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#4530476 - 09/30/17 05:48 PM Permatex Ultra Black Question
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
The instructions say to apply the product to ONE surface.

If I apply the product to BOTH mating surfaces, am I screwed ? frown

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#4530481 - 09/30/17 05:51 PM Re: Permatex Ultra Black Question [Re: Merkava_4]
BrocLuno Offline


Registered: 09/06/15
Posts: 5511
Loc: Kalifornia Kollective
Will they both be wet at the same time? If so, you are OK. But why go to all the bother ... Put it on the receiving surface and gently place the other part and snug lightly. Torque after set smile
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Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4530485 - 09/30/17 05:55 PM Re: Permatex Ultra Black Question [Re: Merkava_4]
TinyVoices Offline


Registered: 09/12/16
Posts: 480
Loc: Vienna, VA
You are fine. I do this for corners of valve covers where the seal does a 90.
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1993 Toyota MR2 Hardtop N/A - 157k miles - Valvoline Max Life 5w30
2006 Toyota Matrix XR AWD (Fiancee) - 126k miles - Valvoline Max Life 5w30

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#4530494 - 09/30/17 06:05 PM Re: Permatex Ultra Black Question [Re: Merkava_4]
rollinpete Offline


Registered: 03/20/17
Posts: 450
Loc: West Ma.
Originally Posted By: Merkava_4
The instructions say to apply the product to ONE surface.

If I apply the product to BOTH mating surfaces, am I screwed ? frown


Your all done start over again... spank
_________________________
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97 Ford Expl.Sport 4.0 ohv 4wd 5spddrive183k miles
Last Change;
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Fram xg8a, Fram CA8141

(Oil) Where would we be with out it.


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#4530505 - 09/30/17 06:18 PM Re: Permatex Ultra Black Question [Re: BrocLuno]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Originally Posted By: BrocLuno
Will they both be wet at the same time? If so, you are OK. But why go to all the bother ... Put it on the receiving surface and gently place the other part and snug lightly. Torque after set smile


Yes, both sides were wet during assembly.

Surface A was the intake manifold and Surface B was the thermostat housing.

I didn't put a bead down, but instead I cake frosted the surfaces with a thin coat.

And another thing I'm not so sure on is that after assembly, I wiped off the squeeze out; is that a NO-NO ?

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#4530578 - 09/30/17 08:11 PM Re: Permatex Ultra Black Question [Re: Merkava_4]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17770
Loc: PNW
Originally Posted By: Merkava_4
And another thing I'm not so sure on is that after assembly, I wiped off the squeeze out; is that a NO-NO ?

That's fine, the sealant trapped between the two surfaces does all the sealing. The excess on the outside of the joint seam does little to nothing in terms of actually sealing.

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#4530621 - 09/30/17 08:50 PM Re: Permatex Ultra Black Question [Re: ZeeOSix]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
Hey thanks ZeeOSix! I can relax now. smile2

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#4530624 - 09/30/17 08:53 PM Re: Permatex Ultra Black Question [Re: Merkava_4]
sw99 Offline


Registered: 03/22/06
Posts: 2120
Loc: Colorado
I've done both and not a noticeable difference when removing. Have you ever used the Right Stuff?
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#4530633 - 09/30/17 09:06 PM Re: Permatex Ultra Black Question [Re: sw99]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
I haven't used the Right Stuff yet. The 5-minute working window would be cause for some anxiety unless I could lay a bead down as fast as the robots do. And then as expensive as it is, I'd be afraid of what's left in the container drying up.

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#4530800 - 10/01/17 02:09 AM Re: Permatex Ultra Black Question [Re: Merkava_4]
ZeeOSix Offline


Registered: 07/22/10
Posts: 17770
Loc: PNW
I've used Ultra Black on dozens of projects and it's never failed to do the job. thumbsup

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#4530803 - 10/01/17 02:12 AM Re: Permatex Ultra Black Question [Re: Merkava_4]
Colt45ws Offline


Registered: 08/15/06
Posts: 9637
Loc: Central Washington
Originally Posted By: Merkava_4
I haven't used the Right Stuff yet. The 5-minute working window would be cause for some anxiety unless I could lay a bead down as fast as the robots do. And then as expensive as it is, I'd be afraid of what's left in the container drying up.

I stick it in the freezer. Slows the chemical reaction down significantly.
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2002 Ford Crown Vic PI 207k, Ex-Kootenai County, ID Unit #42
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#4530816 - 10/01/17 02:43 AM Re: Permatex Ultra Black Question [Re: Merkava_4]
Johnny2Bad Offline


Registered: 05/20/13
Posts: 1810
Loc: Saskatchewan, Canada
I think the "one surface rule" is for when you wait the 20 minutes for it to skim set and then assemble. If you are assembling immediately, I don't think it matters, but be careful you don't apply too much (use half the recommended bead size on both surfaces). If you over-apply blobs of cured RTV can break off the assembly and clog oil passages. A continuous bead is all that's needed.

You're probably OK that way if you skim coated the parts and you didn't see too much excess squeeze out from the outside (visible) portion of the assembly, plus you were doing water passages, not oil-wetted ones.
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#4531429 - 10/01/17 06:18 PM Re: Permatex Ultra Black Question [Re: Johnny2Bad]
Merkava_4 Offline


Registered: 01/30/07
Posts: 17501
Loc: Clovis, CA
So far no leaks, but I did give it a full 24 hour cure time before I even poured the coolant back in. The new thermostat won't let the engine cool down to 176F with the air conditioner on like it used to. It's holding the engine to 198F with the A/C on.

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#4531770 - 10/02/17 05:25 AM Re: Permatex Ultra Black Question [Re: Merkava_4]
Lubener Offline


Registered: 01/22/11
Posts: 2576
Loc: N.Ohio
Yes, both sides were wet during assembly.

Surface A was the intake manifold and Surface B was the thermostat housing.

I didn't put a bead down, but instead I cake frosted the surfaces with a thin coat.

And another thing I'm not so sure on is that after assembly, I wiped off the squeeze out; is that a NO-NO ? [/quote]

I would have used a gasket with Permatex 2 instead for the thermostat housing.


Edited by Lubener (10/02/17 05:27 AM)
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