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need help purchasing radiator cap

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Old 12-01-04, 09:27 AM
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need help purchasing radiator cap

should i go with an aftermarket one or an oem one?
(usually i would go for the best priced .. lowest price and does the best job)what is the oem one rated at? 16lb?
also i was thinking about going with a 13lb one .. any thoughts?
Old 12-01-04, 09:47 AM
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I believe the OEM one is 9lbs, I am using the greddy 13lbs, I dont see any ill effects since my temps dont go over 91C. You can use either one.
Old 12-01-04, 09:50 AM
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13lbs
Old 12-01-04, 10:00 AM
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generic NAPA/Pep Boys 13psi cap here. They're all the same from what I've seen.
Old 12-01-04, 10:35 AM
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Yeah I'd just buy a cheap-o one from the local parts place. I would go with a 13 PSI or 0.9 Bar cap.
Old 12-01-04, 11:31 AM
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even if you have removed the AST? I have the m2 cap and it is 16psi...
Old 12-01-04, 12:03 PM
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Don't go cheap, buy the OEM one.

I replaced my cap 3 times because my car kept leaking coolant from the overflow tank. It stopped when I bought an OEM one. Pretty scary scenario if you ask me. Thermoswitches, thermostats, and coolant caps I always buy OEM (now). These parts are relatively inexpensive but can cause a world of hurt if they go bad.
Old 12-01-04, 12:06 PM
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I have never had and issues with aftermarket as far as those go. Its what i'm using now.
Old 12-01-04, 12:13 PM
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Originally Posted by KaiFD3S
I believe the OEM one is 9lbs, I am using the greddy 13lbs, I dont see any ill effects since my temps dont go over 91C. You can use either one.
It's .9 bar (not 9psi) 13 psi OEM. you mix it, lol.


I had ussues with an aftermarket 16psi cap, went back to 13 psi OEM, no problems anymore...

Last edited by TwinTurbo93; 12-01-04 at 12:15 PM.
Old 12-01-04, 02:06 PM
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Don't go cheap, buy the OEM one.

I replaced my cap 3 times because my car kept leaking coolant from the overflow tank. It stopped when I bought an OEM one. Pretty scary scenario if you ask me. Thermoswitches, thermostats, and coolant caps I always buy OEM (now). These parts are relatively inexpensive but can cause a world of hurt if they go bad.
what were the rating on the caps you went with?
also i read somewhere that going higher could be bad for it? like 16lbs?
Old 12-01-04, 02:09 PM
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hehe oops for my second question .. i meant .. what are the effects of going with a higher number .. like 16psi?
Old 12-01-04, 03:13 PM
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Originally Posted by rescueranger
what were the rating on the caps you went with?
also i read somewhere that going higher could be bad for it? like 16lbs?
13 lbs.

It seems to be that it's a hit and miss with these cheapo aftermarket stuff. A time before that I had replaced the thersmostat and a couple of days later it got stuck. My **** hit the H in a matter of seconds. Luckily it happened on my truck which can take a slight overheating. If it would had happened on my FD: bye bye engine.

After the whole cap thing I'd decided that no more aftermarket parts for items like these. On neither my truck or FD.
Old 12-01-04, 03:36 PM
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Just get a OEM 1 from Ray @ Malloy
Old 12-01-04, 03:40 PM
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Originally Posted by TwinTurbo93
It's .9 bar (not 9psi) 13 psi OEM. you mix it, lol.


I had ussues with an aftermarket 16psi cap, went back to 13 psi OEM, no problems anymore...
woops mah bad...I had my mind set on lbs over psi while reading his thread..thanks for the correction....
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