More gasket thoughts - sealant thickness?

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AndyPen
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More gasket thoughts - sealant thickness?

Post by AndyPen »

I've spent a bit of time setting up my transfer gear shimming with help from kind folks on here, and other thought has just occurred. Ideally I want to use gasket sealant to 'belt and braces' my engine, and my go to is Permatex aircraft quality. I can't find any info online as to what thickness this might (or might not) add?

Has anyone found an answer, or have any thoughts please?

I'd use RTV on the half moon seal btw, as that is what I've read works best there.
Oneball
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Re: More gasket thoughts - sealant thickness?

Post by Oneball »

Simple answer is it doesn’t add anything
AndyPen
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Re: More gasket thoughts - sealant thickness?

Post by AndyPen »

Thanks for that - I did wonder so thought it worth checking ;-)
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Ronnie
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Re: More gasket thoughts - sealant thickness?

Post by Ronnie »

Andy if the mating faces are good and a new gasket is used there should be no need to use as the new gasket should seal. :?
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Rolandino
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Re: More gasket thoughts - sealant thickness?

Post by Rolandino »

I shim the idler gear 1 thou thinner, then put on a very fine smear of Kent Silica gasket, that makes up the 1 thou
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AndyPen
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Re: More gasket thoughts - sealant thickness?

Post by AndyPen »

Ronnie wrote: Mon Sep 11, 2023 3:40 pm Andy if the mating faces are good and a new gasket is used there should be no need to use as the new gasket should seal. :?
I have a slight doubt about the gearbox side Ronnie, it is quite discoloured in a patchy kind of way, yet feels smooth. It is a 190 box so I'd like to use a smear of sealant to give myself the best chance of it staying oil tight.
AndyPen
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Re: More gasket thoughts - sealant thickness?

Post by AndyPen »

Rolandino wrote: Mon Sep 11, 2023 4:54 pm I shim the idler gear 1 thou thinner, then put on a very fine smear of Kent Silica gasket, that makes up the 1 thou
Cheers Roland, that was my first thought too.
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