Ski Doo 800 compression ratio
This is a discussion on Ski Doo 800 compression ratio within the Engine forums, part of the The Performance Tuning Shop category; Can anyone tell me what is the max comp ratio I can run on a series III 800 being run at about 800 feet? I ...
Can anyone tell me what is the max comp ratio I can run on a series III 800 being run at about 800 feet? I have done the following mods: Dynoport Pipe and Boyseen reeds and spacers. I just bought a speedworks 13:1 head that is recommended for a ported engine. I'm courious if I can safely run this on a none ported engine with 91 octane? If not is there a way to lower the compression slighly so it will work?
Mabey you should talk to Speedworks
What is your compression, you may need to run a high octane fuel if it is too high
To lower your compression is to add a thicker base gasket or a spacer under your jugs, but then your port timing is all screwed up
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