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Old 11-29-2018, 06:57 AM   #13
bigd1101
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Join Date: Aug 2018
Location: Ithaca
Posts: 345
Default Re: pressurized radiator work around

Quote:
Originally Posted by Dave in MN View Post
bigd1101,

The size of a zero pressure cap is the same as the 4# cap and they both fit the Brassworks radiators.

A few guys commenting do not understand what radiator you have, I do. I have two pressurized systems with the radiator you name.

I am currently running a sealed (pressurized) Brassworks in my Phaeton with a 4# cap hidden under the hood. I have a Motometer on the car...as you say about your Quail, the Motometer is just for looks.

The second system is a Brassworks sealed system radiator but due to a low spot on my block, I can not hold coolant in one corner if I used a 4# cap. My temporary solution was to use a zero pressure cap on the under-hood opening.

I have used the pressurized system in my Phaeton for over 90,000 miles with no issues. I have used the zero pressure system in my '31 S/W Town Sedan for about 7,000 miles.
I currently have the engine out of the '31 S/W with the zero pressure cap to flatten the top of the block. I do plan to use a 4# cap when I put it back in the car.

Your plan to use the zero pressure cap and a reclaim tank will work. Obviously the reclaim tank should be vented to atmosphere.
Good Day!
Hi Dave.....very helpful post. Your car is a twin of mine in paint and body style. I'm going to try the pressurized cap first. I flushed the engine block quite a few times with a pressure washer after two Thermocare treatments, and a vinegar flush, top inlet and then the bottom inlet until no more "stuff" came out so I think it's pretty clean. The car was boiling over under load at 45 mph and the old radiator was clogged and worn so I went with a new Brassworks closed system. Set the timing too so I should be good to go in the Spring.





Don
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