Intro to a port job

I missed the last 2 posts.

Yes, I do a before flow test... though it's very predictable..;)

The valves are sunk and that is killing low lift flow because there is a pocket around the valve.... .100 lift is shrouded by the chamber .060 deep from the sunk valve job , if they just did a top chamber side cut that would help BIG TIME. In this scenario .100 becomes. 040 if that.

At .100 lift the valve is shrouded so bad the pressure was too high.

Cfm as sent to me...

.100 35
.200 90.5
.300 145.9
.400 187.7
.500 207