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Author Topic:   balancers
Dirt Newbie

Total posts: 1
posted February 09, 2005 09:29 PM  
Hey guys im new hear and just building up a car for this season, but im running in a street stock class that is basically a stock 350 motor class, from what ive figured i will turn 6000-6300 RPM, but my question is, would you really recomend a nice aftermarket harmonic balancer? I have a stock one, but ive heard a few people saying that its a must have type of thing, i know it would probably be better but is it really a necesity? any help would be a blessing!

Dirt Full Roller

Total posts: 60
posted February 09, 2005 10:46 PM  
it's not something you absolutely HAVE to have, but i bought an aftermarket one last yeah for my 350, i believe it was a powerforce, and it weighed about a 3rd of what the stock one did. less rotating weight is better, and also if you are using a stock one, make sure the rubber in the middle is good. alot of times the outside piece will get offset with the inside and your timing will not be right. most aftermarket ones are solid.

Dirt Freak

Total posts: 402
posted February 10, 2005 08:49 AM  
Engineering wise, The heavyest balancer you can get does the best job of absorbing frequencies produced by crank oscillations. But I don't have dyno info to back that statement up.

Dirt Maniac

Total posts: 120
posted February 10, 2005 09:59 AM  
We were running the light weight pioneer balancers (5.5 pounds)and broke two cranks. I'm not blaming it completely on the balancer because we found other problems with the cranks. But in the interest of solving the problem from different angles, we now run an ATI Superdamper. Expensive and a little heavy, but well worth it I think.

Dirt Maniac

Total posts: 170
posted February 10, 2005 03:08 PM  
we run the old old style that is very very small.

Dirt Freak

Total posts: 279
posted February 10, 2005 03:21 PM  
What do you guys think of a 6 1/4" Fluidampr for 7200 rpm? I just picked one up cheap and was wondering if it would negatively affect my internal balance. The Fluidampr itself is dynamically balanced and tested to 8000 I think I read somewhere. Would I be able to just switch balancers safely? One more thing, the existing balancer wasn't worked on at all to achieve the balance; all done on the crank.

Sorry to have jumped in on your question grim.

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