Excuse me perhaps an ignorant question.
Just having a stripped z22se head on my bench.
On the exhaust side I noticed there are some narrow channels that fork from the exhaust ports toward the manifold. And manifold actually blocks them.
There must be some purpose for such design, otherwise I imagine wouldn't they just introduce some turbulence in the exhaust flow?
Just having a stripped z22se head on my bench.
On the exhaust side I noticed there are some narrow channels that fork from the exhaust ports toward the manifold. And manifold actually blocks them.
There must be some purpose for such design, otherwise I imagine wouldn't they just introduce some turbulence in the exhaust flow?