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Old 11-06-2015, 08:26 AM   #111
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,614
Quote:
Originally Posted by Gelbster View Post
Posts like #109 are very helpful and need to be cited in future when we read of people just slapping in a replacement IMSB and flipping the car.
There are lots of draconian directives and pre failure directives published by some vendors.Now we have an example(perhaps) of why they are so insistent of specific conditions before they will warranty an IMSB replacement .
Pre-failure Directives
My car failed less than 1000 miles after an IMSB replacement by the P.O..
The freeze plug :
what if you distort the thin-wall IMS tube during insertion? Pin it & bearing+Loctite sufficient?
what if it becomes loose
Drill a small vent hole in it?
Which type of freeze plug and why? Many different types in the link I posted #108 .Cup style in s/s ,I presume?
Here is some Melling info on deep cups:
http://www.melling.com/Portals/0/Size%20Charts/Expansion%20Plug%20Dimensional%20Listing.pdf
The freeze plug is not a standard size to my knowledge, which is probably why Jake has his made for him. We took one we had on hand (cup style) and turned it down on a lathe. I do not remember the dimensions off hand, but if you have a shaft lying around you can "mike" it and figure what would be needed for an interference fit without ballooning the shaft. If memory serves, we used Loctite 37485 slip fit bearing mount adhesive to lock it in place and seal it.

Drilling a hole in it would be counter productive to sealing off the shaft from oil intrusion.
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