Car running hot is it the Evans coolant? - Page 8 - Alfa Romeo Bulletin Board & Forums
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post #106 of 113 (permalink) Old 06-21-2019, 01:07 PM
PSk
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Excellent news.

Re fan on all the time, I think it would be better to get a sensor that triggers at a lower temperature.
Pete
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post #107 of 113 (permalink) Old 06-25-2019, 08:26 AM Thread Starter
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Excellent news.

Re fan on all the time, I think it would be better to get a sensor that triggers at a lower temperature.
Pete
Noted. Thanks.

As an aside, I can report that the car is much happier on 140 main jets now. It pulls very cleanly now from low revs even when cold, which it certainly didn’t do before, and it seems to have more power overall.

Still needs a proper shakedown run on a hot day, so there will be at least one more update...

1976 Spider
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post #108 of 113 (permalink) Old 06-25-2019, 09:55 AM
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Very good news regarding the temperature. Did you change to the 140 main jets after you did your recent temperature test drives?

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post #109 of 113 (permalink) Old 06-25-2019, 10:26 AM Thread Starter
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No, before, but I expect the jets are immaterial to my temperature issues.

I know, this is not how they taught us to do it in science class...

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post #110 of 113 (permalink) Old 06-26-2019, 10:35 PM
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My electric fan behaves like yours does, unless I'm moving. If we had one of those smaller, dual fan setups, maybe it would drop faster when not moving? Or bigger fans, who knows. Mine is doing a great job in 90deg weather; I'm pretty happy with it.

My last hot temp issue was solved by checking the actual level in the radiator after I had removed the CTS and a bunch drained out. I didn't think about checking it, and that pigmat sure does a great job of soaking lots of coolant up! First 90+ deg day it started climbing past 180, I ended up finding out that coolant was really low. Duh.

My TR6 has a thermal issue almost like you describe. Once the temp reaches a certain point I better be moving forwards or she keep creeping up. I even used a thermostat that opens earlier. Need to swap out the original radiator for peace of mind this year...

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post #111 of 113 (permalink) Old 06-26-2019, 11:05 PM
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Here is another issue for you to consider, (I've had lots of cars with lots of wonderful issues over the last 45 years) it was a Lancia Beta coupe beautiful car, but ran hot and just kept climbing slowly. I took the radiator to a repair shop, who pulled the tanks and cleaned the core with a special acid cleanser, then hot blasted the cores and then soldered the tanks back on. Took the car out for a run and still the same problem, drove me nuts. I was telling a mate of mine about it and he said i needed a new radiator , I said B U L L S H I T but he insisted, so much so, he gave me a spare radiator he had to try. Needless to say he was 100% correct. Apparently crud builds up in the core and over time it welds itself to the inside of the core till, it gets to a stage where the heat from the motor won't transfer to the fins attached to the core flutes........ Old cars who'd have em......Duh
P.S. As well as paying for the new radiator I had to pay the $50.00 bet I lost.

Current cars 1975 spyder under resto, 1973 Berlina Resto 1976 Berlina parts car 1972 GTjunior fully restored, 1 complete rolling shell spyder.exit 1989 75 T/S sold
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post #112 of 113 (permalink) Old 06-27-2019, 10:11 AM Thread Starter
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My last hot temp issue was solved by checking the actual level in the radiator after I had removed the CTS and a bunch drained out. I didn't think about checking it, and that pigmat sure does a great job of soaking lots of coolant up! First 90+ deg day it started climbing past 180, I ended up finding out that coolant was really low. Duh.
Sweet grandmother’s spatula! How have I not heard of this pigmat stuff!?

Just this week I managed to drop a whole sump’s worth of oil on my garage floor ☹️

1976 Spider
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post #113 of 113 (permalink) Old 06-27-2019, 10:15 AM
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Boaters are the typical market for this stuff as it absorbs petroleum products out of water. Not a water absorbent however.

Briddish car owners would be a likely market!

Richard Jemison
RJR Racing

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