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crashbash
david bash
st. charles
(215 posts)

Registered:
01/28/2008 10:53AM

Main British Car:
1979 MGB Rdst V8 project, 1968 MGC GT, 1969 MGB Rd olds 215

harmonic balancer question
Posted by: crashbash
Date: August 16, 2011 10:04AM

What kind of harmonic balancer's are all of you using on the buick 300 crank in 215 blocks? I'm sure there are a few options and I need help deciding. thanks

Where is all the trash coming from on the forum?


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: harmonic balancer question
Posted by: roverman
Date: August 16, 2011 04:42PM

David and clan, the "300" is externally balanced, front/back. Probably "less" eccentric weight than 340/350. You "might" be able to reduce eccentric weight on a new 350 dampener. Flexplate also had eccentric weight. I don't know the grams/inches. Perhaps D&D or others here ? Good Luck. roverman.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: harmonic balancer question
Posted by: BlownMGB-V8
Date: August 16, 2011 04:46PM

I'd suggest you use the 300 damper and flywheel. That will get you closer than anything else and then have the works balanced. Rebuilt dampers are available.

JB
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crashbash
david bash
st. charles
(215 posts)

Registered:
01/28/2008 10:53AM

Main British Car:
1979 MGB Rdst V8 project, 1968 MGC GT, 1969 MGB Rd olds 215

Re: harmonic balancer question
Posted by: crashbash
Date: August 16, 2011 05:00PM

thanks for input, I have an aluminum flywheel and am going for internal balance, I have a tr8, a 215 olds and a 215 buick that all need rebuild. I like the tr8 the best but pulleys don't line up. Is there an aftermarket hi po internal bal race approved balancer out there? damper doctors get almost $300.00 - core, anyways!


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6470 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: harmonic balancer question
Posted by: BlownMGB-V8
Date: August 17, 2011 12:20PM

You might see if there's a zero balance damper available for the Buick V6. That should also fit. I used a fluid damper for a Jeep motor but had to turn an adapter to match the Buick damper hub. Many aftermarket dampers are 3 piece. Since the BOPRs are internal any of those should be usable. Worst case, you might have to mill the balance weight off so the one you use can be zero balanced.

JB


Roverized
Jason Spittel

(10 posts)

Registered:
07/01/2011 02:17AM

Main British Car:
Re: harmonic balancer question
Posted by: Roverized
Date: August 21, 2011 08:25AM

Hi everyone,
I spoke to TA Performance a couple of months back about this and was told a 350 Buick balancer works for the 300 crank.You should double check just to make sure though.
Regards
Jason


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