General engine tech -- Drag Racing to Circle Track
- Posts: 1576
- Joined: Wed Jul 09, 2014 11:50 am
- Location: Maryland
I believe mine mushroomed because the cam I had in there appears to have a chatter mark on the fuel pump lobe. The new cam does not have that mark, I should be fine replacing with another bronze tipped lightweight rod. I have never had trouble before, just with this cam.