I am having huge problems with the Chevy engine in my GT40 after a rebuild. Everytime its started the engine runs fine for a few minutes and then it either bends a pushrod or pushes it right through the rocker arm!
My friend John, who did the rebuild, has set the tappets up according to the manual i.e. on each cylinder find where both valves are closed, wind the adjusting nut down till there is no play (can't turn the pushrod) and then give it another three quarters of a turn.
We have tried loosening things off a bit but the same thing keeps happening. One suggestion is a new set of hydraulic lifters which I will try next week but does anyone have any other ideas ? (Apart from get a Ford...)
It's all very frustrating as the car is ready to go and when the engine does run, it sounds superb with great oil pressure.
My friend John, who did the rebuild, has set the tappets up according to the manual i.e. on each cylinder find where both valves are closed, wind the adjusting nut down till there is no play (can't turn the pushrod) and then give it another three quarters of a turn.
We have tried loosening things off a bit but the same thing keeps happening. One suggestion is a new set of hydraulic lifters which I will try next week but does anyone have any other ideas ? (Apart from get a Ford...)
It's all very frustrating as the car is ready to go and when the engine does run, it sounds superb with great oil pressure.