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Original Message
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| Nope. Don't use silicone. |
| By Dave Shoe - 06/23/2004 12:21:12 PM; IP 12.2.11.190 |
Use silicone only when there is no structural support issues, such as at the front and rear of the intake manifold. In most engine, tranny, and differential instances, silicone fails miserably, soon becoming sopped with oil.
Because the pump flexes against the block as vibrations occur, you can be sure the silicone seal, blue or black, will soon absorb oil like a sponge and will dissolve away.
I use permatex gasket sealer, the brown stuff, and prefer the hardening type for this application and especially for sealing 9" differential carriers to sheetmetal axle housing. Other folk know of other sealers which work well. I'm NOT certain that gasket sealer is required in this application, but I have always had good luck with it.
The stock gasket is very thin, and this is important as the oil has much less surface to press sideways against when oil pressure is applied, thus making it unlikely to blow out under pressure.
Just my opinion,
Shoe.
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