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Don't use RTV to seal the transmission tunnel

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suprgnat said:
Ed_K said:
Jeff,
Thanks for the info. It looks like EDPM is a poor choice as it gets very hot under that transmission cover.
I'll take a look at aircraftspruce.com at their cowl seals.
Ed
Click to expand...

FYI the EDPM is rated at 150 C, which is 302 F. I hope it's not getting that hot under the transmission cover.

Darn metric system. At least our cars were built before THAT was foisted on us...
Click to expand...
.... And it appears that I also cannot pick up the difference
between a " C " and an " F " when I am reading. Thanks for pointing it out.
/bcforum/images/%%GRAEMLIN_URL%%/confused.gif
 
Maybe I should have done the conversions before I posted it. I just get so used to using the Celsius scale at work, I never think about "translating".
Jeff
 
Bugeye58 said:
RTV is the spawn of the devil!
Get some high density foam strips.
Jeff
Click to expand...
The high density foam strips look like " sponge ".
Do they get saturated with water when soaked with water ?
How do they hold up when oil contacts them ?
They certainly are cheap and available at the local building
supply/ hardware store. Also they are soft enough to be compressed in the gap without holding the cover " away " from the knife edge.
 
Bugeye58 said:
RTV is the spawn of the devil!
Get some high density foam strips.
Jeff
Click to expand...
The high density foam strips look like " sponge ".
Do they get saturated with water when soaked with water ?
How do they hold up when oil contacts them ?
They certainly are cheap and available at the local building
supply/ hardware store. Also they are soft enough to be compressed in the gap without holding the cover " away " from the knife edge.
 
I remembered when I sealed mine down last year, I also looked into foam strips. I was concerned with them holding water. I don't know for sure if they would but it was a concern. I think after the discussion here now I'm leaning towards the vaseline with the silicone chaulk.
 
There are "closed cell" foams available which do not allow water/oil/air entry. Don't know if "high density" automatically means "closed cell". You will have to check.

A foam strip is far easier to work with. A 1/4" thick strip will compress nicely & make a perfect seal. It can even be glued in place, one side only, for easy removal.
D
 
Closed cell is the type of high density foam I meant. Not the run of the mill weatherstripping.
Cowl seal still works great.
Jeff
 
I'm not sure that household weather stripping (the black stuff sold at Home Depot et al)would hold water. It would defeat the purpose wouldn't?
 
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