mr0pistons

I want to buy an engine core to rebuild and port for my car. I don't know what the best internals to use would be. It is going to be NA. Could I use a T2 core/parts?

Dave

Alex-7

S5 internals are best, '89 and up. Dont use T2 rotors, they have lower compression.

Wankel7

S5 NA rotors, TII intermediat iron would be a good start.

James

mr0pistons

TII intermediate iron? what does the intermediate mean?

Alex-7

The one between the rotor housings where the intake ports are. The turbo motors are four ports and the NA motors are six ports. If you use the turbo intermediate irons you can make a NA four port motor which many think is better because you can do a bigger street port on a four port motor.

Wankel7

It is the center iron plate between the rotor housings.

James

mr0pistons

I see, what about the other irons? Should I just use NA irons?

banzaitoyota

new is best

mr0pistons

Could I use a T2 core with NA rotors?

I Hate Ricers

Yep.