I am using the VZ 21 turbo. You can use thick gaskets to lower compression. But you need forged pistons. Wossner or JE will make anything you need. Either way you will need to deal with changing cam timing.
I addition to the turbo I am using Ecotrons fuel injection system. I am building a turbo with low boost. Under 7 psi and using high compression. This is an all out race engine not for the street.
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Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
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