Re: Maximum Recommended MPH

Posted by Brian Burkert on September 06, 1998 at 10:07:20

In Reply to: Maximum Recommended MPH
posted by Pat Patterson on September 05, 1998 at 15:36:10

Pat,
I am no expert on Model "A's" but I have heard from many people that sustained speeds over 50-55 mph are hard on the engine.Sure, the car should and will run faster than that, but it may cause premature bearing failure.
What I am told
The weak point of a Model "A" engine is the babbit bearings and the light crankshaft.At higher speeds, the crank begins to flex and it puts extra strain on the main bearings.In other words, it pounds them out of round.
This is why Ford beefed up the lower end of the Model "B" four-cylinder.
**********
Now this information is not the product of my own analysis but I'd rather not risk the expense of finding out on my own.
I'm sure others can support or refute this theory and I'd be interested in what they have to say also.
At any speed, enjoy your car!!!!!
Brian

Follow Ups:
In the old days- Bob Carabbio September 06, 1998 at 13:20:37(1)
here, here Brian September 07, 1998 at 15:15:31(0)

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