4 VALVE HEAD - ARE EQUAL FLOWS IMPORTANT??
4 VALVE HEAD - ARE EQUAL FLOWS IMPORTANT??
(OP)
In a 4 valve head arrangement; per cylinder - how important is it to balance the flows of both intake runners to each other and both exhaust runners to each other? The aplication is a NA carbureted engine. To what degree should each individual runner be balanced say on the flow bench?
The port runners are not straight in this design and one runner flows more than another. I'm looking to determine to what extent we need to go to make them match CFM's.
The port runners are not straight in this design and one runner flows more than another. I'm looking to determine to what extent we need to go to make them match CFM's.





RE: 4 VALVE HEAD - ARE EQUAL FLOWS IMPORTANT??
You have to guess what the engine designer really wanted.
Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA
RE: 4 VALVE HEAD - ARE EQUAL FLOWS IMPORTANT??
In this case, I am the engine designer. I'm looking for some feedback out there on what would be the preferred way to build these ports.
RE: 4 VALVE HEAD - ARE EQUAL FLOWS IMPORTANT??
Bring your wallet.
Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA
RE: 4 VALVE HEAD - ARE EQUAL FLOWS IMPORTANT??
These heads are extremely well developed. And, they are on street vehicles.
Will