The Ford Barn

Russ/40 · 09-12-2020, 01:08 AM

I have a V8 engine that just will not run correctly. I have rebuilt a few flatheads and never had a problem like this. Engine runs like the cam is way out of time. It does not sound like the typical flathead when cranking. No speed parts involved. 41 block with 8BA rotating assembly 3 3/16 bore.

When the cam and crank gear markings are matched, is number one supposed to be at TDC? Anyone run into mis-marked crank and or cam gears?

Engine, when cranking turns normal, then slows, then speeds up, then slows etc. like it is fighting an out of sync valve timeing. Runs with loud pops in exhaust with any throttle. Will idle well at low RPMs. Valve lash is 12 and 12.

Im tearing it back down. Comments on the valve timeing?

09-12-2020, 01:08 AM	#1
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Question on cam gear marks I have a V8 engine that just will not run correctly. I have rebuilt a few flatheads and never had a problem like this. Engine runs like the cam is way out of time. It does not sound like the typical flathead when cranking. No speed parts involved. 41 block with 8BA rotating assembly 3 3/16 bore. When the cam and crank gear markings are matched, is number one supposed to be at TDC? Anyone run into mis-marked crank and or cam gears? Engine, when cranking turns normal, then slows, then speeds up, then slows etc. like it is fighting an out of sync valve timeing. Runs with loud pops in exhaust with any throttle. Will idle well at low RPMs. Valve lash is 12 and 12. Im tearing it back down. Comments on the valve timeing?