 ideal operating temp, ideal operating temp |
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| newto914s |
 Apr 8 2004, 12:00 AM
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Senior Member  Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663  |
What is the ideal operating temperature for a 74 2liter with dual Weber carbs? If the oil temp gauge is reading 240 after 45 minutes on the road is this bad?
I'm thinking about getting a 914 and the owner described this as one of the cars "possible'" mechanical issues. The engine is also leaking from the valve covers. Could these two problems be related? |
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Replies(1 - 7)
| Bleyseng |
Apr 8 2004, 12:04 AM
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Aircooled Baby! Group: Members Posts: 13,035 Joined: 27-December 02 From: Seattle, Washington (for now) Member No.: 24 Region Association: Pacific Northwest |
Thats running fairly hot, the question is why?
Fixing the leaky valve covers is pretty easy. If its from the pushrod tubes its alot more work to fix. Geoff |
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| Rich Bontempi |
Apr 8 2004, 12:17 AM
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914 Road Racer Group: Members Posts: 167 Joined: 5-February 03 From: Redwood City Ca. 94063 Member No.: 239 Region Association: Northern California |
Ideal oil temp would be in the 190 to 210 range. A little hotter will work, but 240 is hotter than desireable. The valve covers leaking oil isn't related unless they've lost enough oil for the engine to be low on oil. Which can make it run hotter.
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| SirAndy |
Apr 8 2004, 12:30 AM
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#4
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Resident German Group: Admin Posts: 41,680 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
QUOTE(newto914s @ Apr 7 2004, 10:00 PM) What is the ideal operating temperature for a 74 2liter with dual Weber carbs? If the oil temp gauge is reading 240 after 45 minutes on the road is this bad? yupp, that's too hot. you should not see that kind of temp unless you are on the track pushing the car hard for a few laps ... normal running temp should be just below 200f ... there are a lot of reasons why a T4 will run hot. lean mixture is one. dirt/grime in the cooling fins. plugged oil-cooler/filter etc. cooling flaps could be stuck (do you still run the thermostat?) Andy |
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| 914ghost |
Apr 8 2004, 09:45 AM
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BOB Group: Members Posts: 406 Joined: 25-November 03 From: Wenatchee Washington Member No.: 1,387 |
Don't rule out that the oil temp guage CAN be wrong. They usually are unless set up by someone who is knowledgable of these cars..
If you REALLY want to know you'll have to either check the guage or the oil temp by some other means. There are a few ways to do this, but sorta a pain, involves boiling liquid and pulling your sender. -Bob O |
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| lapuwali |
Apr 8 2004, 09:56 AM
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743  |
To check oil temp, you can also just poke a meat thermometer (the kind with the cable and probe) down the dipstick hole. Alternatively, buy a thermistor from Radio Shack for under a buck, solder it to a length of wire, and use your DVM instead.
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| newto914s |
Apr 11 2004, 08:13 PM
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#7
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Senior Member Group: Members Posts: 561 Joined: 16-February 04 From: Thornton, CO Member No.: 1,663 |
What do you think the head temp should be?
Apparently this car was raced a number of years ago so it's equipped with a couple of extra gauges. One gauge reads ether the cylinder or head temperature, I can't remember right now. (IMG:style_emoticons/default/drunk.gif) |
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| lapuwali |
Apr 11 2004, 08:52 PM
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#8
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
It depends on where the sensor is located. If it's under a spark plug, it should run about 325-375dF, depending on load.
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