ZX7 heads and cams compatable with KZ 650/750?

Are the heads and/or intake cams of any of the ZX7s compatable with 650/750 KZs? I hear the carb spacing is slightly different but other than that they seem almost the same as the GPZ. And I've searched the hell out of it finding very little useful.

THANKS!!!!

Yojymbo! wrote:

Are the heads and/or intake cams of any of the ZX7s compatable with 650/750 KZs? I hear the carb spacing is slightly different but other than that they seem almost the same as the GPZ. And I've searched the hell out of it finding very little useful.

THANKS!!!!

I don't know the answer for sure but...isn't the ZX7 a liquid cooled engine? If so, even if everything lined up, how would you keep the head cool on an air cooled cylinder block with no coolent flow?

Also, the ZX7 may have a side mounted cam chain...lots of problems

quick answer no! totally different engine as davel said it is liquid cooled and it does not have a center cam chain tunnel

I think he may be reffering to the Kawasaki ZR-7 and not the ZX-7. The ZR-7 motor looks to be nearly identical to the gpz/kz 750 engine. I bet alot of the parts are interchangeable. I remember a thread about a member using zr7 exhaust on their 750 and it bolted right up. Parts for the ZR are hard to find as they didnt sell very well.

Here is a link

www.sportrider.com/bikes/146_0012_kawasaki_zr_7/index.html

I belive a member here The Gringo, used a ZR-7 full stock exhaust on his kz 650, i rode that bike at mid ohio, and it was quiet and road like a raped ape. Im not sure about the motor parts interchanging, but it sure looks like they will.

jordan wrote:

I think he may be reffering to the Kawasaki ZR-7 and not the ZX-7. The ZR-7 motor looks to be nearly identical to the gpz/kz 750 engine.

Here is a link

www.sportrider.com/bikes/146_0012_kawasaki_zr_7/index.html

That makes sense. Does look like they reused all the old engine tooling.

Man...I wonder how hard it would be to shoehorn a 1000 motor into that bike... :S

Yes I was refering to the ZR7 not ZX, my mistake. Thanks for corecting me without making me feel the fool. You guys are OK!!

Yojymbo! wrote:

Yes I was refering to the ZR7 not ZX, my mistake. Thanks for corecting me without making me feel the fool. You guys are OK!!

The cams are identical for KZ750R1, KZ750N1/2, KZ700A, KZ750L3 AND ZR750C model (AKA 750 Zephyr). Later ZR750 models (F and H models) (post 2000 editions) have different part numbers.

Edit: Additional info...virtually all the KZ650 models shared cams and these were also the same as the ZX750E1/2 cams.

good question. I have not looked into that matter, but the zx750's in the late 80's up to my 1990 zx7 use the center cam sprockets. But as mentioned above are liquid cooled.