SCMomentum

Ummmm...not really.

Chad T

This subject has been beaten to death on the 964 board too. If you vary your search (undertray, belly pan etc.) You'll find more info than you can imagine. I spent hours one night reading undertray threads. I still have mine on but have been thinking about just removing the sides and leaving the bottom on for aero/protection like Garret on the 964 forum has done. Seems to almost always come down to about 50/50 for and against. Hard for me to decide even after reading all the posts but it's on for now.

Chad

fbfisher

Really? I thought this issue was settled a long time ago. All gurus and those of us that follow them agree that the tray must come off, particularly if you drive your car in a warm climate.

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.

993RS

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!

fbfisher

Now that is the funnist thing I've read on RL in a long time!

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.

tj90

I can think of a few:
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?

brucec59

The holes should be drilled directly under the oil leaks.

9Nine3

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.

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

Jean

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

Bull

You must look more closely.....I was attempting to make others' cars faster, thereby protecting myself and other HWFM Racing member's from any embarrasing moments!

hawk993

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

tj90

The tray should stay off for the lazybones on the board. As for Jean, why would you take it off now? Your post is reason enough to leave it on.