[AT] Permatex Ultra Black

[Mike M]

Sounds good guys thanks! Sounds like the original is a design flaw, so
maybe "The Right Stuff" is the way to go.

Mike M



On 4/20/2020 9:12 AM, szabelski at wildblue.net wrote:
> Mike,
>
> I’ve used the RTV several times when I didn’t want to bother getting a new gasket, or when I just couldn’t wait for one.
>
> On critical installations I’ve followed the RTV instructions and applied a bead and then basically finger tight until the RTV oozed out. Issue here is that you need to get even pressure to get an even thickness. After it cures snug the bolts up. Also, it’s important to have all surfaces clean of oil and grease to make sure you gets good bond to both surfaces.
>
> For non critical installations, you can torque the bolts to spec, it really doesn’t take a lot to form a seal.
>
> When you apply the RTV make sure you apply it completely around all the bolt holes so that you don’t develop leaks at any of the bolts.
>
> Carl
> ----- Original Message -----
> From: Mike M <meulenms at gmx.com>
> To: Antique tractor email discussion group <at at lists.antique-tractor.com>
> Sent: Mon, 20 Apr 2020 00:01:47 -0400 (EDT)
> Subject: [AT] Permatex Ultra Black
>
> This could be old tractor related, so I don't feel bad. I have a Scag
> zero turn with a Kohler 7000 series engine. After a whopping 200 hrs the
> valve cover gaskets started to leak. There is an upgrade kit, as this is
> a known issue, that is composite and uses O-rings vs stamped steel and a
> gasket. I'm going to try some Permatex Ultra Black RTV on them as the
> upgraded versions cost about 100 bucks all told. I've read where I
> should tighten the screws loosely just enough to make the gasket maker
> start to ooze out, then wait an hour and torque them down, in this case
> 44-66 in/lbs. According to Permatex's site it says to tighten them right
> down.
>
> *"Apply a continuous and even bead of silicone to one surface,
> surrounding all bolt holes. Remove excess with knife at once. Assemble
> parts immediately. Do not squeeze out silicone by over tightening bolts.
> Re-torque will not be necessary."**
> *
> Says nothing about torquing them in the first place, just not to over
> tighten, kind of ambiguous. Has anyone used this stuff, and if so what
> method did you use?
>
> Thanks,
> Mike M
>
>
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