Radiator Cores and Fans

[donald w. miller]

Our 75 Glennwood only has 26,000 miles, but like me, it's age is certainly
showing.

The radiator has a minor leak. Several days ago, I cut the radiator support
sides near the bottom and dropped the radiator out the bottom.

Both rusty transmission cooling lines ruptured when I moved them SLIGHTLY to
take out the fan shroud.

The engine oil cooler lines were brittle too, both the steel tubing and the
rubber portions.

I am really lucky they didn't fail on the delivery trip home.

I probably could patch up the old radiator core, but considering it's age,
I'll probably have a new core installed.

Are better cores available than this original type?

Also, I know Heinz and others are using electric fans to supplement
cooling.

Has anyone removed the engine driven fan and replaced it with multiple large
electric fans?

Don
Shenandoah Valley of Virginia

 

[john wright]

I just had mine recored with the HD 4 Pass core, if you use anything
less your asking for trouble.
J.R. Wright
77 Eleganza II

>
> Our 75 Glennwood only has 26,000 miles, but like me, it's age is certainly
> showing.
>
> The radiator has a minor leak. Several days ago, I cut the radiator support
> sides near the bottom and dropped the radiator out the bottom.
>
> Both rusty transmission cooling lines ruptured when I moved them SLIGHTLY to
> take out the fan shroud.
>
> The engine oil cooler lines were brittle too, both the steel tubing and the
> rubber portions.
>
> I am really lucky they didn't fail on the delivery trip home.
>
> I probably could patch up the old radiator core, but considering it's age,
> I'll probably have a new core installed.
>
> Are better cores available than this original type?
>
> Also, I know Heinz and others are using electric fans to supplement
> cooling.
>
> Has anyone removed the engine driven fan and replaced it with multiple large
> electric fans?
>
> Don
> Shenandoah Valley of Virginia

 

[voyager]

I wonder...A squirrel cage or two might just
be the ticket. Maybe the ones in the heater
might work. I Dont Know!
Rob Teed 74 Painted Desert

( Is a GMC a hole in the driveway You throw Money in? )
Boat owners know what I mean .)

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailtowner-gmcmotorhome]On Behalf Of
> RickStapls
> Sent: Sunday, December 06, 1998 10:54 PM
> To: gmcmotorhome
> Subject: Re: GMC: Radiator Cores and Fans
>
>

>
> > Has anyone removed the engine driven fan and replaced it with
> multiple large
> > electric fans?
> Don,
> I've heard of several attempts to do this, but they all report that the
> electric fans alone are not sufficient to cool the GMC under
> load. (The stock
> fan probably takes about 25 HP at high engine rpm.) As a supplement, they
> work well.
>
> Rick Staples
> '75 Eleganza
>

 

[thomas g. warner]

I am still trying to find my information on the radiator substitute. I
believe it was a 1988 Chev C600 with a 454 engine. The radiator is soldered
just like the original GMC motorhome radiator. A suitable radiator has to
have a core 4 rows deep, and have 13 fins per inch or more.

>Don
>
>The tranny lines on my 76 Glenbrook were also very rusty. I went to the
>local shop which does all of the hydraulic lines and hoses for the
>local coal mines. I did not get stainless steel tranny lines. The local
>shop does them but they do not think they are cost effective. After
>he showed me the prices I agreed with them. I did get the braided
>SS lines for the oil cooler lines. The new Gates C-14 material.
>I had them made 4 inches longer than the original ones. This allowed
>me to extend the bracket so I could get them further away from the
>manifold. All of this cost me well under $100. Thats what I did.
>
>As far as a radiator there was a post here some time ago about
>one from a 454 that would fit perfectly. I cant confirm or deny
>that. Hope that helps.
>
>Take Care
>Arch
>>
>> Both rusty transmission cooling lines ruptured when I moved them SLIGHTLY
>to
>> take out the fan shroud.
>>
>> The engine oil cooler lines were brittle too, both the steel tubing and the
>> rubber portions.
>>
>
>
Tom & Marg Warner
Vernon Center NY
1976 palmbeach