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Join Date: Mar 2007
Location: South Africa
Posts: 17
Thermostat 930

Hi Guys

I race a 3.0 litre turbo in a historics class in South Africa. My question is as follows : Can i omitt the exterior oil cooler thermostat, as i am only able to check the oil when the car is at running temperature. I would like to be able to check the oil at any time.

Please advise

Ta

Adrian
Old 07-30-2007, 11:44 PM
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Just a SWAG:

Two issues with that it seems to me; the oil may take much longer to warm up properly, as it'll be circulating through any external cooler(s) fitted as soon as the motor thermostat opens.

Secondly, you should only check the oil when the oil is up to temperature anyway - because it expands as it gets hotter - if you check the level when cold, you will over-fill and it will puke it all out when it gets hot.


I presume you want to be able to start the car, warm it up on the track for a few laps and go playing without having to stop and check the oil - but also would like to be confident you have enough oil before whaling on it...

How about this? Warm the oil to normal operating temperature and then allow to cool to ambient. Make a mark for "cold" oil level. If ambients vary a lot, you may need to repeat at a few different temperatures - you may also need a longer dipstick to check, dunno quite how far down into the tank it actually goes...

I'm sure someone who knows what they're talking about will be along in a while
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Old 07-31-2007, 12:52 PM
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Don't do it. The thermostat is there to protect your external oil cooler from the high pressures of cold oil. Without the thermostat, cold thick oil will be forced through your oil cooler at high pressures when you start your motor and can burst your oil cooler.
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Old 07-31-2007, 01:25 PM
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Hello all going to fit a s/h thermostat on my 930 when I run the engine for the first time how will I know the thermostat is working ok and that the thermostat is working how it should ?.

SEE YA
Old 12-15-2007, 04:55 AM
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Quote:
Originally Posted by SEE YA View Post
Hello all going to fit a s/h thermostat on my 930 when I run the engine for the first time how will I know the thermostat is working ok and that the thermostat is working how it should ?.

SEE YA
Hi,
You can feel the front oil lines and they'll be warm/hot. So will the front cooler when oil is flowing thru it.

Les
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Old 12-15-2007, 05:55 AM
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Yes, and the lines should be cold at first until the oil gets up to a good temperature on the gauge.
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Old 12-15-2007, 08:30 AM
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My car ran for 2 years with the thermostat going to the front oil cooler stuck open. I had changed to Mobile 1 when it happened and just thought it made the car run cooler because it would rarely get over 80c even running hard.
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Old 12-15-2007, 12:24 PM
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Les- that may be true for the oil- but the reason the oil temp was cooler was because it wasnt absorbing/carrying away enough heat.
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Old 12-15-2007, 07:03 PM
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With the new thermostat which is a ***** to change out on a housing 32 years old, it now runs where it should. Between 80-100C. I had put some 5-50 Mobile 1 and I think I read it on this forum to use 15-50 which I am now.
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Old 12-16-2007, 04:11 AM
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