Originally posted by afm
I thought the STS MT12RS was a long conrod engine, just like the Mugen MT12, if so, did you check that conrod lenght was the same with the Novamega's??? I think the Novamega SX12RE is a short conrod engine. If that is the case, your engine is running way under compressed, unless your STS is not MT and is RS, than you can expect good performance.
AFM
Thanks AFM.
All STS .12 engines are short rod. And almost all parts can be exchanged with each other.