Well it’s starting to shape up and flows over 300 cfm on my Edelbrock heads. Not totally satisfied yet so back on the porting bench for a little more work.
Was this intake tested on the head you are moving the pushrod over with offset rocker arms?
Excuse my ignorance but what is a radius on the valve job consist of? Is that the farthest exterior cut that seems to go on the outer edge of the seat and I assume goes around the outside of the valve head itself
I'm assuming that a poor valve job would affect low lift flow the most. What have you found to be the difference between a good valve job and a bad one?
Wow, I can see that once you explained the seat angles. That definitely hurts the wallet.
Could you go to a 2.10 valve to get a better seat location?
Yes it is. Overall I’m totally disappointed in the heads performance for the work involved. I love my local machine shop and they have been great to me over the years but they really dropped the ball on this one and it makes me sick to even looking at these heads. Don’t ask my why but when I dropped a brand new set of heads off to be opened up and do a valve job for 2.08 valves they did a radius on the valve job. That is like one of the biggest no no’s you can do on the intake side. I redid it by hand but I can only correct it so much. They honestly need new seats and redone but I’m not forcing the issue and I’m not spending the money to correct this right now. I’ll take another look at them today or tomorrow to see if I can remove more of the radius. The heads max out now at 322cfm so for the work involved like I said I’m disappointed. Not bad for a head that started out in the 240’s but it a road I’ll never travel again. If I buy my buddies valve seat machine and spend 1000.00 for upgrades they may get new seats but they will be going on my engine soon for the 2021 race season. View attachment 1715716985View attachment 1715716986
I would use a 50 degree seat to get rid of the radius. But that’s just me. And yes, NEVER a radius on the intake seat. Ever.
My unsolicited.02 is.......
By the looks of it, there is essentially no top cut with the current seat profile.
There is plenty of meat left to be able to cut a multi angle seat onto the seat ring.
Would that flow more?
Only one way to know for sure.
What I’m seeing is the thin shiny line is the top angle(maybe about .015-.020 wide) and dark area outside of that is the untouched top of the seat ring, which is 0 degrees.
View attachment 1715717026
These new lightweight valves should let me really rev up this engine. The flow numbers are spectacular View attachment 1715717341