Jun 25, 2017 #1 T Trazy2017 Junior Member Joined Jun 25, 2017 Posts 11 Reaction score 0 Location Wi I brought my 2.2 to machineshop, they milled head. Compression to 10.0:1, polished ports, radiused first inch into port, then polished inaide of tb. Gasket match intake and exhaust ports. Makes a difference, but need 91octane only.
I brought my 2.2 to machineshop, they milled head. Compression to 10.0:1, polished ports, radiused first inch into port, then polished inaide of tb. Gasket match intake and exhaust ports. Makes a difference, but need 91octane only.