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Old 01-03-2013, 08:26 PM   #41 (permalink)
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I was researching that Open P1 that got 376.59 miles per gallon in a 1973 and found that they also insulated the whole engine.


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Old 01-03-2013, 08:38 PM   #42 (permalink)
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That's because of extreme P&G where the engine was off more than it was on.
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Old 01-04-2013, 04:27 AM   #43 (permalink)
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My CAT 322 Excavator has a insulated valve cover.

I believe they did it for sound deadening though. (clatterpillar)

The hood and engine compartment are also insulated.

If they thought heat would be a problem for the head components, they wouldn't have done it.

Your valve cover looks good.

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Old 01-05-2013, 02:06 AM   #44 (permalink)
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Some heavy-duty Diesels are coming with compound-material valve covers, and occasionally also the oil sump, not just due to the balance of weight reduction, sound deadening and also the thermal properties, to reduce the heat losses. Diesels usually run better at a quite higher temperature, no wonder NOx emissions are their weakness...
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Old 02-12-2013, 06:55 PM   #45 (permalink)
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I'm going outside right now to look at my ALH TDI engines valve cover to see if this might be easy to implement on it. I will post results if/when I do the mod.
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http://forums.tdiclub.com/showthread...=306799&page=4

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Old 02-15-2013, 05:28 PM   #46 (permalink)
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I'm just waiting to see which vehicle I'll get this year. My dad is quite conservative, so he wouldn't want me to get an insulated valve cover into his ride...
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Old 02-16-2013, 11:12 PM   #47 (permalink)
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Quote:
Originally Posted by brucepick View Post
I have some stiff foam insulation panels. My plan is to fasten them to the underside of hood. Also possibly make a removable "hat" for the valve cover, to go over the built up foam layers it has now.

I got some high temp silicone to USA as an adhesive. Also rivet nuts to attach it to ribs in the hood.

However the winter weather is working against me. I'm not sure if I'll get to these later stages of the project before winter's end.
So what happens in the summer when temps are 90+ degrees in the shade, and much higher under the hood?

Or do you just rip all this stuff off and start gluing it back on in the fall?
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Old 02-17-2013, 05:06 PM   #48 (permalink)
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Quote:
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So what happens in the summer when temps are 90+ degrees in the shade, and much higher under the hood?

Or do you just rip all this stuff off and start gluing it back on in the fall?
Not sure how this would play out in summer. My plan was to use riv-nuts for the foam panels so removal would be reasonable.

I definitely think you need a digital engine temp display (ScanGauge has it) if you do any of these mods, also if you have a grill block.

That said, with Eco-driving , the problem isn't usually overheating, the concern becomes keeping the engine up to the desired temperature.
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Old 02-20-2013, 07:55 PM   #49 (permalink)
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My valve cover and oil pan are now insulated. I am performing engine cool down tests now to see if it helps keep more heat in over time. One thing that was immediately noticeable was the lower engine noise. If nothing else is gained, the lower noise is good enough Thanks to the OP for the idea and material useage!
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http://forums.tdiclub.com/showthread...=306799&page=4

..
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Old 02-21-2013, 12:44 PM   #50 (permalink)
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Quote:
Originally Posted by Josh8loop View Post
My valve cover and oil pan are now insulated. I am performing engine cool down tests now to see if it helps keep more heat in over time. One thing that was immediately noticeable was the lower engine noise. If nothing else is gained, the lower noise is good enough Thanks to the OP for the idea and material useage!
What did you use for the insulation?

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