| [GMCnet] A question for the collective brain trust [message #212836] |
Sun, 30 June 2013 11:36  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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I am in the process of improving the cooling in both of our coaches. The Royale because I no longer want to use the engine oil cooler in the aluminum radiator (don't trust it after the three failed engines in a row), the Clasco because I don't think the stock radiator is as efficient as it could/should be for where we live (it is hot in the summer time and we have to climb mean grades of 1000 to 3000 feet no matter which way we go. In both cases I want to improve the transmission oil cooling as well.
I removed the front fender liners from the Royale years ago and saw an immediate improvement in cooling with no ill effects from water splash, so likely will do that on the Clasco as well. The Royale is a 78 so has the air deflectors stock and I already added them to the Clasco. Both have lower rock shields for the radiator.
So, here are my questions from the collective brain trust:
1) should I use active (fan assisted) or passive external oil coolers?
2) should they be placed near the radiator where the heat will be directed into the radiator or away so the heat is directed away from the radiator?
3) if near the radiator, should they be in front of the AC condenser or below it?
4) Looking at the back of the radiator the lower hose is quite a ways above the bottom of the core so it seems the lower part of the radiator would do far less heat exchanging than the top. Is that really the case?
5) any other steps you would recommend?
Thanks.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed and hand crafted in the 1907 former Masonic Temple building in historic Kerby, OR
Visitors always welcome!
glwork@mac.com
http://jerrywork.com
541-499-1027
541-592-5360
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] A question for the collective brain trust [message #212847 is a reply to message #212845] |
Sun, 30 June 2013 12:21  |
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Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
Karma: -17
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Senior Member |
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Bill Bryant has been a long-time advocate of multiple perforations in the front wheel well liners for two reasons, cooling and for access for the pointy end of a fire extinguisher should the need arise. It's hard to argue either point.
I don't know that entirely removing the liner improves the perforated solution, and would most likely just toss more stuff up where you don't need it.
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
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| Re: [GMCnet] A question for the collective brain trust [message #212849 is a reply to message #212847] |
Sun, 30 June 2013 12:52 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Jerry,
From an engineering stand point, there is only one proper cooling coil to
use as the cooling capacity is 3 times greater than the straight fin with
tube running through.
BM Hydro has that type of design.
We put the Old style as an oil cooler and I can see that it was not working
very well as oil temp went up more at high speed verses the new style that
has the oil traveling through flat wafered surface.
I have always run the new style since 1992.
Jerry, there are several models with different fittings and sizes.
If you go to their site, they should give you the information you need.
As for location; I suggest mounting below the condenser and about no more
than one inch away from the radiator.
Should you
use a unit with a fan,it is always more desirable to have the fan behind
the coil so the air can reach the coil with less dead spots from the blades.
There will be times when one needs to violate these as there are space
limitation.
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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