Inliners International Forums General Discussion Blown and Injected Tearing down 25 year old 250 build.

This is why it is important for the facility that is doing the flow testing to also have the correct bore size on the fixture.

I have seen some places flow test a head that the customer has a 4" bore on his engine , but the place flow testing the cyl head has a 4.125" fixture for the bore.
This will give a higher reading & not an accurate of a person having a 4" bore.

MBHD