December 12, 200718 yr i am just curious what the difference between a non turbo head and a turbo head. will a not turbo head work on a turbo. just wondering. Thanks Jason
December 12, 200718 yr the heads are almost the same, combustion chambers, valvetrain and all that is the same (cams may be different, depens on donor vehicle) the PS turbo heads have an extra oil passage for the turbo on the backside which can easily be plugged if on a NA engine, the other way around is a bit harder since you need to drill the port or get your oil from somewhere else.
December 12, 200718 yr The major difference is between MPFI and SPFI/Carb. Not nessecarilly whether it was turbo or not. All turbo ea82s are MPFI, but not all MPFI are turbo (XTs and early GL-10s had MPFI non turbo) MPFI heads have dual intake ports, and use a completely different intake. Won't bolt up to a non MPFI. All other EA82 SPFI and Carbed used a single ort for intake, adn can swap intakes easily(carbed or SPFI) but again won't bolt up to the MPFI manifold
December 13, 200718 yr was thinking of the EA81T Right, but on all the rest the injectors are in the manifold. So that really only applies to those weird EA81T heads.... GD
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