTFE3dmlhUXc#gid=0

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This is true. Where I grew up the hills were so steep and long, when your ball rolled down the hill you just said "screw it"...


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PostPosted: Mon Dec 03, 2012 1:07 pm 
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Joined: Wed Jun 08, 2011 10:04 pm
Posts: 2188
Location: Just north of Toronto, Ontario
Mraxl, yer da man!!!
If we have updates Dale, would you prefer we email you or post here?

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http://kawatriple.com/wtf/


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PostPosted: Sun Dec 30, 2012 3:50 pm 
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Joined: Thu Jun 23, 2011 2:26 pm
Posts: 1752
Location: Running Springs Ca
Everyone that is using Ivan's jet kits should update the Jetting spreed sheet. I'm about to jet a late H1 with his kit and will post my jetting as soon
as it's sorted.


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