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Old 06-10-2010, 01:33 PM
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Harmonic balancer Advise

whats the key for chossing a good harmonic balancer? Size/Brand/Material

its for a 355cid no more than 6500rpm solid flat tappet cam motor with lets just say 600hp, external balance. let me know if you need more info on motor.

Thanks in Advance!

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Old 06-10-2010, 01:40 PM
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I have a Pioneer balancer decent price and a nice piece.
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Old 06-10-2010, 02:05 PM
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Strange that you would have a 3.48" crank that is externally balanced, but hey, whatever. 600 hp probably means a blower, which would not need a damper for the crankshaft harmonics as the vibes would be dampened by the blower belt, but hey, whatever.

Damper Doctor disassembles OEM dampers (which coincidentally, have the proper bore in the hub, unlike some of the aftermarket pieces), uses new elastomeric material and presses the inertia ring back onto the hub with trememdous hydraulic pressure while properly clocking the two pieces so you can time the motor properly with a light.
http://www.damperdoctor.com/
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Old 06-10-2010, 02:16 PM
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Quote:
Originally Posted by 65malibuSS
whats the key for chossing a good harmonic balancer? Size/Brand/Material
ATI sells a good damper. The Rattler is said to be good- I've not owed one, same w/the Fluidampr.

Quote:
its for a 355cid no more than 6500rpm solid flat tappet cam motor with lets just say 600hp, external balance. let me know if you need more info on motor.
Yes, you might say "I need more info on motor" all right. Care to elaborate on the details??
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Old 06-10-2010, 02:21 PM
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Quote:
Originally Posted by cobalt327
ATI sells a good damper. The Rattler is said to be good- I've not owed one, same w/the Fluidampr.

Yes, you might say "I need more info on motor" all right. Care to elaborate on the details??

X2 cause unless it is like Tech 1 mentioned with forced induction then a naturally assperated 350 making 600hp is none too easy. not saying it's not possible cause it is but it's rare
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Old 06-10-2010, 02:33 PM
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Quote:
Originally Posted by my87Z
X2 cause unless it is like Tech 1 mentioned with forced induction then a naturally assperated 350 making 600hp is none too easy. not saying it's not possible cause it is but it's rare
No doubt. Not even a solid roller.

A 350 w/an external balance flexplate is a common deal, the 1-piece rear main seal 350's have that, but not an externally balanced damper, so I'm wondering what's up w/that as well.
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Old 06-10-2010, 03:37 PM
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sorry Gentleman my apologies, it is INTERNALLY BLANCED! i just want something at a decent price that will handle the somewhat high revs and is small or bigger better? and what material is good?

its a N/A motor, i just wanted to throw 600hp out there haha
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Old 06-10-2010, 04:20 PM
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Quote:
Originally Posted by 65malibuSS
it is INTERNALLY BLANCED! i just want something at a decent price that will handle the somewhat high revs and is small or bigger better? and what material is good?
Short answers are larger is usually better up to a point, and steel is the material of choice most of the time.

HERE at "Damper Tech" is a primer on balancers. Read up on it and it will answer most of your questions, I believe.
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Old 06-10-2010, 04:51 PM
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hey thanks that actually did help!
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Old 06-10-2010, 05:39 PM
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PowerBond and BHJ balancers are nice sportsman level parts, street/strip and moderate race type builds. Both are elastomer type(rubber ring) balancers. Summit Racing's line of SFI approved balancers is decent also.
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