Found a problem with Pro Comp heads
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Race Director
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
I snapped a few shots while the engine was being built. They looked pretty nice and I haven't had any problems over the last two years...
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
Rocker Alignment/Geometry
and the valve tips. It's something that will come back to "haunt" you in short order or in the near future.
You really want the roller tip on the rocker arm to be pretty much centered over the valve when looking at the assembly from the side. This misalignment can and will lead to premature wear on the guides and all the components on top. Like I said, this is based on what appears in the photo. I'm not certain the pushrods are in place in that particular photo, but I assume they're installed!
(Add) Just looking back at "Black Sharks" photo and it also appears he's got very similar issues with the alignment, again, it's sometimes difficult to base input on the photos.
Thanks, Gary in N.Y.
P.S. Almost all the SB aluminum casting's we build around, no matter the brands, require using some offset intake rockers AND some adjustable guide plates. We find the Crane's rockers along with the Isky plates tends to make the overall final assembly much easier! Moreso on castings with 200 cc runners and larger.
Last edited by GOSFAST; Jan 31, 2007 at 08:47 AM.
Race Director
Joined: Nov 1999
Posts: 10,643
Likes: 8
From: Foxfield CO 1970 Convertible
They look like it in that photo don't they. I have others that show them all lined up, so maybe I was there between times when he was fiddling around with them during installation. Thanks...
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
Hi Z-man, it's hard to diagnose potential issues from photo's but it appears there's some radical misalignment between the those rocker's
and the valve tips. It's something that will come back to "haunt" you in short order or in the near future.
You really want the roller tip on the rocker arm to be pretty much centered over the valve when looking at the assembly from the side. This misalignment can and will lead to premature wear on the guides and all the components on top. Like I said, this is based on what appears in the photo. I'm not certain the pushrods are in place in that particular photo, but I assume they're installed!
(Add) Just looking back at "Black Sharks" photo and it also appears he's got very similar issues with the alignment, again, it's sometimes difficult to base input on the photos.
and the valve tips. It's something that will come back to "haunt" you in short order or in the near future.
You really want the roller tip on the rocker arm to be pretty much centered over the valve when looking at the assembly from the side. This misalignment can and will lead to premature wear on the guides and all the components on top. Like I said, this is based on what appears in the photo. I'm not certain the pushrods are in place in that particular photo, but I assume they're installed!
(Add) Just looking back at "Black Sharks" photo and it also appears he's got very similar issues with the alignment, again, it's sometimes difficult to base input on the photos.
