shaving flywheel

1930artdeco

1930artdeco

Well-known member
Hi All,

O.K. my plan is to counterweight my crank and then shave the flywheel to keep the weight the same. Now, I think the flywheel weighs in at 65lbs. (or there abouts) and it needs to be shaved down by around 20lbs. Is it worth while to shave another 5-10lbs off? Or is the extra weight shaved off not going to be beneficial?
I am not trying to shave huge amounts of weight. I just want to give her a little more oomph.

Mike
 
The stock flywheel is 62# without the starter ring. I cut the raised ring off and lighten it by 11#. I then drill it for the V8 pressure plate which is 6# lighter. This makes the assembly 17# lighter for a complete weight with a new starter ring of 72#. The flywheel is balanced to +/-2 grams (some to 0). I also do custom weights for slightly more money. If you need more info or would like to buy one already done, contact me. http://www.model-a-ford-4bangers.com/
The number is at the bottom of the page.
 
Tinker said:
What has to be done to the pressure plate on a lighten flywheel?
Click to expand...

That depends on where the weight is removed. As mentioned in an earlier post, the rim where the pressure plate (pp) mounts can be cut off. If it is the pressure plate will need to be changed to a 09A-7563 pp. If the weight is cut from the outside and/or inside diameter the stock pp can be used.
 
The crank doesn't know how much the flywheel weighs, and vice-versa. A lighter wheel will allow quicker acceleration and deceleration, thus quicker shifts and faster away from the stop sign. The V8 clutch is smoother, a diaphram clutch may be even better?
 
I am assuming you have to counter-balance the crank so that it runs smooth with the lightened flywheel?? What would happen if you ran a light weight flywheel with a crank shaft that has not been counter balanced?

Were the crank shafts not counter-balanced because it was easier and quicker to make them that way??
 
I'm running a counterbalanced crank; cut down flywheel to 35 lbs, and a diaphram pressure plate. Running this arrangement in two A's. Very satified with results.

Ron
 
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