This car has had a set of Cobra 1.7RR on it for several years now, over 2 years of that I have owned it. I've had them on and off a few different times for various reasons, one being an engine rebuild. They have always been run with a TFS Stage 1 cam, giving a total lift of .530 and .541. I have Comp Cam double springs set up for this combo, which were done with the engine rebuild.
I'm currently swapping in an Anderson N41 camshaft and reusing my 1.7's. I went to reinstall and noticed that I had two pedestals broken in half. They split right down the middle where the rocker rides in the "saddle", as I call it. Both these pedestals were located on different cylinders, although I don't know which ones they came off of. I went to reinstall the others, and split one more down the middle while torqueing to 20lbs. I stopped at this point.
I googled searched the issue and found several people with the same problems over the years. A few claimed that Ford had a recall on the pedestals for this reason. Many just ordered replacements and went on. I never found a post where the replacements broke, so I'm hoping that it was just a manufacturing flaw and the replacements will be okay.
That said, I bought a replacement set from Summit. They were only $12. Anyone else experienced this? Did you just replace and move forward? Also, one of the rockers has got a good bite on the underside, next to the roller, where you can see that the aluminum body rode on the valve tip. All valves tips look good though. I think the rocker is fine, it just galled up the aluminum.
If it helps, I run rocker channels and a .030" shim. When torqued, I can barely rotate the intake pushrod and the exhaust pushrod rotates fairly easily. The new cam should check in at .544/.544. I turned the motor over a few times with only the good rockers in place. It looks like I will have no problems with coil bind. Also, I run SRS pistons with tons of valve clearance.
Thanks in advance!
Joe
I'm currently swapping in an Anderson N41 camshaft and reusing my 1.7's. I went to reinstall and noticed that I had two pedestals broken in half. They split right down the middle where the rocker rides in the "saddle", as I call it. Both these pedestals were located on different cylinders, although I don't know which ones they came off of. I went to reinstall the others, and split one more down the middle while torqueing to 20lbs. I stopped at this point.
I googled searched the issue and found several people with the same problems over the years. A few claimed that Ford had a recall on the pedestals for this reason. Many just ordered replacements and went on. I never found a post where the replacements broke, so I'm hoping that it was just a manufacturing flaw and the replacements will be okay.
That said, I bought a replacement set from Summit. They were only $12. Anyone else experienced this? Did you just replace and move forward? Also, one of the rockers has got a good bite on the underside, next to the roller, where you can see that the aluminum body rode on the valve tip. All valves tips look good though. I think the rocker is fine, it just galled up the aluminum.
If it helps, I run rocker channels and a .030" shim. When torqued, I can barely rotate the intake pushrod and the exhaust pushrod rotates fairly easily. The new cam should check in at .544/.544. I turned the motor over a few times with only the good rockers in place. It looks like I will have no problems with coil bind. Also, I run SRS pistons with tons of valve clearance.
Thanks in advance!
Joe
