The Ford Barn - View Single Post - Loud Noise when car decellerates while i n first and second gears

Aarongriffey · 09-12-2020, 01:08 AM

If the noise is the crank moving back and forth the sound should change if you just hold the clutch pedal down a little keeping the throw out bearing against the pressure plate.
Some years ago a guy was installing a rebuilt engine in a ‘30 roadster and used a flywheel bolt so long that it broke piece off the rear main cap.
Since the pan was on the engine he didn’t notice the broke main.
When he drove the car the oil poured out.
So I had another cap rebabbited by guessing how the thrust would turn out.
Well it came out to .032” of back and forth play in the crank but we bolted the pan back on and they’ve been driving it ever since. About 20 years.
Still no leaks and no noise.
I would first look for a U joint problem. But it has a new one? Hmm.
Loose flywheel?

09-12-2020, 01:08 AM	#4
Aarongriffey Senior Member Join Date: Feb 2020 Location: Hayward,CA Posts: 513	Re: Loud Noise when car decellerates while i n first and second gears If the noise is the crank moving back and forth the sound should change if you just hold the clutch pedal down a little keeping the throw out bearing against the pressure plate. Some years ago a guy was installing a rebuilt engine in a ‘30 roadster and used a flywheel bolt so long that it broke piece off the rear main cap. Since the pan was on the engine he didn’t notice the broke main. When he drove the car the oil poured out. So I had another cap rebabbited by guessing how the thrust would turn out. Well it came out to .032” of back and forth play in the crank but we bolted the pan back on and they’ve been driving it ever since. About 20 years. Still no leaks and no noise. I would first look for a U joint problem. But it has a new one? Hmm. Loose flywheel?