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Sloppy fit distributor in Intake

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Sloppy fit distributor in Intake

Posted: 12/7/16 7:38pmMessage 1 of 5
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Scotch Plains, NJ - USA
Joined: 1/11/2006
Posts: 247
Vette(s): 1981 Corvette Coupe, Stock, Black on Black, 4 Spd
I'm installing a new distributor in a stock 350 and when seated, the distributor has a sloppy fit.
I measured the intake opening and the old and new distributor boss where it fits into the manifold.
Intake opening: 1.345"
Old distributor boss: 1.247"
New distributor boss: 1.254"

Not too concerned but is this loose fit normal ?

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Re: Sloppy fit distributor in Intake

Posted: 12/7/16 8:22pmMessage 2 of 5
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
If I'm seeing your measurements correctly, t appears the "new" dist has a slightly larger diameter than the "old" one. As long as the o-ring fits snug against the intake, you're good to go. The clamp holds the dist down square against the intake. Thumbs Up

Joel Adams
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Re: Sloppy fit distributor in Intake

Posted: 12/8/16 3:29amMessage 3 of 5
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Scotch Plains, NJ - USA
Joined: 1/11/2006
Posts: 247
Vette(s): 1981 Corvette Coupe, Stock, Black on Black, 4 Spd
O.K., thank you. I thought that an O-ring should be there but my original didn't have one or the new didn't either. I see no groove on the orig. and new distributors. I looked at the Parts Manual and Assembly Manual also. Did not find an O-ring referenced. Are there any resources for the O-ring for an 1981-350?

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Re: Sloppy fit distributor in Intake

Posted: 12/8/16 5:26amMessage 4 of 5
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
 Embarrassed  My bad....no o-ring on the dist....just a thin gasket at the base. Regardless, the fit between the dist and intake isn't all that tight...

Joel Adams
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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Re: Sloppy fit distributor in Intake

Posted: 12/8/16 5:44amMessage 5 of 5
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Scotch Plains, NJ - USA
Joined: 1/11/2006
Posts: 247
Vette(s): 1981 Corvette Coupe, Stock, Black on Black, 4 Spd
Not to worry, it's O.K., it's actually a great idea. I remember, so long, long ago internal combustion aircraft engine magnetos had them. Thanks

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