Topic: Firestone Crankcase sealer – Page 2 – Antique Outboard Motor Club,Inc

This topic has 17 replies, 8 voices, and was last updated 9 years, 6 months ago by Mumbles.

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May 11, 2015 at 2:03 pm #15709
jeff-register
Participant
US Member - 2 Years
I agree Tubs, displacement is the magic word of the day. Yamabond is my choice too!
May 11, 2015 at 4:20 pm #15712
Mumbles
Participant
Permatex Anaerobic Flange Sealant #51531 is the only product I use now. It’d readily available at my auto supply and saves a long drive to the dealer to find they don’t have what I want. 😀
May 11, 2015 at 4:52 pm #15714
thumper
Participant
What was the reason for opening up the case? I am following your progress as best I can since I sent the manuals
May 11, 2015 at 9:29 pm #15729
Buccaneer
Participant
US Member
Thumper, Biggest reason for opening the case is I like to "tinker" and
see what makes them tic. Also decided it would be a real easy way
to remove the crankcase seals. I replaced the needle bearings as
long as I was in there. Thanks again for the manuals….. they’ve been
very valuable!
Buccaneer

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May 11, 2015 at 9:31 pm #15730
Buccaneer
Participant
US Member
Mumbles, I’ll read up on the Permatex Anaerobic Flange Sealant #51531.
Thanks for the tip!

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May 11, 2015 at 11:04 pm #15735
legendre
Participant
@Mumbles

I’ve never used that anaerobic flange sealant, I might have to give it a look. I see you’re using a prep with it, I’ll assume it’s the same as the Loctite primer – that is, it will cause the sealer to set-up whether or not the surfaces will catalyze the reaction?

What’s the consistency of the product? Thin or thick liquid? Paste? Like RTV or?

(And that’s something I need to learn more about.. apparently, some metals / platings don’t give up enough ions to catalyze the anaerobic curing process, at least in the case of Loctite.. or so I’ve been told. Can’t attest to the truth of that, yet.)
May 11, 2015 at 11:22 pm #15739
Buccaneer
Participant
US Member
The Permatex Anaerobic Flange Sealant #51531 must be good stuff.
$25 to $40 buck for a little tube on Ebay.

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May 11, 2015 at 11:45 pm #15742
Mumbles
Participant
The Flange Sealant is very thin and has a purple color while the Gasket Maker is red and reminds me of the old OMC Gel Seal. The Surface Prep is copper based and used to speed up the cure time. There’s enough copper in the aluminum alloy to allow the sealants to set up overnight without using the Surface Prep.
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