63 Breather Grommet
LICS is selling a metal cup and flat grommet for the early 63 crankcase breather hole behind the intake manifold. TIM&JG just mentions a grommet, no distinction between 63 and 64; I suspect what I know as the big rubber grommet. Is this LICS part for real? If so was the metal cup installed before engine paint? Thanks. Gerry
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Re: 63 Breather Grommet
I think you should ask IS the JM for real. LICS goes way out of their way to make a part that IS correct, un like some others. Phil 8063 -
Re: 63 Breather Grommet
What does the assembly sequence look like for this? That may tell us whether it is painted or not. Anyone have a picture/drawing. I know I'm not familiar with there being a "cup", but then I've never had my 63 engine apart that far.
Stu FoxComment
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Re: 63 Breather Grommet
Looking further. The AIM Sect 6 Sheet B1.00 is dated 10 May 63 ..... same date cited by LICS as the conversion.
AIM shows removal of a 3715628 grommet and 3727693 retainer; replaced with a 3831671 (the big typical) grommet. Since covered in the assembly manual then I would believe this retainer was line installed and thus not painted on the engine at Flint.
With all the 63s on this forum I would hope some member could confirm from his early original car.
GerryComment
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Re: 63 Breather Grommet
My 63, built May 14th, 1963 had the metal cup and small rubber bushing. I havent gotten around to buy the Long Island part to see if it is good, but I would assume it is. Anything earlier than my car would also need the metal cup / small bushing.
I cant comment on if its supposed to be painted or not, my engine had been touched up before I got to it.
Long Islands drawing of the part looks correct.
BoyanComment
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Re: 63 Breather Grommet
Gerald, My 63 engine has a Feb block with the sleeve and grommet. I don't believe the sleeve was painted but I am not sure. Mine is just bare on my showcar. (LWC) The grommet has the following info on it. GM. Then opposite GM it has JR 52. The JR is like one letter. Hard to explain. You seldom see a restored May or earlier 63 with this sleeve and grommet.
A correct NOS part is extremelly rare.
The OD of the original sleeve is about .260
The OD of the repro is .250
So if you are going to use it be careful as you might have to expoxy it in.Comment
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Re: 63 Breather Grommet
John,
I did buy the grommet with the metal cup for my Jan 63 car. The .010 difference makes it slide in way to deep into the hole where its supposed to stay flush with the block. I'm going to put it in with epoxy or kwik weld just to hold it in place permanently and stay flush with the block.
JerryComment
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Re: 63 Breather Grommet
Thread is 12 years old.....Comment
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Re: 63 Breather Grommet
Still relevantComment
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Re: 63 Breather Grommet
Jerry my car had the cap with the smaller grommet when the machine shop did my block they removed it and tossed it in the trash, I just used the bigger grommet. I don’t know if I would use epoxy to hold the cap in place, a lot of heating and cooling cylce’s. My car has been through (3) Flite judging events no one said a thing.New England chapter member, 63 Convert. 327/340- Chapter/Regional/national Top Flight, 72 coupe- chapter and regional Top Flight.Comment
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Re: 63 Breather Grommet
The sleeve and bakelite grommet on the '63's was in most all of the Flint engines in old days. I don't know if it was in the Tonawanda blocks or not.
A NOS one has/had a grommet that was hard as rock. I assume it was rubber was new. My engine builder had a tool to remove the sleeve without ruining it so it could be used again.Comment
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Re: 63 Breather Grommet
Thanks Ed. I may go the route that you took. Hope all is wellComment
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Re: 63 Breather Grommet
It’s my fault that Richard had an issue with the sleeve and grommet assembly. Been holding this tidbit back from you. I had a NOS assembly but didn’t give it to him to copy.
He did a decent job on his part. Just a tad loose which is quite easy to handle. JohnLast edited by John D.; November 13, 2020, 07:59 AM.Comment
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