sherman lifter help

[Sean Marconette]

Originally Posted by Bobby Fazio

Made 4 really good passes with the mustang 5.0 and after the fourth pass I heard a noise going through the finish line, sounded like a quick rev limiter bounce (but I had no rev limiter set that low) going through at 6500. Was making a bad noise driving up return road, I pulled the valve covers and noticed 5 roller rocker adjustment nuts had backed off almost completely. Tightened them back down but the car didn't run anything close to the previous 4 runs. Did I lose a lifter? Compression test passes and didn't see anything wrong with springs or pushrods when I pulled them out. Rockers weren't damaged, just loose.

Bobby,

I had something similar happen at the last race last year. I run tool steel lifters so no puck issues. But I thought I lost a cam lobe. I verified lobe lift and all was fine. What I did find was my OEM replacement distributor reluctor wheel had loosened up on the roll pin that secures it to the shaft. It had slop in it and was playing heck with the timing. Crappy Chinese material on the reluctor casting.

If adjusters were found loose, there may be something else to be looking at. Just some thoughts. Good luck

Sean