Notices
964 Forum 1989-1994
Sponsored by:
Sponsored by:

underbody engine cover

Thread Tools
 
Search this Thread
 
Old 04-08-2006, 04:39 PM
  #1  
Mike Lowry
Advanced
Thread Starter
 
Mike Lowry's Avatar
 
Join Date: Apr 2006
Location: Canton, Ohio - Hall of Fame city.
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
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!
Attached Images        
Old 04-08-2006, 04:49 PM
  #2  
Rick964
Burning Brakes
 
Rick964's Avatar
 
Join Date: May 2001
Location: San Diego, CA
Posts: 823
Likes: 0
Received 2 Likes on 2 Posts
Default

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.
Old 04-08-2006, 05:52 PM
  #3  
jeff522
Racer
 
jeff522's Avatar
 
Join Date: Mar 2006
Location: Joplin, Mo
Posts: 345
Likes: 0
Received 0 Likes on 0 Posts
Default

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
Old 04-08-2006, 06:04 PM
  #4  
pete000
Three Wheelin'
 
pete000's Avatar
 
Join Date: Dec 2003
Location: Rancho Palos Verdes CA
Posts: 1,569
Likes: 0
Received 2 Likes on 2 Posts
Default

Nice car by the way, with or with out the under tray...
Old 04-08-2006, 06:27 PM
  #5  
garrett376
RL Community Team
Rennlist Member
 
garrett376's Avatar
 
Join Date: Oct 2003
Posts: 7,435
Received 615 Likes on 471 Posts
Default

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.
Old 04-08-2006, 07:24 PM
  #6  
MarkD
Rennlist Member
 
MarkD's Avatar
 
Join Date: Sep 2005
Location: Still here...
Posts: 6,962
Received 3 Likes on 3 Posts
Default

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!
Old 04-08-2006, 10:32 PM
  #7  
Mike Lowry
Advanced
Thread Starter
 
Mike Lowry's Avatar
 
Join Date: Apr 2006
Location: Canton, Ohio - Hall of Fame city.
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default

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.
Old 04-08-2006, 11:02 PM
  #8  
Marc Shaw
Super Duper Moderator
Lifetime Rennlist
Member
 
Marc Shaw's Avatar
 
Join Date: Nov 2004
Location: YQU
Posts: 7,774
Likes: 0
Received 15 Likes on 13 Posts
Default

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
Old 04-08-2006, 11:12 PM
  #9  
bgiere
Rennlist Member
 
bgiere's Avatar
 
Join Date: Oct 2003
Location: in a racecar somewhere...
Posts: 3,375
Received 51 Likes on 42 Posts
Default

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.
Old 04-09-2006, 01:33 AM
  #10  
Rick964
Burning Brakes
 
Rick964's Avatar
 
Join Date: May 2001
Location: San Diego, CA
Posts: 823
Likes: 0
Received 2 Likes on 2 Posts
Default

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.
Old 04-09-2006, 01:41 AM
  #11  
garrett376
RL Community Team
Rennlist Member
 
garrett376's Avatar
 
Join Date: Oct 2003
Posts: 7,435
Received 615 Likes on 471 Posts
Default

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.
Old 04-09-2006, 10:02 AM
  #12  
Mike Lowry
Advanced
Thread Starter
 
Mike Lowry's Avatar
 
Join Date: Apr 2006
Location: Canton, Ohio - Hall of Fame city.
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default

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
Old 04-09-2006, 10:29 AM
  #13  
boubi
Instructor
 
boubi's Avatar
 
Join Date: Aug 2005
Location: Paris/france
Posts: 154
Likes: 0
Received 0 Likes on 0 Posts
Default

Yes, beautiful color
Old 05-17-2006, 05:10 PM
  #14  
Idoktr
Rennlist Member
 
Idoktr's Avatar
 
Join Date: Aug 2001
Location: Boston,MA
Posts: 532
Received 54 Likes on 22 Posts
Default Really like that color

That makes 3 of us here....
Old 05-17-2006, 06:03 PM
  #15  
dfinnegan
Drifting
 
dfinnegan's Avatar
 
Join Date: Jul 2005
Location: NY, USA
Posts: 3,363
Likes: 0
Received 24 Likes on 24 Posts
Default

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.


Quick Reply: underbody engine cover



All times are GMT -3. The time now is 08:01 AM.