’99 Mach-Z Gasket, Compression and Top RPM

Question:

I own a ’99 Mach-Z and I’d like to know which gasket between 0.3, 0.4, 0.6 mm is better and also what is the compression and top rpm.

Thanks,

Erik

Response:

The highest compression ratio will be achieved with the .3mm base gasket. Premium fuel must be used at all times if you go this route. Otherwise use the one that was originally on the engine.

The cold cranking compression is approx 135-140 lbs. We don’t print this due to variations in gauges and conditions. It is just a basic indicator of a healthy engine.

Any good performance shop will CC the cylinder head and combustion chamber if performing modifications.

The RPM if stock pipes are used is approx 8100. Later models turned slightly higher RPM closer to 8200-8300.

Hope this helps.

Gordie Radtke
Ski-Doo

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