manifold advice?

[HiImBrian]

^Yea I still think I'ma stick with the evoIII or a 2g mani and have it port matched to my head.

[Super Bleeder!!]

You dont port match exhaust manifolds. Read up a bit on the subject.

[HiImBrian]

I'm not talking about porting all the runners the same length. I know that the middle two are usually a little larger if I remember right. I'm talking about matching the ports/runners with the head.

[Super Bleeder!!]

Yes, and i am telling you that is a bad idea!

[HiImBrian]

^Ok I'll continue looking... There are a ton of threads about porting the head, but not many talk about matching or not matching the head to the exhaust mani. They mention the intake mani but not the exhaust side

if you know why it's bad lmk. I'm lookin to learn here

[JET]

Yes, and i am telling you that is a bad idea!

I'll bite, why is it a bad idea?

[Super Bleeder!!]

The lip acts as a reversion dam.

[JET]

I think you mean an anti-reversion dam. I guess I read his post a little wrong. The exhaust manifold should be gasket matched, it isn't possible to port match it, since it is already bigger than the head outlet.

[Super Bleeder!!]

The "anti" is implied. It is a dam after all.

Why dont they call flak jackets anti-flak jackets? ;)

[HiImBrian]

Ok so the exhaust mani is larger than the head because that way exhaust hits the step up or lip or w/e after it enters the mani and keeps from creeping back into the head? makes sence