993 Engine undertray
#17
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Originally Posted by ARM993
Make sure when you go into advance search you select only the 993 board for the pertinent info. Here is a link to the most recent thread on this topic that will keep you busy for the rest of the night.
https://rennlist.com/forums/showthre...ht=engine+tray
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https://rennlist.com/forums/showthre...ht=engine+tray
Chad
#18
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Originally Posted by Chad T
... Seems to almost always come down to about 50/50 for and against...
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#19
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Has anybody tried drilling holes on the Engine Undertray?? (Like Motorsound Airbox
) Do you think it's a good idea? When you think about it ; if you could just drill some holes under the places where the most heat generates... You could get both cooler running engines and good aerodynamics.
Currently, I'm running without one.
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Currently, I'm running without one.
#21
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Originally Posted by 9Nine3
Has anybody tried drilling holes on the Engine Undertray?? (Like Motorsound Airbox
) Do you think it's a good idea? When you think about it ; if you could just drill some holes under the places where the most heat generates... You could get both cooler running engines and good aerodynamics.
Currently, I'm running without one.
![Stick Out Tongue](https://rennlist.com/forums/images/smilies/tongue.gif)
![rockon](https://rennlist.com/forums/graemlins/rockon.gif)
Currently, I'm running without one.
#22
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Originally Posted by Bull
Good idea! Studies done deep inside Bavaria have found that the best size for the hole matches the outside demensions of the tray exactly!
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9,
A recent thread on this topic suggested that the aerodynamic benefits will likely only be felt at or near top speed. Not many of us spend much time a warp speed so reducing heat is a greater concern. If a person plans on extended 170+mph runs, then there are a few other mods that should come before putting the engine tray back on, like a helmet, full roll cage and harness, etc. Even then, there are few places on the planet where you could sustain that speed long enough to enjoy the aerodynamic benefit.
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#23
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Originally Posted by fbfisher
there are few places on the planet where you could sustain that speed long enough to enjoy the aerodynamic benefit. ![Cheers](https://rennlist.com/forums/images/smilies/beerchug.gif)
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1) Some covert highway in FL where there is no entry or exits.
2) NV open road challenge
3) Chernobyl region
4) Boulevard Peripherique around Paris at 2 am.
5 Highway to Las Vegas from LA.
Any I miss?
#25
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OK OK....I admit it was a stupid idea.
If I were to drill my engine tray, the only place I would've left undrilled is under the oil leak so that I'll get all the benefits : Aerodynamic, Cooler engine, Cleaner Garage Floor.
If I were to drill my engine tray, the only place I would've left undrilled is under the oil leak so that I'll get all the benefits : Aerodynamic, Cooler engine, Cleaner Garage Floor.
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#26
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Hahahahahahahaha this was a great tray thread.....better than most tray threads which just go round the same arguments......just for the record mine is off for the summer and there is a noteworthy drop in temp, but it will go back on in the winter as my car is a daily driver........
Bull......how could YOU ever come up with an excuse to make a car go faster.......and you and verified WFMR keep going slow freak??? But I did love your comment about making the holes about the exact same dimensions as the tray.....hahahahaha
Bull......how could YOU ever come up with an excuse to make a car go faster.......and you and verified WFMR keep going slow freak??? But I did love your comment about making the holes about the exact same dimensions as the tray.....hahahahaha
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I have a 110k mile modified 993 C4 that has always had the undertray on, never had any issues with the engine, the car is driven in Saudi Arabia at 110F 10 months out of 12, and I track her at least once a month, I don't have a secondary oil cooler.
I am going to remove my tray after all I have read about valve guide wear etc.. Thanks
I am going to remove my tray after all I have read about valve guide wear etc.. Thanks
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Originally Posted by dhicks
Hahahahahahahaha this was a great tray thread.....better than most tray threads which just go round the same arguments......just for the record mine is off for the summer and there is a noteworthy drop in temp, but it will go back on in the winter as my car is a daily driver........
Bull......how could YOU ever come up with an excuse to make a car go faster.......and you and verified WFMR keep going slow freak??? But I did love your comment about making the holes about the exact same dimensions as the tray.....hahahahaha
Bull......how could YOU ever come up with an excuse to make a car go faster.......and you and verified WFMR keep going slow freak??? But I did love your comment about making the holes about the exact same dimensions as the tray.....hahahahaha
#29
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ok ok...since lowering my car with the PSS9, having no tray on allows one to lift the car via a floor jack under the engine, which the mechanics love
other than that...
The engine tray was put on by Porsche to see how long we will debate this BS...and for numb nuts in FL to drive @ 170mph over gators...LOL
other than that...
The engine tray was put on by Porsche to see how long we will debate this BS...and for numb nuts in FL to drive @ 170mph over gators...LOL