Originally Posted by
sammies
According to the write-up, ORCAN's new .21 RS7 is tuned for 16% fuel.
The engine comes with 0.4mm head shims.
If I were to run this engine on 25% fuel, do I need to increase the shims? If so, by how much?
Thanks in advance.
Sam
Hi Sammies,
I asked the guy behind ORCAN and this is his reply
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The RS7 is with 0.40 shims perfect for 25% nitro at sea level and also for 16% by 300m above sea level.
If they drive with 16% at sea level they can drive so, or can put 0.05 shim out maximum 0.10 so they have with 16% nearly the same power as with 25%