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9 lb radiator cap [message #94205] Sun, 01 August 2010 16:50 Go to next message
ljdavick is currently offline  ljdavick   United States
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Someone had mentioned that it's difficult to find a 9 lb radiator cap. I was at my local parts store today and they had it in stock. It's a Federated T-9. Nice octagonal shape, too.

Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: 9 lb radiator cap [message #94246 is a reply to message #94205] Sun, 01 August 2010 22:02 Go to previous messageGo to next message
Chr$ is currently offline  Chr$   United States
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I have a 16 lb. Is 9 the correct one?

-Chr$: Perpetual SmartAss
Scottsdale, AZ

77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"

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Re: [GMCnet] 9 lb radiator cap [message #94251 is a reply to message #94246] Sun, 01 August 2010 22:39 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   United States
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My '75 - '76 manual says a 9 lb cap. If you have the aluminum radiator, and are certain that your heater core and water heater can take the pressure then you might be okay. On the other hand your 16 lb cap might only hold 9 lbs!

Larry Davick
The Mystery Machine
On Aug 1, 2010, at 8:02 PM, Chris Choffat wrote:

>
>
> I have a 16 lb. Is 9 the correct one?
> --
> -Chr$: Perpetual SmartAss
> 77 Ex-Kingsley 455, Power Drive, 3:21 FD, Quadra bag. The Engineer's Motorhome
> Scottsdale, AZ
>
> Photosite: Chrisc "It has Begun"
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: [GMCnet] 9 lb radiator cap [message #94255 is a reply to message #94251] Sun, 01 August 2010 23:12 Go to previous messageGo to next message
George Beckman is currently offline  George Beckman   United States
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ljdavick wrote on Sun, 01 August 2010 20:39

My '75 - '76 manual says a 9 lb cap. If you have the aluminum radiator, and are certain that your heater core and water heater can take the pressure then you might be okay. On the other hand your 16 lb cap might only hold 9 lbs!

Larry Davick




I agree. I have heard that the type of radiator our rigs have is not built for over 9 lbs.

'74 Eleganza, SE, Howell + EBL
Best Wishes,
George

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Re: 9 lb radiator cap [message #94259 is a reply to message #94205] Mon, 02 August 2010 00:27 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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ljdavick wrote on Sun, 01 August 2010 16:50

Someone had mentioned that it's difficult to find a 9 lb radiator cap. I was at my local parts store today and they had it in stock. It's a Federated T-9. Nice octagonal shape, too.



Auto Zone has that same 9 pound cap with octagon shape. It is very easy to remove compared to the OEM Delco one.

I have the aluminum radiator but still stayed with the 9 pound cap since my coach ever gets hot enough to need the additional pressure to prevent boiling.

I'm also running a 180 degree thermostat so the engine normally runs cooler with no vapor lock problems.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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radiator cap life span [message #94261 is a reply to message #94259] Mon, 02 August 2010 00:35 Go to previous messageGo to next message
bukzin is currently offline  bukzin   United States
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Did I hear somewhere that these caps have a short life span
and should be replaced every few years?

Bukzin
1977 Palm Beach

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Re: [GMCnet] radiator cap life span [message #94282 is a reply to message #94261] Mon, 02 August 2010 07:30 Go to previous messageGo to next message
Steven Ferguson is currently offline  Steven Ferguson   United States
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Yes, you heard it hear from Emory Stora. Make sure you get no more
than a 9lb cap.

On Sun, Aug 1, 2010 at 10:35 PM, Richard <bukzin@gmail.com> wrote:
>
>
> Did I hear somewhere that these caps have a short life span
> and should be replaced every few years?
>
>
> --
> Bukzin
> 1977 Palm Beach
> Chico California
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--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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radiator cap model numbers [message #94302 is a reply to message #94282] Mon, 02 August 2010 09:42 Go to previous messageGo to next message
bukzin is currently offline  bukzin   United States
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So which model caps are preferred?

Whats your favorite brand?


Thanks

Bukzin
1977 Palm Beach

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Re: [GMCnet] radiator cap model numbers [message #94311 is a reply to message #94302] Mon, 02 August 2010 11:11 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   United States
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No favorites here. I just bought whatever my parts house had.

Ljdavick at comcast.net

On Aug 2, 2010, at 7:42 AM, Richard <bukzin@gmail.com> wrote:

>
>
> So which model caps are preferred?
>
> Whats your favorite brand?
>
>
> Thanks
> --
> Bukzin
> 1977 Palm Beach
> Chico California
> _______________________________________________
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: [GMCnet] radiator cap model numbers [message #94320 is a reply to message #94311] Mon, 02 August 2010 12:16 Go to previous message
ljdavick is currently offline  ljdavick   United States
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By the way - my new 9 lb radiator cap was all of $4 and change. Might be something to put on the maintenance schedule - change cap, hoses, and coolant every other year...

Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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