 Monitoring temps on a /6, Is head temp important like a /4? |
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| Allan |
 Aug 14 2007, 08:32 AM
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#1
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Teenerless Weenie  Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California  |
Is it necessary to monitor head temps on a /6 like it is on a /4?
My 2.7 has no external cooler but oil temps stay in the 205 - 215 range all the time. I'm just curious if I should also be looking at actual head temps. If it's a good idea, how is it done? Is there a head temp sender somewhere on the motor or do you have to set up an aftermarket type like a sender under one of the plugs? |
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| Allan |
Aug 14 2007, 03:58 PM
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#2
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
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| dimitri |
Aug 14 2007, 04:36 PM
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#3
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dimitri Group: Members Posts: 101 Joined: 16-March 05 From: Cupertino,CA Member No.: 3,769 |
Years ago I was running a 2.2 T with Webers in a 73 VW bus and my oil temp in
New Mexico ran a steady 300 F. After returning to the Bay Area, San Francisco, I called the Shell refinery. Was told nothing to worry about and offered a free oil analysis. The motor never quit on me, 5years later broke the ring gear and sold the van hull. kept the engine. Now I have a Vanagon Syncro with a Subaru xt6 motor, 2.7l 6cyl. Ones you experience water heating, even a Porsche motor 911 type is no match. Dimitri |
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| Rand |
Aug 14 2007, 05:00 PM
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#4
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Cross Member Group: Members Posts: 7,409 Joined: 8-February 05 From: OR Member No.: 3,573 Region Association: None |
Why are head temps important? Because certain metals can tolerate different levels of heat. And certain things break down or stretch or otherwise degrade when they are overheated... Valves, guides, etc.....
Has to do with materials and temperatures..... No to do with the number of cylinders. I get your point though... some motors are more/less prone to problems than others. But there are so many variables... About build, state of tune, cooling tin, timing, etc., etc., etc.... Me, I want to rely on the gauges that tell the state of MY engine. Not some vague guidelines about one motor or another. A decent head temp gauge with an under-the-spark-plug sender is less than $100. Good idea in my book. |
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| Allan |
Aug 14 2007, 05:56 PM
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#5
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
QUOTE(Rand @ Aug 14 2007, 03:00 PM)  A decent head temp gauge with an under-the-spark-plug sender is less than $100. Good idea in my book. What cylinder runs the hottest on a /6? |
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| SLITS |
Aug 14 2007, 07:02 PM
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#6
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
QUOTE(Headrage @ Aug 14 2007, 04:56 PM) QUOTE(Rand @ Aug 14 2007, 03:00 PM) A decent head temp gauge with an under-the-spark-plug sender is less than $100. Good idea in my book. What cylinder runs the hottest on a /6? The rear ones as installed in a 914/6 (#3, #6).... if any |
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| Eric_Shea |
Aug 14 2007, 07:14 PM
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#7
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
QUOTE The rear ones as installed in a 914/6 (#3, #6).... if any Like you would know... (IMG:style_emoticons/default/tongue.gif) |
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| Brando |
Aug 14 2007, 07:39 PM
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#8
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BUY MY SPARE KIDNEY!!! Group: Members Posts: 3,935 Joined: 29-August 04 From: Santa Ana, CA Member No.: 2,648 Region Association: Southern California |
I agree with SLITS, #'s 3 and 6 would be the warmest.
The cooling is setup differently on a flat six than the flat four. Having a fan setup that churns more air through there has a tendancy to help, too. |
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