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underbody engine cover

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Old Apr 8, 2006 | 04:39 PM
  #1  
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Default underbody engine cover

Is it recommended to remove the cover under the engine ?I have heard both pros and cons!thanks I'm a new member trying to get started w/everybody!
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Old Apr 8, 2006 | 04:49 PM
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Pros are better cooling but the big con if you live in the snowbelt is getting salty water off the road all over the engine.
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Old Apr 8, 2006 | 05:52 PM
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I have always been worried about something bounching up and hitting the engine.Like a rock into an oil return tube.What about trimming it down and just exposing the exhaust system?That should allow a fair amound of heat out.

Jeff 1990 C2 Coupe White/Burgundy
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Old Apr 8, 2006 | 06:04 PM
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Nice car by the way, with or with out the under tray...
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Old Apr 8, 2006 | 06:27 PM
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Last week I ran my undertray on my race car during the weekend of racing at California Speedway which is a big track (=fast). With 70 degree air temps (likely much warmer on the pavement of the track) the engine oil temps were fine even during a longer 30 minute sprint race, and I was driving the crap out of the car. It never felt better going 145 mph through turns 1 and 2 (better aero stability, maybe?)! Next time I'll try even faster!!!

I'm one of the pro-undertray folks: better aerodynamics & protection, vs. the often claimed but unproven link of the undertray causing heat damage to the engine. You'd think that by the time the 993 came out Porsche would get rid of it, if it was truly a destructive piece. But that's my opinion!

Fabulous car, and welcome.
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Old Apr 8, 2006 | 07:24 PM
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Mike, I really like that color!

Saw another member here (think he is in France) with the same color AFTER I bought mine. My next one will be that green.
Very nice car. Did you add the tail?
Oh, and there are lot's of posts regarding that undertray. Some entertaining reading if you get a couple of hours to search the forum and read the posts. Quite the debate. Here's one: https://rennlist.com/forums/showthre...ferrerid=35947

Welcome!
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Old Apr 8, 2006 | 10:32 PM
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The previos owner added the TechArt biplane spoiler.The color is Oak green metallic. Thanks, Does anyone know how to become a member instead of a user,not sure? Thanks,
Mike Lowry.
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Old Apr 8, 2006 | 11:02 PM
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Originally Posted by Mike Lowry
Does anyone know how to become a member instead of a user,not sure?
Try here.

The cost is small, the benefits are immense.

Car looks great - is that a TechArt front spoiler?

Marc
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Old Apr 8, 2006 | 11:12 PM
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964 and 993 cup cars did not have the undertray. i would think if it was an aero advantage they would have left them on.
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Old Apr 9, 2006 | 01:33 AM
  #10  
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911s from 89 on back never had and undertray, so if rocks or junk bouncing up into the engine compartment was going to be a problem I think many 911 owners would know about that. I have always heard that the engine tray was for noise requirment issues in certain countries and that it was on all cars because they facotry was building one model for the world at that time.

Ditto biere: if the factory race cars did not use the tray then it must not have been an aerodynamic benefit.
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Old Apr 9, 2006 | 01:41 AM
  #11  
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Originally Posted by bgiere
964 and 993 cup cars did not have the undertray. i would think if it was an aero advantage they would have left them on.
Porsche did obtain a patent for the aerodynamic design of the undertray...

...and without airjacks in the 90's (at least on the cup cars), it's a pain to jack a car with that tray on.
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Old Apr 9, 2006 | 10:02 AM
  #12  
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Originally Posted by Marc Shaw
Try here.

The cost is small, the benefits are immense.

Car looks great - is that a TechArt front spoiler?

Marc
Hey Marc,the front spoiler is from Windward Performance Products in Putney VT Lower Daytona spoiler they call it
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Old Apr 9, 2006 | 10:29 AM
  #13  
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Yes, beautiful color
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Old May 17, 2006 | 05:10 PM
  #14  
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Default Really like that color

That makes 3 of us here....
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Old May 17, 2006 | 06:03 PM
  #15  
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Originally Posted by garrett376
Last week I ran my undertray on my race car during the weekend of racing at California Speedway which is a big track (=fast). With 70 degree air temps (likely much warmer on the pavement of the track) the engine oil temps were fine even during a longer 30 minute sprint race, and I was driving the crap out of the car.
I would think the heat problem is more pronounced at low speeds. In traffic, for example. That's when my car runs the hottest.
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