Mayf;
Maybe I'm wrong but I think that any pressure cap has a vacuum relief valve
built- in. I have never bought one that made any reference to this but it
seems logical-- just one of those unsung features.
Regards, Neil Tucson, AZ
-----Original Message-----
From: drmayf [mailto:drmayf@mayfco.com]
Sent: Wednesday, April 16, 2008 5:40 PM
To: James Tone
Cc: Rich Fox; neil@dbelltech.com; 'LSR'
Subject: Re: [Land-speed] Radiator Catch Cans...
Hmmmm, quite frankly I hadn't even thought about a coolant recovery
system. I like that even better than a throw away system. I'll go look
at some tomorrow at autozone or carquest or checkers or whatever it is
way uptown in Pahrump. Just for drill though, doesn't a coolant recovery
system need a pressure cap on the radiator that can let the expelled
coolant back into the system? I run a pretty good pressure cap as I
recall. My coolant system is a scirroco radiator buried in a water tank.
The water tank is vented overboard but the engine coolant was going to a
big holding tank when it over flowed.
mayf
James Tone wrote:
>I'm like you Rich my roadster just dumps at the rear of the car; but it's a
tank system with no radiator. My coupe has only a radiator and an electric
pump. I do have a catch bottle with that one. It goes in the cap with the
hose extending to the bottom. There is a 1/8" hole in the top to relieve
pressure. When cooling, it sucks the expanded coolant back in. All kind are
available at McMaster-Carr: square, rectangle, round, etc...Mounts/brackets
are pretty east to make....Good Luck
>
>
>
>>>Subject: Re: [Land-speed] Radiator Catch Cans...
>>>
>>>
>>
>>
>>>Mayf;
>>>
>>>Cruise through your local junkyard and find a coolant recovery tank that
>>>looks like it will work. Most are plastic these days.
>>>
>>>
>>>
>>>I have a trunk mounted "catch can" right now. The overflow comes in from
>>>the radiator pressure cap and enters the can (actually a 3 gallon or so
>>>SS tank, lol). The tank has a over flow tube itself and that dumps
>>>overboard. Not a likely event because the can holds more that the
>>>radiator and engine combined. But, I need to replace it with something
>>>smaller as the space where the tank is curenly located is going to be
>>>occupied by a water injection system pump and tank. I see that Summit
>>>has plastic catch cans that hold a qt or so, but it looks like they are
>>>non vented types. The overflow comes in at the top and there is a drain
>>>valve at the bottom for clean out. Is this something I want to use or is
>>>there something better but still reasonable in cost? Seems to me that as
>>>water or steam comes into the overflow it is going to compress the air
>>>trapped inside making it not so efficient? In any case is it even
>>>necessary? Do all of you other folk have radiator overflow catch cans?
>>>If so, what are you using that is new and novel or just plain usefull?
>>>
>>>mayf, way off and far out in Pahrump where the )(&^%)^^%$( wind
>>>continues to blow
>>>___________________________________________
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