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Pelican Technical Article:

Under Engine Trays

Steve Vernon

Time:

30 minutes30 mins

Tab:

$0 to $1,000

Talent:

*

Tools:

10mm socket, Philips screwdriver

Applicable Models:

Porsche 993 Carrera (1995-98)
Porsche 993 Carrera 4 (1995-98)
Porsche 993 Carrera 4S (1996-98)
Porsche 993 Carrera S (1998)
Porsche 993 Targa (1996-98)
Porsche 993 Turbo (1996-97)

Hot Tip:

Watch for fluid on the inside of the trays

Performance Gain:

Proper aero

Complementary Modification:

Give the engine a good cleaning

The under body trays on most modern cars are used not only to protect the systems from road debris and weather but also to manage the air flow under and around the vehicle. The Porsche 993 is no exception. You will need to remove these trays to get access to most of the work you will want to perform underneath the vehicle. It is always a good idea to order a set of proper fasteners for your under trays. The fasteners are easy to misplace and once you get under the vehicle there will be a good chance some of yours are missing or previous owners have used improper hardware. Servicing the under trays might not seem like a glamorous job but they serve an important function and having matching correct hardware makes removing and installing them much easier. Also be prepared to hit the fasteners with some penetrating oil as the non-plastic ones due tend to rust.

Over the years your car may have been serviced by multiple people including previous owners and this can lead to parts replaced with different size fasteners and hardware. The sizes of the nuts and bolts we give may be different from what you have so be prepared with different size sockets and wrenches. If something is different on your vehicle please let us know and share your info to help other users. If you have any questions or comments or even a different procedure you would like to share please leave it below and please leave your vehicle information.

Begin by safely jacking up and supporting your car. Please see our article on safely jacking up and supporting your 993.

The engine protection panel is a hard plastic piece held in place by a series of Philips head screws.
Figure 1

The engine protection panel is a hard plastic piece held in place by a series of Philips head screws. While there have been complaints that the engine tray causes the motor to run hotter and that lots of people take them off and leave them off we are going to leave that decision up to you. We have removed the rear bumper in this picture but you do NOT need to do that to remove the tray. Use a Philips head screwdriver and loosen the three lower screws (red arrows) they will stay in the panel once loosened.

There is also a screw up behind the mufflers on each side that you will need to remove (red arrow).
Figure 2

There is also a screw up behind the mufflers on each side that you will need to remove (red arrow).

You can now lower the tray straight down.
Figure 3

You can now lower the tray straight down. Use care here. Depending on where you live and the condition of the motor, the tray can have dirt, debris and oil in it.

The transmission protection panel is also removed by using a Philips screwdriver and loosening the five screws (red arrows).
Figure 4

The transmission protection panel is also removed by using a Philips screwdriver and loosening the five screws (red arrows).

The front of the panel sits in four grommets in the cross-member (red arrows), you will need to pull the panel back and out from these to remove it.
Figure 5

The front of the panel sits in four grommets in the cross-member (red arrows), you will need to pull the panel back and out from these to remove it. Again, check for dirt and fluids before dropping it.

Next are the two splash shields; one forward of the transmission (yellow arrow) and one on the center tunnel (red arrow).
Figure 6

Next are the two splash shields; one forward of the transmission (yellow arrow) and one on the center tunnel (red arrow). These are held in place by a series of 10mm plastic nuts. There is also a protective panel for the fuel filter (blue arrow).

If you are removing the rear splash shield make sure that when you support the vehicle by the support bracket (red arrow) it is clear of the panels.
Figure 7

If you are removing the rear splash shield make sure that when you support the vehicle by the support bracket (red arrow) it is clear of the panels.

To remove the forward panel that protects the steering and brakes you will again need a 10mm socket as it is held in place by a series of 10mm plastic nuts and metal bolts (red arrows).
Figure 8

To remove the forward panel that protects the steering and brakes you will again need a 10mm socket as it is held in place by a series of 10mm plastic nuts and metal bolts (red arrows).

The rear of the panel sits in the center tunnel panel and you will need to pull the panel forward to fully remove it.
Figure 9

The rear of the panel sits in the center tunnel panel and you will need to pull the panel forward to fully remove it.

With the panel off you have clear access to the systems underneath it.
Figure 10

With the panel off you have clear access to the systems underneath it.

The fuel filter panel is held in place by a series of 10mm nuts and bolts (red arrows).
Figure 11

The fuel filter panel is held in place by a series of 10mm nuts and bolts (red arrows). It can be removed without removing any of the other panels.

With the hardware removed tilt the panel down and pull it back and out from the front panel.
Figure 12

With the hardware removed tilt the panel down and pull it back and out from the front panel.

You now have access to the fuel filter without removing any other panels.
Figure 13

You now have access to the fuel filter without removing any other panels. All of the panels' installation is the reverse of removal.

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Page last updated: Tue 8/15/2017 03:24:25 AM