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Re: [GMCnet] porous aluminum tranny pan [message #324336 is a reply to message #324323] Mon, 25 September 2017 08:42 Go to previous messageGo to previous message
Matt Colie is currently offline  Matt Colie   United States
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma:
Senior Member
KB wrote on Sun, 24 September 2017 21:53
Matt Colie wrote on Sun, 24 September 2017 16:35

I am personally fond of water glass (sodium silicate) as a sealant because I have never seen in fail once the impregnation process is complete. It has no temperature or solubility issues that I know of.


I'd seen some mention that water glass doesn't play well with aluminum due to different rates of expansion.
Any thoughts on that?

thanks,
Karen
1975 26'

Karen,

Your concern is well founded, but at Imtermet (RIP), it was applied as a water-weight viscosity and vacuum impregnated. Then the excess was blown off all the exposed surfaces. This part was the timing gear cover for the inline 6 International engines. Intermet finally lost the contract and filed.

Matt


Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
 
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