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Balancers #154122
11/20/08 04:47 PM 11/20/08 04:47 PM
Joined: Dec 2006
Posts: 7
Canada
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NiceFishEh Offline OP
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NiceFishEh  Offline OP
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Posts: 7
Canada
On a 1970 340, assuming it has a steel crank, will a cast crank balancer fit on it?
Re: Balancers [Re: NiceFishEh] #154123
11/20/08 04:50 PM 11/20/08 04:50 PM

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ya it will fit. wont work, but it will fit
Re: Balancers #154124
11/20/08 05:00 PM 11/20/08 05:00 PM
Joined: Jan 2003
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JohnRR Offline
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JohnRR  Offline
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Quote:

ya it will fit. wont work, but it will fit



what he said , if you want to ruin that engine running it out of balance then throw on an external balance balancer .
Re: Balancers [Re: JohnRR] #154125
11/20/08 07:17 PM 11/20/08 07:17 PM
Joined: Aug 2004
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MARYLAND
69Cuda340S Offline
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The early 340s were internally balanced and need a neutral balance balancer. The cast crank engines were eternally balanced and the balancers, while they will physically fit, are not inter changable.
Re: Balancers [Re: 69Cuda340S] #154126
11/21/08 09:32 AM 11/21/08 09:32 AM
Joined: Dec 2006
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Canada
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NiceFishEh Offline OP
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Canada
Quote:

The early 340s were internally balanced and need a neutral balance balancer. The cast crank engines were eternally balanced and the balancers, while they will physically fit, are not inter changable.



Reason I ask... it runs as smooth as possible with no vibration. I'm trying to avoid pulling the pan to verify if in fact it does have a steel crank. My guess it does. At about 3k it has a slight hum like a clutch fan would make. I'm told that's normal on 340's???

If I do replace the balancer with the proper one, will it affect the engine since it has been worn with the external balancer for at least the 5 years I've owned the car.

Thanks
Re: Balancers [Re: NiceFishEh] #154127
11/21/08 10:44 AM 11/21/08 10:44 AM

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i wouldnt replace anything without knowing whats in there
Re: Balancers #154128
11/21/08 10:48 AM 11/21/08 10:48 AM
Joined: Jan 2003
Posts: 75,095
A Banana Republic near you.
JohnRR Offline
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JohnRR  Offline
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Posts: 75,095
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Quote:

i wouldnt replace anything without knowing whats in there




Re: Balancers [Re: JohnRR] #154129
11/21/08 11:32 AM 11/21/08 11:32 AM
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Upper Midwest
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If it ain't broke don't fix it. After 5 years Leave well enough alone.
Re: Balancers [Re: MoparforLife] #154130
11/21/08 11:44 AM 11/21/08 11:44 AM
Joined: Dec 2006
Posts: 7
Canada
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NiceFishEh Offline OP
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Canada
Quote:

If it ain't broke don't fix it. After 5 years Leave well enough alone.



Thanks guys

Think I'll just throw another log on the fire!

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