z750 motor

[big green bus]

can anybody tell me which engine this is gpz750 r1 z750L4 or gpz750 a etc

KZ750EE141285

[GIMPieZ650]

As far as I know kz750EE means its a z750e engine, basically an over-bored late model z650 engine

[ADRIAN H]

Z750E - engine number -

link to frame / engine numbers -

http://zedder.com/msg1.htm#Kawasaki

[big green bus]

the motor I have found out is an z750 L4 or a gpz750 A2 does anybody know any difference between those two? it has a auto advance on it and a cable clutch not a push rod (but this may have been changed at some point)

[z1bman]

zx750 a2 uses a timing disc z750 l4 uses mechanical advancer

[coldsummer]

I fucking love z1bman.

[z1bman]

engine no makes it a zx750 a2

[Crofty]

GPZ had bigger combustion chamber, but higher crowned pistons to give same CR of 9.5:1,
GPZ had the hot cams (esp the A1,2 and 3 models, up 0.5mm on the twin shock GPZ and 1mm on the base 750.
As stated by Z1B man the ignition system differed.
The inlet tracts on the GPZ unitrack engines was also factory worked with mild porting job around the guides and valve seats.
Installed valve height on the GPZ was also larger due to the exhaust cam having a smaller base circle.
GPZ A1 was 85 to 87PS (depending on which market it was made for), the L3 was 80PS.
Final drive ratio was different, but internally the same.
Clutch release was different on the A models being on the clutch cover itself and not by pushrod through gear shaft from sprocket side.


My workshop manual does not go beyond A1/L3, but they will be close

[big green bus]

thank you for the replies chaps