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Registered
Join Date: Mar 2019
Location: Saarland, Germany
Posts: 1,195
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The fan was added on all catalyst versions from 1987 on.
The fan was operated by a thermostat switch, switching temperature was 118°C / 245°F.
https://rennlist.com/forums/911-forum/614959-oil-cooler-identification.html
I always recommend to check the ignition timing both on idle and overall rpm band if it's correct and in spec. I personally experienced some years ago what heat a stucked advance timing could produce!
The 118°C/245°F switching temperature is a good to get an idea when oil temperature is getting too high! So the desired oil temp should be lower / not higher than this. Under all operating conditions!
Thomas
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1981 911 SC Coupé, platinum met. (former tin (zinc) metallic), Bilstein shocks, 915/61,930/16,WebCam20/21, Dansk 92.502SD,123ignition distributor with Permatune box as amplifier,Seine Systems Gate Shift Kit,Momo Prototipo. Want to get in touch with former owners of the car. Last registration in US was in 2013 in Lincolnshire/lL.
Last edited by Schulisco; 06-26-2024 at 08:07 AM..
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