Flexplate balancing

[Michael L.]

What is entailed in matching a flexplate from a different motor/ trans combo to my car? The knucklehead who rebuilt my motor lost the flexplate that came with the engine / trans that were together. At about 3500 rpm. I have a drive line shudder I suspect is due to the replacement flexplate I had to install.

Mike

[Roy B.]

Re: Flexplate balancing

What is entailed in matching a flexplate from a different motor/ trans combo to my car? The knucklehead who rebuilt my motor lost the flexplate that came with the engine / trans that were together. At about 3500 rpm. I have a drive line shudder I suspect is due to the replacement flexplate I had to install.

Mike

Not likely the flexplate check the drive shaft

[Dick W.]

Re: Flexplate balancing

Do you have the vibration sitting still with the engine revved up??

[Michael L.]

Re: Flexplate balancing

I just changed the balancer and pulley as well "knucklehead" also had bent my crank pulley... The vibration seems less now, most noticeable when the car is decelerating, a small shudder around 2000 -1500 RPM.

Drive shaft was made for the car (that is the other thing that dopey lost on me. Crap, I forgot about that... Another thing to add to the list why I'm ticked at him...) they balanced it when they built it.

[Roy B.]

Re: Flexplate balancing

Wear did you find this mechanic? Sorry to hear about all your trouble.

[Michael L.]

Re: Flexplate balancing

Roy, he WAS a family friend who owns a shop. His task was to have the engine and trans rebuilt so I could get it running. After two years of no results and finding he stored my '55 in his open parking lot adjacent to I-80 when I saw it posted on the internet, I went and brought it home and did it myself. Lesson learned: performance goes before friendship. A week before my oil pressure mess, this clown was at my house taking credit for rebuilding my motor...

Hey, all is well, it runs and I'm happy. When I took the motor apart, I had a chance to check it out and correct any issues. So far, so good.

[Joe L.]

Re: Flexplate balancing

Roy, he WAS a family friend who owns a shop. His task was to have the engine and trans rebuilt so I could get it running. After two years of no results and finding he stored my '55 in his open parking lot adjacent to I-80 when I saw it posted on the internet, I went and brought it home and did it myself. Lesson learned: performance goes before friendship. A week before my oil pressure mess, this clown was at my house taking credit for rebuilding my motor...

Hey, all is well, it runs and I'm happy. When I took the motor apart, I had a chance to check it out and correct any issues. So far, so good.

Michael-----


The components of the reciprocating assembly for your engine are balanced separately. If you suspect that the flex plate is out-of-balance, all you need to do is remove it and have it checked/re-balanced by a competent engine balance shop. Even if I was installing a new flexplate, I would have it checked for proper balance.