Kz750e dyno

Maxbou92
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31 Jul 2024 16:20 #902698 by Maxbou92

Kz750e dyno was created by Maxbou92

Hello guys, my bike just left the dyno.. somebody would like to know how many horsepower it gonna have.. so New engine oversize 0.5mm(150psi each one), vm28ss carburetor with pod filter, mild porting, milled head, 4-1 exhaust. 72whp 9500rpm and 43ft torque at the weel 8000rpm(12.3 to12.8 AFR). Don’t know if its good.. my clutch is slipping like hell with Rotella 15w-40 ?!! Dont know if its the clutch or oil?!

Kz750e 1980

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Injected
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31 Jul 2024 17:30 #902703 by Injected

Replied by Injected on topic Kz750e dyno

The claimed factory rating for a 1980 KZ750-E1 with stock parts was 74 HP SAE (at the crank) A rating at the wheel is usually 10-12% lower ( = 66 to 67 HP) They did not mention torque but I would guess around 40 LBFT. You gained a little bit of HP with exhaust and carb swap, seems normal to me.

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Nessism
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31 Jul 2024 17:44 #902706 by Nessism

Replied by Nessism on topic Kz750e dyno

That sounds excellent to me! I'm surprised it's that much. Sounds like a sweet ride!

Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

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Maxbou92
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31 Jul 2024 17:51 #902707 by Maxbou92

Replied by Maxbou92 on topic Kz750e dyno

Thank you, for my clutch. What are you thinking? Oil or clutch ?

Kz750e 1980

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Maxbou92
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31 Jul 2024 17:51 #902708 by Maxbou92

Replied by Maxbou92 on topic Kz750e dyno

Kz750e 1980

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Nessism
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31 Jul 2024 19:04 #902712 by Nessism

Replied by Nessism on topic Kz750e dyno

New OEM clutch springs. The oil is fine.

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hardrockminer
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31 Jul 2024 19:39 #902713 by hardrockminer

Replied by hardrockminer on topic Kz750e dyno

I use Rotella in my bikes with no clutch issues. Just make sure the oil has the JASO certification.

I have several restored bikes along with a 2006 Goldwing with a sidecar. My wife has a 2019 Suzuki DR 650 for on and off road.

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Maxbou92
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01 Aug 2024 00:19 #902720 by Maxbou92

Replied by Maxbou92 on topic Kz750e dyno

I already have nee Barnett clutch springs.. and the diesel oil is rated Jaso . The clutch slip in high gears at 7000 rpm

Kz750e 1980

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Wookie58
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01 Aug 2024 00:33 #902722 by Wookie58

Replied by Wookie58 on topic Kz750e dyno

This would suggest an adjustment or cable issue (not enough "free-play") if the clearance is too small the clutch will heat up and reduce the clearance further (like resting your foot on the pedal in a car)

1982 KZ1000 Ltd
www.kzrider.com/forum/11-projects/617631...-82-begins?start=192
kzrider.com/filebase-alias?view=download...d-fault-diagnosis&ca

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Maxbou92
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01 Aug 2024 00:38 #902723 by Maxbou92

Replied by Maxbou92 on topic Kz750e dyno

I tightened the adjuster nut and backward 1/2 turn. I have a big free play on the handle!! New cable too. Soo weird

Kz750e 1980

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Nessism
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01 Aug 2024 06:50 #902742 by Nessism

Replied by Nessism on topic Kz750e dyno

With age and mileage, the fiber plates are known to petrify. It may be time for a new set.

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Maxbou92
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01 Aug 2024 07:19 #902745 by Maxbou92

Replied by Maxbou92 on topic Kz750e dyno

All right, I will put my new Kawasaki Fiber plates soon!!

Kz750e 1980

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