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Original Message
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| Forget the hatchet. |
| By Dave Shoe - 08/05/2001 2:54:44 AM; IP 216.243.158.26 |
The Arias pistons probably weigh a little less than stock pistons. Still, a hatchet would help simplify the balance job.
Since you've clearly got a couple bucks tied into this build, I'd spring for the Mallory metal (which incidentally weighs roughly twice as much as iron) instead of the hatchet to reduce the stress on the snout. The hatchet is just a bob-weight hanging way out on the crank. It's best to consolidate the counterweights to the inside of the shortblock, however the flywheel counterweight doesn't try to flex the crank as much as the hatchet because it's not offset as far from the rear main bearing.
Since you didn't mention a flywheel, I assume you're gonna buy a steel one. Just buy a 390 "zero balance" flywheel and drill it to fully offset-balance the rear half of the motor. Stamp it near the part number so you remember it's not a standard balance flywheel. This way you'll only have to add the tungsten alloy to the front half of the engine.
JMO,
Shoe. |
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