Vibration After New Motor

[larrys40]

Have installled many engines and do mounts routinely,Taking in many of the posts there are some good suggestions. I agree it is important to ensure the rear mount rubbers are important to be installed properly, the rubber bosses within he frame holes and the sleeve then installed and the bolts snug but not overly tight.

The front yoke is important that it has the flat spring and anti squeak leather and correct springs top and bottom. Some of the repro springs out there are too stiff. The current cad plated ones seem to do well.

I have had a couple where I loosened the rear mount bolts a little at the flywheel housing, loosened the front mount and drive the car a little and let the engine settle where it wants to and it seemed to help. I learned this one from Rich Falucca himself, and will say that it did seem to help. Inherently the 4 cylinder is an imbalanced engine. Don’t expect them to be perfect. And as I say to folks who have more then one A and want them all the same I tell them they are like our kids... as much as you want them to never act up and be the same they they are different.
Hope that helped a little
Larry shepard

 

[Garagekulture13]

Update

I got the front yoke ground to clear the crank pulley. The car actually seems to have gained some power but the vibration is still there. Now mind you I only have to Model As to judge by. A coupe which was completely stock motor and my current Tudor with the touring motor. With my hands on the steering wheel I can feel vibration but when I touch the dash I can't feel the same vibration I do in the wheel.

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[Dave in MN]

The pulley rubbing on the mount would cause a bit of noise and a minor amount of felt vibration. Clearance the yoke to the pulley and try it again.
Some of the replacement pulleys available some time back did interfere with some of the later yokes. Whenever I ran into this, I removed a bit of material from the yoke.

You may need to lift the front of the motor to get the yoke out to create clearance by removing material from the yoke. You should remove one bolt from each rear motor mount before raising the front of the motor. Lifting the front of the motor with four bolts in will place extreme stress on the flywheel housing. You risk cracking it if you don't remove a bolt from each side.
Good Day!