Kawi2strokes.com Forum

Well the day of reckoning finally came today!!! Having completed the bike earlier on this year and used it at rallies and covered over 1000 totally reliable miles i thought it probably best to run it up on the dyno to see what power it has.
Dave at higgspeed kindly offered a while back to do a power run on his facility so today i had an afternoon booked off and arranged to take it up to Daves.

I really was apprehensive as i wanted it to perform ok but i also wanted it to hold together as obviously dyno testing is very hard on the engine.
So this is the dyno room
All the big talk ends here!!!

Dave warmed the engine up on the dyno and then did what was probably about 5 maybe 6 power runs.
We had a problem with the tyre spinning on the drum when the power came in and this gave false readings,but as the tyre warmed we had total grip and at last we could really go for it!!
Before i go any further i must say i can't believe how robust these 400 engines are even when given treatment that it would never get in the real world.
It was revved to oblivion (with my consent) yet didn't complain or misfire and after all that it settled down to a steady 900 rpm..remarkable really...
So heres a vid of one of the runs with dyno Dave at the helm.

http://www.youtube.com/watch?v=b1r5ZB5_W7c



So lets get down to the nitty gritty of this.
Heres a dyno print out of a standard s3 which has been previously posted.
As you can see it varies quite a lot compared to kawasaki's claim,but no suprises there!
Peak power at the wheel 30.1 hp

...and now heres the print out for project lash up.Please bear in mind that we didn't do a tune,just a power run and it is on 100% kr1s jets and needle positions.

That is impressive!

Please list the engine mods done for this thread.

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Answers are here: http://kawatriple.com/

Fantastic numbers!!!

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http://kawatriple.com/wtf/

Thanks Walms,i am really pleased.

Dale,spec is

Bike/year. 1980 kh400

Engine . standard bore,piston port

Crank/rods. rebuilt with modern mx rods

Pistons . Modified kawasaki

Cylinder heads. Reprofiled by Mick Abbey

Barrels. Pro-street tune by Mick Abbey

Carbs. kr-1s 28mm pwk semi flat slide

Exhausts. Mick Abbey expansions with tapered headers

Gearbox. Standard with one off taller first gear

Clutch. Standard 400 with barnett plates,Yamaha Rd springs

Ignition. Kawasaki cdi

Chassis. Standard

Forks. Standard with micron brace and modified springs

Swingarm. Standard type with 50mm extension

Shocks. 25mm longer pattern Yamaha Rd

Wheels. ARE 18" cast

Front Brake. Kh400 single piston caliper,with braided hose and brembo pads

Rear brake. Standard Kh

Master cylinder. zx9r b4

Man that thing has to be a riot to ride. All that power in the best handling triple of all. Nice work.

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"... don't drink the foam." Sonny B.

and it doesnt even feel tuned till you go through both its powerbands.

picks up from any revs.

its exceptional

Sweet! great job on the bike

Nice numbers and graph! You will catch a few 500's off guard I bet.......

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

Beautiful bike,and love that seat !!!!!! If you don't mind me asking how much did you have to pay for a seat like that ?????

Thanks for the nice comments guys,it is appreciated.
Barry,the 2/4 seats appear occassionally on ebay.I paid £50 for the seat and then about the same again to have it upholstered with the waterproof alcantatara.