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03-14-2020, 06:33 AM | #1 |
Junior Member
Join Date: Mar 2019
Location: Toronto
Posts: 16
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Proper Radiator Pressure for 53 F-100?
Hi, I own a 53 Mercury M-100 (equivalent to Ford F-100) with its original flathead V8 and radiator. While working on the vehicle recently, I noted the radiator cap (which appears to be an after market replacement) is rated for 13 lbs. After doing some research, I believe this is the incorrect pressure and likely too high. Looks like perhaps I should be running either 4 or 7 lbs, based on searching some of the early ford v-8 parts suppliers. Can someone on the forum please confirm the proper spec pressure so I can replace my cap with a correct part? Thank you.
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03-14-2020, 08:18 AM | #2 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,842
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Re: Proper Radiator Pressure for 53 F-100?
I think this depends on the condition of your radiator. If it's original I'd go with the 4 lb unit. However, if you've had i tested then the 7lb one can be used I also run a 180 stat operating the engine in the 180/200 range
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03-14-2020, 08:43 AM | #3 |
Senior Member
Join Date: Apr 2015
Location: Sweden
Posts: 3,045
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Re: Proper Radiator Pressure for 53 F-100?
On the newer engines with better pump sealings and no big toptanks on the radiators it΄s less of an issue.
I don΄t even think that 13lbs cap will be a real world issue...and i have run several 7lbs with no problems. |
03-16-2020, 01:31 PM | #4 |
Junior Member
Join Date: Mar 2019
Location: Toronto
Posts: 16
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Re: Proper Radiator Pressure for 53 F-100?
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