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-   Do It Yourself, Boating on a Budget (https://www.offshoreonly.com/forums/do-yourself-boating-budget-249/)
-   -   Which harmonic balancer? (https://www.offshoreonly.com/forums/do-yourself-boating-budget/356435-harmonic-balancer.html)

ezstriper 09-06-2018 06:38 AM
Originally Posted by abones (Post 4647230)
Has any one had issues with stock GMPD Dampners? for 5K and under use..
No...ran for years and still do..

Swamplizard 09-06-2018 07:28 AM
i run boat weekly - year round (FL) - I was leaning toward Fluid Dampers until I saw the above.... now I'm waffling. Which ones specifically for a reasonably priced damper for a basically stock 454 mag? Keep in mind these wont see 5000 rpms.

Disturbing Behavior 09-16-2018 02:13 PM
ATI hands down.

BUP 09-16-2018 04:42 PM
Originally Posted by BUP (Post 4647328)
depending on the build and balance --- 1 ATI balancers and then Power bond balancers by Dayco or vise versa. I believe dayco bought powerbond
Totally agree with the ATI like above ^^^^^^^^^ in post # 23 states.

Baja Rooster 09-17-2018 01:05 AM
On an internally balanced engine should a damper fail do you need to pull the thing apart to balance again with a new unit?

bck 09-17-2018 09:45 AM
Originally Posted by abones (Post 4647230)
Has any one had issues with stock GMPD Dampners? for 5K and under use..
The 540 ci 600 hp Volvo engines used GM dampeners. That being said, I dont know if they had issues with them.

Baja Rooster 09-20-2018 11:27 PM
I’ve alread had my 509 balanced with the flywheel and balancer. Is it possible to switch out the balancer at this point?

MILD THUNDER 09-21-2018 07:59 AM
Originally Posted by Baja Rooster (Post 4650336)
I’ve alread had my 509 balanced with the flywheel and balancer. Is it possible to switch out the balancer at this point?
I was in the same boat. I was worried about the balance issue being an external balance setup. Took my new powerbond balancers in along with my original gm balancers to the machine shop. They were within a C hair from each other. Was kind of a waste of money, but at least it made me feel better when buzzing along at 6k.

Baja Rooster 09-21-2018 11:33 AM
That’s good to know, MT. From what I’ve read on the internetz unless a machine shop modified the balancer instead of the crank to balance the assembly the units are pretty standardized.

mike tkach 09-21-2018 09:48 PM
the factory gm balancer for your 5000 rpm application is fine.what happens to them is with years of use the rubber will break down,that can be a big problem.


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