And do any flow testing going from an 11/32 valve to a 5/16 valve. Since I’m thinking my heads are way past due for valve guides and valves it may be time for a change.
Anyone ever taken a nice set of ported Edelbrock heads.
- Thread starter pittsburghracer
- Start date
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No, but IIRC 3/8 to 11/32 is worth about 5 cfm at 0.500-0.600.
Having a seat and guide machine makes a guy think about things like that!
Bobzilla
Well-Known Member
Is the outside diameter of the bronze guide itself the same between an 11/32” stem and an 8mm stem, so the only difference is the valve shape itself?
Would it be reasonable to wonder if one 8mm valve could be temporarily inserted with clay on both ends to keep it centered at a specific lift value for the airflow test? Like a mock-up test.
Would it be reasonable to wonder if one 8mm valve could be temporarily inserted with clay on both ends to keep it centered at a specific lift value for the airflow test? Like a mock-up test.
PRH
Well-Known Member
I just made a sleeve that slides in the 11/32 guide to locate the 5/16 valve.
If it was just for flow testing you could take an 11/32 valve and cut it down to 5/16 on a lathe to flow test one.
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