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Re: [GMCnet] Oh, Sure, Another Fan Clutch [message #247525 is a reply to message #247434] Tue, 15 April 2014 17:14 Go to previous messageGo to previous message
sgltrac is currently offline  sgltrac   United States
Messages: 2797
Registered: April 2011
Karma:
Senior Member
I was having above "normal " temps with The Pig despite new radiator,hoses,water pump,engine, blocked crossover on intake, new fan clutch etc. I have the oem fan shroud without Venturi ring. The elevated temps were only experienced at hi way speeds and were tied to travel speed. The faster I went, the hotter it got. After conversing with Jim Hupy on the phone while I was in LA looking the engine over he asked me about the air deflectors in front of the radiator and behind the grill. I had none and there had not been any there since I bought the coach. Jim described them to me and I rigged up deflectors with 1/8" plywood sheet/ rebar tie wire/ jigsaw. The temps on the way home never got above 220 and typically hovered at 200-210 no matter the travel speed. I ha seen peak temps of 240 prior even after backing down the travel speed to drop the temp. If your coach does not have these deflectors in place I highly recommend you buy some ( I hear Bert and Fay make them) or make up a
pair.

Todd Sullivan

Sully
77 royale
Seattle

> On Apr 14, 2014, at 5:53 PM, KB <kab7@sonic.net> wrote:
>
>
>
> Hey Kerry, Armand Minnie did a very nice write-up about the air baffles he installed, and the effect on the fan clutch.
> See:
> http://minniebiz.com/gmcmotorhome/2011/05/20/gmc-engine-cooling-issues/
>
> Baffles are on my wish list...
>
> Karen
> 1973 23'
> 1975 26'
>
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Sully 77 Royale basket case. Future motorhome land speed record holder(bucket list) Seattle, Wa.
 
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