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Old 09-04-2016, 04:26 PM   #1
rod
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Default SBC O rings on Dist?

do the O rings really work/help or was this just an MSD gimmick?
your thoughts
Thanks Rod in AZ
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Old 09-04-2016, 05:36 PM   #2
Woodfin
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Default Re: SBC O rings on Dist?

it is a reasonable question. I have never installed them but on the other hand, I expect it will not hurt anything.

Yet, I am considering all the Chevy engines running without them
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Old 09-04-2016, 09:10 PM   #3
Bob Mulry
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Default Re: SBC O rings on Dist?

Just a thought,

The stock Chevrolet blocks and distributors are cast iron with tight clearances on the OD & ID.........

MSD is aluminum and is a fits all......

The "O" rings couldn't hurt, but only help getting oil with the least amount of leakage to the lifter galley...

Just my 2 cents,
Bob
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Old 09-05-2016, 09:04 AM   #4
Tom keedle
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Default Re: SBC O rings on Dist?

Quote:
Originally Posted by Bob Mulry View Post
Just a thought,

The stock Chevrolet blocks and distributors are cast iron with tight clearances on the OD & ID.........

Bob
since when?

the 50's and early 60's yeah but after that.....aluminum and plastic (vortecs)
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Old 09-05-2016, 02:04 PM   #5
Bob Mulry
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Default Re: SBC O rings on Dist?

Quote:
Originally Posted by Tom keedle View Post
since when?

the 50's and early 60's yeah but after that.....aluminum and plastic (vortecs)
OK OK OK

Don't get all wadded up, I just had a brain fart.............

But everything else is correct......

Do it or don't do, it works either way?????????????????

Again I revert back to.........What could it hurt it could only help

Have fun,
Bob

PS:
My engine oil primer is made from an old cast iron distributor body......
But that's probably 50 years old..........
Just sayin'
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Last edited by Bob Mulry; 09-05-2016 at 02:08 PM.
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Old 09-05-2016, 08:21 PM   #6
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Default Re: SBC O rings on Dist?

I've heard that bronze distributor gears wear less quickly with a little groove in the distributor body and no O rings. That arrangement seemed to help the looks of my bronze gear.
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Old 09-06-2016, 12:06 AM   #7
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Default Re: SBC O rings on Dist?

A + Ron
Use the top one and leave the bottom one off.
I like the slot leading the gear contact slightly.
Gear gets a little oil.
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Old 09-11-2016, 04:36 PM   #8
rod
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Default Re: SBC O rings on Dist?

I have always used a slot filed in the bottom, aimed at the dist. gear. and have wondered about using the top O ring and no bottom. once again Adger the experienced one, confirms. thanks guys.
Rod in AZ
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