The Ford Barn

Dick Deegan · 11-03-2013, 06:44 PM

I have a friend whose engine seems to be running at idle very poorly. The engine rolls - like the timing is too far advanced. Also, it doesn't sound like a Model A. However, the timing seems to be spot on according to the instructions from FS Ignition. This engine was rebuilt recently within the last year.

My question is - what would the engine run like if the timing gears were displaced by one tooth? I believe that the crank gear has 25 teeth and the cam gear 50. If the setup was off by one tooth that means that the valve timing would be off by 7.2 degrees. Would the engine even run?

BTW, rolling down the highway this engine has lots of power - climbs hiss well etc.

Dick

11-03-2013, 06:44 PM	#1
Dick Deegan Senior Member Join Date: May 2010 Posts: 527	Engine Timing Curiosity I have a friend whose engine seems to be running at idle very poorly. The engine rolls - like the timing is too far advanced. Also, it doesn't sound like a Model A. However, the timing seems to be spot on according to the instructions from FS Ignition. This engine was rebuilt recently within the last year. My question is - what would the engine run like if the timing gears were displaced by one tooth? I believe that the crank gear has 25 teeth and the cam gear 50. If the setup was off by one tooth that means that the valve timing would be off by 7.2 degrees. Would the engine even run? BTW, rolling down the highway this engine has lots of power - climbs hiss well etc. Dick