The question of GRP 21 Tuned engine

Dear all friends:
                 Anyone find the information about Fule .vs. Underhead copper gasket , the best working temperature of engine after reading the GRP engine manual?
                  It's the key point of engine's performence. Or anyone can share the information about this ? Thanks alot

原帖由 gilolo 於 2009-3-13 02:29 發表

                               
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Dear all friends:
                 Anyone find the information about Fule .vs. Underhead copper gasket , the best working temperature of engine after reading the GRP engine manual?
              ...

Use standard Head Shim(the underhead copper gasket)should be 0.6mm for 25% nitro. For 30%, add 0.1mm.

Running temp 100C, ( of course if you use NitroX , you can run to 110C or higher)

Run your engine for 3 to 4 mins, switch off engine and read your Plug, it should still have some oil on it. If no oil, meaning you running to lean.

good luck