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Tenaci Flywheel balance

amishmafia00

Member
Joined
Sep 12, 2005
Location
Central PA
I bought a Tenaci flywheel for my 16V redblock from speedingparts. the site says balanced and I saw drill marks where they had removed some material. I took it to the machine shop with everything else to get it ballanced together anyway. The machine shop called and said that the flywheel is off by 22oz. It sounds like they spun just the flywheel. Are the B230 Cranks externally balanced that the flywheel would be off this much after being "balanced"?
 
No, Redblocks run internal balance. Your pressure plate should be factory balanced separately also.
 
22 ounces sounds like a HUGE AMOUNT. I can't even imagine how it could be that far off even on the most casually manufactured parts.
 
So I'd suspect some sort of communication issue, or a testing issue.

But to agree with Harlard's first response, all three items (ccrank, flywheel, pressure plate) should be separately balanced, there are no 'known imbalances' that they would be designed to counteract in each other. Although a normal shop can't really independently balance a pressure plate, so it's entirely understandable that they'd mark (to preserve orientation) and balance those as a unit.

But even if it was 22 grams, I'd have a hard time imagining they found something that far off.
 
I'm with everyone else. 22g is bad, 22oz is very much in defective manufacturing and/or measurement territory.
 
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He definitely told me 22g. That's my bad, sorry to get everyone excited. He said that was pretty far off and he might expect to see a 2g imbalance. I asked him if it was heavy 180 degrees off from where they drilled to remove material and he said it wasn't quite 180 off.
 
He definitely told me 22g. That's my bad, sorry to get everyone excited. He said that was pretty far off and he might expect to see a 2g imbalance. I asked him if it was heavy 180 degrees off from where they drilled to remove material and he said it wasn't quite 180 off.

See if they ran the flywheel again, so make sure it was mounted properly.... then let Tenaci know that their balancing work might be off. These things unfortunately happen when making parts.
 
When i tried balancing mine they found it off as well. I don't remember how much it was, but they definitely found something because i specifically mentioned that it came balanced. The machine shop i took the parts to balanced the crank first alone and then the rest of the parts.
 
I had my JohnV billet flywheel and Spec clutch balanced together, and IIRC that was only off a gram or two. Probably wouldn't have relaly been noticeable without balancing it.

22 grams and you're going to have a soothing back massage feature going on.
 
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