Flexplate weight
Thread Starter
Racer
Joined: Mar 2009
Posts: 331
Likes: 1
From: Brooklin Ontario
Thats the part I don't get, when you buy a new flexplate, how do they know where to put the weight? Would they not need to spin my motor to figure that out, or is the weight just to balance the plate itself? If the latter is true, then why is the 427 plate not balanced?
Melting Slicks
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
The imbalance weight, when welded to the flexplate during manufacture, is located by reference to the seventh hole.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
On an externally balanced motor the flex plate or flywheel on one end and the damper on the other are either drilled or weight added to balance the motor as a complete unit.
If you replace any one of these components you will need to have it made the same (weight balance) as the part being removed.
Internally balanced motor use neutral weight dampers and flex plates or flywheels
If you replace any one of these components you will need to have it made the same (weight balance) as the part being removed.
Internally balanced motor use neutral weight dampers and flex plates or flywheels
Thread Starter
Racer
Joined: Mar 2009
Posts: 331
Likes: 1
From: Brooklin Ontario
On an externally balanced motor the flex plate or flywheel on one end and the damper on the other are either drilled or weight added to balance the motor as a complete unit.
If you replace any one of these components you will need to have it made the same (weight balance) as the part being removed.
Internally balanced motor use neutral weight dampers and flex plates or flywheels
If you replace any one of these components you will need to have it made the same (weight balance) as the part being removed.
Internally balanced motor use neutral weight dampers and flex plates or flywheels
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
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Thread Starter
Racer
Joined: Mar 2009
Posts: 331
Likes: 1
From: Brooklin Ontario
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
AvRog, I would have a quality shop help you in making something close to what the original was.
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
I've put several standard balance flex-plates on stock 454s and they did fine. I'm sure a better balance could be achieved by an engine shop but most don't want to pay what it would cost.
