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FYI: 2010 Evo X Plastic Valve Cover

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Old Oct 28, 2010 | 10:29 PM
  #136  
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I say if a plastic valve cover changed your mind from a 2010 X to an 87 Starion, when you could've easily just swapped valve covers, is just CRAZY! Waying out the diff between a 2010 X and an 87 Starion, I'd choose the X anyday! And you say build quality sucks, AMS' TA-X car will run all over that Starion. Just sayin....
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Old Feb 7, 2011 | 03:22 PM
  #137  
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I was topping-off the oil in my SE for the first time and noticed the plastic valve cover. Not that it really matters but it definitely took my by surprise. It just seems kinda cheap.

I swear I've seen published pics of a stock, '10 gsr with an aluminum cover. But oh well...
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Old Feb 7, 2011 | 04:20 PM
  #138  
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Less Temps, Less weight.... what ever
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Old Feb 7, 2011 | 05:16 PM
  #139  
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Does it leak?

Isn't that all that's asked of a valve/camshaft cover?

It just needs to keep the oil from flinging all over the underside of the hood, right?

The valve cover doesn't bear a load. The valve cover's temperature tolerance needs to be in the 100s of degrees F (hot oil and proximity to exhaust manifold, etc.) - so as long as it can tolerate that and not leak... what's the problem?

Personally, I plan on leaving the red/black cover on the engine. "No officer... that's totally stock..."
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Old Feb 7, 2011 | 07:00 PM
  #140  
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From: SoCaL
Originally Posted by GST Motorsports
Interesting thing to note is that the 2010 Ralliart still has the metal valve cover where the 2010 Evolution moved to the black plastic composite valve cover.

- Bryan
^^^this... my 2010 RA


Uploaded with ImageShack.us
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Old Feb 7, 2011 | 07:08 PM
  #141  
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Very odd. What is your intention Mitsu?!?!
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Old Feb 7, 2011 | 07:13 PM
  #142  
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From: SoCaL
pretty weird idk why mitsu put some cheap plastic valve cover on the evo X considering its their flagship car???
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Old Feb 7, 2011 | 07:14 PM
  #143  
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Originally Posted by Kracka
Very odd. What is your intention Mitsu?!?!
to cheap out on evo owners
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Old Feb 8, 2011 | 02:56 PM
  #144  
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Originally Posted by vleigh6
Does it leak?

Isn't that all that's asked of a valve/camshaft cover?

It just needs to keep the oil from flinging all over the underside of the hood, right?

The valve cover doesn't bear a load. The valve cover's temperature tolerance needs to be in the 100s of degrees F (hot oil and proximity to exhaust manifold, etc.) - so as long as it can tolerate that and not leak... what's the problem?

Personally, I plan on leaving the red/black cover on the engine. "No officer... that's totally stock..."
When the valve cover starts to melt after being on a track for 20 minutes allowing oil to cover your exhaust manifold and light on fire...

That's the problem! You basically get a barbeque...

You can ask AMS why they swapped a metal valve cover onto the Kids with Cancer Evo despite having all kinds of heat shields for their turbo kit on the car. It was just too much risk and not worth the difference in cost that Mitsu saved on these. Of course when driven on the street with a stock turbo setup it will probably never be a problem but get an upgraded exhaust manifold/tubular headers and you'll test the melting point of that composite rather quickly.
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Old Feb 8, 2011 | 03:04 PM
  #145  
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Originally Posted by Hiboost
When the valve cover starts to melt after being on a track for 20 minutes allowing oil to cover your exhaust manifold and light on fire...

That's the problem! You basically get a barbeque...

You can ask AMS why they swapped a metal valve cover onto the Kids with Cancer Evo despite having all kinds of heat shields for their turbo kit on the car. It was just too much risk and not worth the difference in cost that Mitsu saved on these. Of course when driven on the street with a stock turbo setup it will probably never be a problem but get an upgraded exhaust manifold/tubular headers and you'll test the melting point of that composite rather quickly.
it is actually hard to believe you can melt that cover under the hood. I want to see that.
If that will occur there there is many other things will melt also / like hoses wires etc/ or not? SInce they have a lot less tolerance for heat.
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Old Feb 8, 2011 | 03:19 PM
  #146  
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Well the problem is when you have tubular manifold runners being only a few inches (or less!) from the valve cover glowing orange it's really tough to get a heat shield in between them to be 100% effective. Most other lines and other heat sensitive components are at least 6 inches away if not more which is huge when determining how much heat is being radiated. I already tested how the electrical connector on the back driver side of the valve cover can start to melt if not properly shielded.
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Old Feb 8, 2011 | 04:42 PM
  #147  
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Originally Posted by Hiboost
Well the problem is when you have tubular manifold runners being only a few inches (or less!) from the valve cover glowing orange it's really tough to get a heat shield in between them to be 100% effective. Most other lines and other heat sensitive components are at least 6 inches away if not more which is huge when determining how much heat is being radiated. I already tested how the electrical connector on the back driver side of the valve cover can start to melt if not properly shielded.
they actually tested the cover for heat resistance? I'm not saying i dont believe you or anything like that. Just hard to believe they replacing something flammable on or in the engine vs the fire proof material. ALso they know the car will see very high heat , since it is turbo charged.
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Old Feb 9, 2011 | 01:05 PM
  #148  
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That's weird the 2010 RA has it but not the 2010 Evo
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Old Feb 9, 2011 | 01:08 PM
  #149  
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My friend has a ceramic coated tubular exhaust manifold on his 2010 X MR-T and his CAS sensor, sensor plug/harness, and valve cover all began to melt. The final solution was to use heat wrap on the runners which so far has been working very well.
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Old Feb 9, 2011 | 03:25 PM
  #150  
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Ya, I think i many need to replace my plastic cover with a metal one before tracking
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