 Sealing Engine Case Hardware?, To goop or not to goop? |
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| bkrantz |
 May 4 2021, 06:55 AM
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914 Guru  Group: Members Posts: 8,646 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains 
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In theory, sealant on all the mating surfaces for the engine case halves should contain oil and prevent leaks, and (with a couple of exceptions) the design of nuts and bolts, and where they attach, was not intended to form a seal.
But many mechanics swear by applying lots of sealant to every piece of case hardware. Is this overkill? Anyone had good luck lately with just sealant on the case halves? |
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| Mark Henry |
May 4 2021, 08:16 AM
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
My newest favorite is loctite si 5900, factory spec on 996/7.
Proper application it's a 1mm bead, it's RTV but a whole different class of sealant. I like because it replaces a couple different sealants I used to use and it cleans up fairly easy. Threebond 1185 or yamabond 4 seals a case good, but it's a PITA to clean up if you ever have to take it back apart. Both are a threebond product, it too is an RTV, lately I've had a hard time sourcing it locally so I don't use it much anymore. |
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Posts in this topic
bkrantz Sealing Engine Case Hardware? May 4 2021, 06:55 AM
ClayPerrine I use a thin bead of Drei-Bond. It is the adhesiv... May 4 2021, 07:20 AM Shivers Hi Clay. I googled Drei-Bond, haha could you post ... May 4 2021, 07:29 AM
ClayPerrine
Hi Clay. I googled Drei-Bond, haha could you post... May 4 2021, 10:33 AM Superhawk996
But many mechanics swear by applying lots of sea... May 4 2021, 08:46 AM Mark Henry
But many mechanics swear by applying lots of se... May 5 2021, 05:19 AM ClayPerrine
No sealeant under the washers sounds great in th... May 5 2021, 05:51 AM Shivers Thanks Clay May 4 2021, 12:25 PM johnhora Have had good results with these over time...
Old... May 4 2021, 02:08 PM |
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