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Author Topic: Which sealant for the sump pan?  (Read 1020 times)

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05omegav6

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Which sealant for the sump pan?
« on: 03 October 2015, 19:25:42 »
As above...

Black or grey goo :-\
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Sir Tigger KC

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Re: Which sealant for the sump pan?
« Reply #1 on: 03 October 2015, 19:29:21 »
I used grey, but it had black on it when I took it off.  ::)

I did buy a tube of other automotive sealant which was red and much cheaper than Vx goo, but as I had some grey left I used that.  :y

It's doing the job.  8)

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05omegav6

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Re: Which sealant for the sump pan?
« Reply #2 on: 03 October 2015, 19:35:05 »
 :y need to stock up ready... black one is a bit, um, leaky ::)
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Andy B

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Re: Which sealant for the sump pan?
« Reply #3 on: 03 October 2015, 19:45:33 »
Quote from: Harris K Telemacher on 03 October 2015, 19:25:42
As above...

Black or grey goo :-\

grey  :y :y ..... it sets fairly hard

the black stuff stays rubbery even when set and I'd guess the stuff that squeezed out in the inside would eventually come off due to the hot oil ....... like it did on her/our/my Smart
 
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05omegav6

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Re: Which sealant for the sump pan?
« Reply #4 on: 03 October 2015, 19:48:42 »
That makes sense... there's evidence of it having been done before
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zirk

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Re: Which sealant for the sump pan?
« Reply #5 on: 03 October 2015, 19:53:04 »
I always go, metal to metal Grey, metal to gasket Black.
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Nick W

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Re: Which sealant for the sump pan?
« Reply #6 on: 03 October 2015, 21:30:17 »
Loctite 5910 flange sealant.
Black, semi setting RTV intended for permanent oil contact. Like sumps. Probably the OE supplier anyway.
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Andy B

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Re: Which sealant for the sump pan?
« Reply #7 on: 03 October 2015, 21:41:59 »
Quote from: Nick W on 03 October 2015, 21:30:17
Loctite 5910 flange sealant.
Black, semi setting RTV intended for permanent oil contact. Like sumps. Probably the OE supplier anyway.

so Loctite black is the same as GM's grey?  ::) ::)
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Nick W

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Re: Which sealant for the sump pan?
« Reply #8 on: 03 October 2015, 21:52:35 »
It doesn't actually matter as ordinary household silicone, in whatever colour you have lying about, will do the job. The important thing is that you only need a smear of whatever you use in the join to work properly.


Several years ago I was told by an Ilmor engine builder that the head gaskets were the only 2 gaskets in the engine. Everything else was sealed with Dow Corning 797 clear silicone  as used by the pallet load by window fitters.
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Andy B

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Re: Which sealant for the sump pan?
« Reply #9 on: 03 October 2015, 21:59:11 »
Quote from: Nick W on 03 October 2015, 21:52:35
It doesn't actually matter as ordinary household silicone, in whatever colour you have lying about, will do the job. The important thing is that you only need a smear of whatever you use in the join to work properly.


Several years ago I was told by an Ilmor engine builder that the head gaskets were the only 2 gaskets in the engine. Everything else was sealed with Dow Corning 797 clear silicone  as used by the pallet load by window fitters.


A smear of A N Other sealant might very well be OK on things where there is a proper metal to metal contact over a reasonable area, a sump is a presses steel affair & the mating surface is unlikely to seal with just a smear
« Last Edit: 03 October 2015, 22:01:23 by Andy B »
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