Quote Originally Posted by md85 View Post
Would a phenolic spacer be better? The intake is a dual plane but the current spacer is an open spread bore. Does that matter since the intake is a dual plane?
Thanks,
Paul
Yes, a phenolic spacer would be better, and as Don said some use a pair of them. Heat transfers through your aluminum very fast, whereas phenolic is a fibrous material that insulates. The open spread bore configuration of the spacer is not going to matter in your application.
On your stumble in 2nd & 3rd, sounds to me like a slight adjustment in your accelerator pump to increase the shot might fix it.