W2 head porting observations help needed!
My suggestion would be to buy a few PST test plates for the flow bench.
They will at least let you know where your bench is in relation to other shops.
I don’t have much W2 experience at all, but on one of the ones I had here I noticed there was quite a bit of bias in the intake bowls, which helped two, and hurt the other two.
My recollection is that I’ve noticed they all had that same bias ootb to some degree.
I don’t think I’ve ever done any work on the real early ones(that look like stock heads on the exhaust side of the head).
What cylinder are you testing?
On the ones I was working with, the #1/8 intake port was the best ootb, and was noticeably better than #3/6, which clearly had the bias going the wrong way.
As for the round floor....... I used to see that talked about in magazines/forums...... it’s never worked for me on anything.
W2’s work better for me when the floor appears basically flat(very slight convex as you approach the apex), as viewed from the manifold side.
The SSR on those heads can be pretty fussy.
I wouldn’t expect that really round floor/bowl in the older head to work as is.
The bias is going the right way in the ports in the pics, so you’re good there.
This? No good imo......
My suggestion would be to buy a few PST test plates for the flow bench.
They will at least let you know where your bench is in relation to other shops.
I don’t have much W2 experience at all, but on one of the ones I had here I noticed there was quite a bit of bias in the intake bowls, which helped two, and hurt the other two.
My recollection is that I’ve noticed they all had that same bias ootb to some degree.
I don’t think I’ve ever done any work on the real early ones(that look like stock heads on the exhaust side of the head).
What cylinder are you testing?
On the ones I was working with, the #1/8 intake port was the best ootb, and was noticeably better than #3/6, which clearly had the bias going the wrong way.
As for the round floor....... I used to see that talked about in magazines/forums...... it’s never worked for me on anything.
W2’s work better for me when the floor appears basically flat(very slight convex as you approach the apex), as viewed from the manifold side.
The SSR on those heads can be pretty fussy.
I wouldn’t expect that really round floor/bowl in the older head to work as is.
The bias is going the right way in the ports in the pics, so you’re good there.
This? No good imo......
