Will a kz750 engine work on a kz650?

  • ice
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01 Apr 2012 16:02 #513402 by ice
Will a kz750 engine work on a kz650? was created by ice
Will a kz750 engine work on a kz650?

Want to use a 750 engine on a 650.

Any advice?

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01 Apr 2012 16:20 #513404 by T_Dub
Replied by T_Dub on topic Will a kz750 engine work on a kz650?
Should bolt right in.
1977 KZ650B1
-810cc
-Cavanaugh Racing Head
-Mikuni RS34's
-GPR Muffler
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  • gd4now
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  • Denco where did you go?
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01 Apr 2012 16:24 #513405 by gd4now
Replied by gd4now on topic Will a kz750 engine work on a kz650?
The engine should bolt in, but there may be some differences between the electrical systems that will require some work.
1977 KZ650 B1
Pods and Denco header

OLD KAW OWNERS SMILE ALOT
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01 Apr 2012 20:34 #513443 by Godfrey
Replied by Godfrey on topic Will a kz750 engine work on a kz650?
I have a 1980 750 engine in my 81 650 frame :whistle: was a bolt in :evil:
1981 650CSR frame

1980 KZ750E engine

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02 Apr 2012 05:34 #513525 by shockman54
Replied by shockman54 on topic Will a kz750 engine work on a kz650?
@ godfrey, did you have to change any of the electrical around?

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  • DoubleDub
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02 Apr 2012 06:53 #513528 by DoubleDub
Replied by DoubleDub on topic Will a kz750 engine work on a kz650?
Afaik the electrical that would need to be changed would be related to the charging system. Just swap that (regulator and rectifier) over with the kz750 engine and you should be fine.

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