what are the differences between the EA82 N/A heads and the EA82 turbo heads? do the turbo heads have larger ports or valves?

 

I know the cams are different.. but thats all i know..

EA82 N/A heads have a single intake port and a single exhasut port. EA82 Turbo heads have 2 intake ports and a single exhaust port. Those are the most obvious differences, basically a Turbo head can't be used as a replacement for a N/A head, the manifold wont bolt up to it. Also the passenger side head on the Turbo heads has oil and coolant ports for the turbo.

 

-Bill

EA82 N/A heads have a single intake port and a single exhasut port. EA82 Turbo heads have 2 intake ports and a single exhaust port. Those are the most obvious differences, basically a Turbo head can't be used as a replacement for a N/A head, the manifold wont bolt up to it. Also the passenger side head on the Turbo heads has oil and coolant ports for the turbo.

 

-Bill

 

Would there be any real benefit to modding the turbo head for a N/A motor?

Would there be any real benefit to modding the turbo head for a N/A motor?

 

You would then have the MPFI non-turbo EA82 as seen in the late 80's XT's. The benefit is about 9 HP with fuel injection, 9.5:1 comp. pistons, and the right cam.

 

Not worth the effort.

 

GD

You would then have the MPFI non-turbo EA82 as seen in the late 80's XT's. The benefit is about 9 HP with fuel injection, 9.5:1 comp. pistons, and the right cam.

 

Not worth the effort.

 

GD

 

That is around what I was thinking, but I wasn't exactly sure. These little cars are still pretty new to me.

there arent any spfi turbo heads? i thought the 3 port heads only came on the XT's.. so the regular old gl-10s had 3 port too? just in a different style manifold?

so the regular old gl-10s had 3 port too? just in a different style manifold?

 

Correct - all MPFI EA82's (including the turbo) used dual intake port heads. There are two different manifolds - the XT manifold is refered to as the "spider" manifold because of it's shape.

 

SPFI was never equipped with a turbo and shared the single intake port heads with the carb engines.

 

GD