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1977 911S w/ 3.2 Cooling Issues
Hello,
I have a 1977 911S with a 3.2 Carrera motor swap (by previous owner) from a 1985. I have been struggling with the car running hot (220~230f) depending on the temperature outside and the length of the drive that I am going on. The car was recently serviced for a variety of issues (due to the car sitting for a while) by a local shop specializing in air-cooled cars. They cleaned and pressure tested the engine mounted oil cooler and confirmed the engine mounted thermostat was operating properly. They drove the car and confirmed it was running between 180~210 when the gauge was reading around 230f (due to the temp sender mis-match), and gave the engine a clean bill of health at this time.
The issue is, when it's hot-ish out (80deg) and I am driving the car in moderate traffic is starts to overheat based on the gauge reading 250f or above, and IR-gun temps reading around 230f at the engine oil cooler, and 215f at the front Carrera cooler. The car has some kind of aftermarket oil cooler and rubber oil lines that run all the way to the Carrera cooler (w/o fan).
I have been considering getting an oil cooler fan and metal lines to help with this situation, but my question is, do these seem like normal temps considering the setup and driving scene? Or is there some other issue I should potentially address 1st before throwing ~$1000 at new oil lines that may not actually be the issue.
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