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Old 08-31-2005, 11:22 AM
mrtimstik
 
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Constantly Loosening distributor

On my 350 SBC with gear drive cam my distributor is constantly getting loose and then retarding my timing badly. It's a MSD Billet unit with the lock down from MSD in an Edelbrock aluminum manifold. I can tell its loose in about 5 seconds of running because it sounds totally different. I tighten it with one of those bent up distributor wrenches and feel like it's plenty tight, but it loosens up after a while. Does anybody else have this problem? I think a drop of blue Loc-Tite will be the fix. Thanks.

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Old 08-31-2005, 12:56 PM
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Quote:
Originally Posted by mrtimstik
On my 350 SBC with gear drive cam my distributor is constantly getting loose and then retarding my timing badly. It's a MSD Billet unit with the lock down from MSD in an Edelbrock aluminum manifold. I can tell its loose in about 5 seconds of running because it sounds totally different. I tighten it with one of those bent up distributor wrenches and feel like it's plenty tight, but it loosens up after a while. Does anybody else have this problem? I think a drop of blue Loc-Tite will be the fix. Thanks.
when I first built my 350, I was using a Mr. Gasket chrome distributor hold down - it was a pain to tighten and I could still move the dizzy around.

I grabbed the one off of the original 305 and it holds the dizzy down much better.
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Old 08-31-2005, 01:22 PM
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Its possible that the dist is bottoming out and not letting the hold down do its job. You could try putting on a couple more gaskets and see if it helps. Or just remove the gasket and re-install and see if it sits tight on the manifold. If it doesn't, you need to move it up some.
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Old 08-31-2005, 06:16 PM
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Maybe the holddown clamp is straightened out too much and no matter how much you tighten the bolt it won't clamp down on the distributor. If that's the case try bending the clamp's prongs down a little bit. This should also help keep the bolt from coming loose.
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Old 08-31-2005, 06:50 PM
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Moroso makes a STEEL clamp like the factory clamp in chrome or gold irridated. It also has a STUD and NUT to tighten it.

It will hold a vertex magneto, so I am sure it will hold a breakerless dist.
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Old 09-02-2005, 09:01 AM
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Is your hold-down bolt to long for the alum. manifold? I ran into that problem with my performer. The threads in the alum. man. weren't cut as deep as they were in the iron man. Just add a flat washer or two, or get a shorter bolt.
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