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S3 Temp and Radiator Cap

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Old 04-14-11, 05:01 PM
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S3 Temp and Radiator Cap

I have two questions.
1. Where should the needle read on the S3 water tempature gauge when it's at normal operating temp? I.E. - 180 Degree's Fahrenheit. Pictures would be nice.
2. What radiator cap do you run and why?
-Cris
Old 04-14-11, 05:46 PM
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1. Mine sits less than halfway, closer to the cold side.
2. I run a factory cap
Old 04-14-11, 06:34 PM
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I've recently switched to a mr.gasket cap that has a built in temp gauge
Old 04-14-11, 06:51 PM
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when these were new the temp should be almost halfway, the needle is just to the left of the symbol in the middle.

however now that these have gotten old, the needles position will change with how much fuel the fuel gauge reads.

stock cap is the chugota cap. order one, that's what it says on it.
Old 04-14-11, 08:46 PM
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Mine always ran a little past the 2nd dash on the sweep but the rule of thumb given to me was never let it get past 1/2 way, I also have an e-fan with a switch so if I'm sitting still for a while I just flip it on.
Old 04-14-11, 08:54 PM
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never trust the factory gauge since it is 30+ years old already.
Old 04-14-11, 08:55 PM
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Originally Posted by WackyRicer
never trust the factory gauge since it is 30+ years old already.
Exactly.
I know everything's right so I just don't worry about it.
Old 04-15-11, 02:05 AM
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here's where mine sits. oem everything:

Old 04-15-11, 10:18 AM
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^^Thanks mazdaverx713b
Old 04-15-11, 10:41 AM
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Mine usually sits just a touch past that but not much.
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