| [GMCnet] ENGINE OIL COOLING LINES [message #109323] |
Tue, 21 December 2010 16:25  |
Charles Aulgur
Messages: 78
Registered: March 2006
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I want to pass on another item about the cooling lines that you may
want to consider. Many years ago when I first installed new hoses, I
also decided it might be a good idea to also change the metal lines
to SS. On my vehicle the metal lines were supported from a bracket
near the front of the engine. The bracket and the upper piece of the
clamp had been covered at the factory with some type thick woven
material I assume for insulation. When I unbolted the support bracket
to remove the metal tubes there were rather large spots of rust on
the lines where they had been clamped. I removed the rust spots that
were almost through the metal lines and discovered it was a good
thing I changed the lines as it would not have been very long until
they rusted through and probably would have squirted oil on the
nearby exhaust manifold. Apparently the fabric they used under the
clamp retained enough moisture to cause the rust.
Chuck Aulgur
La Mesa, CA where it has been raining for three days
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| Re: [GMCnet] ENGINE OIL COOLING LINES [message #109397 is a reply to message #109323] |
Wed, 22 December 2010 08:37  |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Chuck,
My only beef about SS lines is that the SS is so much harder than the
mating parts (flare fittings) and often galls the heck out of softer
materials. This can really be a problem on the male (brass) part of a flare
fitting. Even the very best flares rely on compression for sealing and when
the female part is harder than the male part, it takes a tremendous amount
of pressure to get the proper seal.
Years ago I picked up about 5-600 ft of 3/8 SS seamless tubing from Rhor's
salvage yard. Now, many cars and motorhomes later, my supply is finally
running out but I can tell you for sure, I've had my issues with flare
fittings because of it.
Good to see you back.
On Tue, Dec 21, 2010 at 3:25 PM, Charles Aulgur <cwasdc@sbcglobal.net>wrote:
> I want to pass on another item about the cooling lines that you may
> want to consider. Many years ago when I first installed new hoses, I
> also decided it might be a good idea to also change the metal lines
> to SS. On my vehicle the metal lines were supported from a bracket
> near the front of the engine. The bracket and the upper piece of the
> clamp had been covered at the factory with some type thick woven
> material I assume for insulation. When I unbolted the support bracket
> to remove the metal tubes there were rather large spots of rust on
> the lines where they had been clamped. I removed the rust spots that
> were almost through the metal lines and discovered it was a good
> thing I changed the lines as it would not have been very long until
> they rusted through and probably would have squirted oil on the
> nearby exhaust manifold. Apparently the fabric they used under the
> clamp retained enough moisture to cause the rust.
>
> Chuck Aulgur
> La Mesa, CA where it has been raining for three days
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
Sierra Vista, AZ
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