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-   -   Radiator cap question?? (http://forums.mustangworks.com/showthread.php?t=3130)

boricua_5litro 05-17-2001 09:59 AM

Radiator cap question??
 
What pressure should the cap hold and what is the purpose for it? What is the best way to test the cap pressure?? Thanks!!

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94GT, cobra intake, 65mm TB, 75mm PRO-M, Mac cold air induction, march underdrive pulleys, Mac shorty headers, off-road H-pipe, Mac cat back, FMS drive shaft, FMS 3:73 gears, Jet chip, kirban shifter, eibach 2" lowering springs, Konig villain 17x8 front 17x9 rear.

95mustanggt 05-17-2001 10:26 AM

The cap keeps the coolant under pressure so that the liquid is under pressure. If you think back to science class you'll recall the when a fluid is under pressure the boiling point of that fluid is increased. Therefore by keeping the coolant under pressure the temperature the coolant can reach before it boils is higher.

Which is good because we never want our coolant to boil! All kinds of bad things could happen.

To test this I imagine you would put a pressure gauge were the radiator cap goes. I can't remember the pressure you are looking for though. It would be atlease a couple psi. http://www.mustangworks.com/msgboard/confused.gif

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Driving: 1998 F-150
Far way in Edmonton==> :(
1995 Mustang GT

boricua_5litro 05-17-2001 10:54 AM

I would like to test the cap, to see if its holding the proper pressure. Would a bad cap cause the engine to run hot?

slo95 05-17-2001 11:16 AM

the cap is a 16 pound, i think they test the system up to 18? not really too sure. for $3.99, go get a new one and see if it helps. Mine was bad, wouldn't let coolant into the overflow bottle, I had some wierd things going on, the hoses were under full pressure (hard), overflow bottle wouldn't take or add coolant, etc. Just get a new cap if you are unsure. I picked one up before a flush and fill the other day, and it is a Stant, says vented on it, but was spec'd for the 302 v8.

screaming_pas$enger88 05-17-2001 03:19 PM

if our coolant boils all kinds of things "COULD" happen??? i think they already did happen... lol. D@mn! i hate when my coolant boils!!!! http://www.mustangworks.com/msgboard/tongue.gif

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AIM= OneQuickStang

95mustanggt 05-18-2001 07:54 AM

Quote:

Originally posted by screaming_pas$enger88:
if our coolant boils all kinds of things "COULD" happen??? i think they already did happen... lol. D@mn! i hate when my coolant boils!!!! http://www.mustangworks.com/msgboard/tongue.gif


Smart a$$ http://www.mustangworks.com/msgboard/smile.gif


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