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flywheel and bolt sealer
Posted by: 68Hollywood ()
Date: February 20, 2020 04:24PM

Hello all,
I replaced the rear main seal on my 95hp FC engine. The 61 shop manual calls for the use of a sealer between the flywheel and crank, and on the bolts as well.

What type of sealer should I use?

Re: flywheel and bolt sealer
Posted by: MattNall ()
Date: February 20, 2020 05:05PM

Loctite Thread sealer

MODERATOR
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Re: flywheel and bolt sealer
Posted by: Grandpacorvair ()
Date: February 20, 2020 05:16PM

Sealer between the flywheel and the crank?

Kerry Borgne
Birmingham, Michigan

1963 Spyder Convertible

Re: flywheel and bolt sealer
Posted by: 68Hollywood ()
Date: February 20, 2020 05:32PM

Thanks Matt!

That is what it says in the 1961 manual,Engine section 6A-49confused smiley

Re: flywheel and bolt sealer
Posted by: 63turbo ()
Date: February 20, 2020 05:41PM

Grandpacorvair Wrote:
-------------------------------------------------------
> Sealer between the flywheel and the crank?

YES!! This is to stop oil from possibly leaking through the woodruff key on the crank hub, and through the bolt holes. I used locktite blue in this area.

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
first test start on EFI here:[www.youtube.com]
first official EFI boost test here:[www.youtube.com]
My new fan! [corvaircenter.com]
engine less 62 Spyder
Canadian 64 Monza Parts car



Re: flywheel and bolt sealer
Posted by: JimBrandberg ()
Date: February 21, 2020 04:53AM

I also use blue Loctite on the bolts because I don't want them to loosen.

Jim Brandberg
Isanti, MN
CorvairRepair.com



Re: flywheel and bolt sealer
Posted by: vairmech ()
Date: February 21, 2020 05:28AM

63turbo Wrote:
-------------------------------------------------------
> Grandpacorvair Wrote:
> -------------------------------------------------------
> > Sealer between the flywheel and the crank?
>
> YES!! This is to stop oil from possibly leaking through the woodruff key on the crank hub, and through the bolt holes. I used locktite blue in this area.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Actually NO. Only the bolt threads need to be sealed. You can use many different things to seal the threads as long as it is petroleum resistant.

Why the flywheel bolt threads? Because they are not blind holes and are drilled and tapped all the way through the hub and into the crankcase interior where there is lots of oil and that oil will leak past the flywheel bolt threads and make a mess.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

Re: flywheel and bolt sealer
Posted by: steve c goodman ()
Date: February 21, 2020 07:22AM

It is ok (INMHO) to place a drop of Permatex etc on the woodruff key at the end of the rank hub BUT don't use gasket sealer on the entire face of the hub to flywheel.

The flywheel will be stuck in place after time/miles go by and it may need removal for something else. Prying on the flywheel will warp the center spring plate and the flywheel is unusable unless straightened.

David L (Dale Manuf) had a fixture to hold flywheels while he straightened the center plate because so many were damaged during removal by prying.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC/V8 Registry

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