Squish/engine clearance setup

There seems to be more and more members appearing that are racing the ZXR400 so i've created a special section just for you to show off results, discuss meets etc etc.

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ChowderV4
Posts: 97
Joined: Mon Dec 24, 2012 7:57 pm
My Bike: Zxr400L racer

Squish/engine clearance setup

Post by ChowderV4 » Wed Oct 09, 2019 10:15 pm

Currently dry building/refreshing my motor, setup is

Standard crank
1208rods weight matched
+1mm je pistons
Head skimmed 0.3
Base gasket fitted
Standard M ECU on stock rev limit

Squish is coming up at 0.67-0.72
Valve to piston is all very safe too.
Is this sounding the norm for squish clearance for similar setups of yours?


Had the engine built before with the same setup but with 1173 rods that had been in the motor for a few seasons.
First with stock pistons and skimmed barrels, then with the current +1mm and stock barrels
Ended up having the pistons kissing the head on both occasions, anyone came across this due to rod stretch as the squish clearance was the same as I'm measuring it now?

Cheers

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