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The 914 Center Tunnel
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Pelican Technical Article:

The 914 Center Tunnel

Dave Darling


2-3 hours






Electric grinder with sanding wheels, floor jack, jack stands, wheel chocks, safety glasses, rust remover, metal etch, primer, Rust-o-leum paint

Applicable Models:

Porsche 914 (1970-76)

Performance Gain:

See how you can repair or replace your 914's center tunnel

Complementary Modification:

Remove the center tunnel's rust, metal etch, primer and paint same
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5

This is a 914 center tunnel. It has been cut out from the donor car, and placed upside-down on a table. The picture was taken by Charlie Davis at the 2000 Mid-US Ramble. http://members.rennlist.com/914sig

In the first picture, we see a view of the tunnel from the back— the panel that is facing toward us is part of the firewall of the donor 914. The plastic fuel lines, the metal brake line, and the metal tubes for the various control cables are visible.

In the second picture, we see the rear half of the tunnel. This view is as if we were laying underneath the car, looking up, with our feet toward the nose of the car. The two curved tubes toward the left side of the picture housed the heater control cables. The next tube over (the smaller one) housed the throttle cable. The final metal tube is the Infamous Clutch Tube.

The third picture shows the middle section. You can see the front part of the heater control cable tubes, and the hole in the top of the tunnel where the heater control lever goes.

The final picture shows the front section of the center tunnel. You can see where the clutch tube attaches to the center tunnel—this seems to be the most common failure point. Also note that the forward section of the fuel lines is metal. Also on the table is a brake proportioning valve which has been disassembled.

The last three pictures, when put together, would show the whole of the tunnel. It may be worthwhile to rotate the first picture so that the tunnel is at the same orientation as the rest—or perhaps rotate the last two so they match picture #2. If you rotate that first one, you’ll have to change the text description a little bit.

Figure 5 looks forward into a center tunnel that has been cut off at the hole for the gear shift lever.


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Comments and Suggestions:
Jarret Comments: Is it a wise idea to spray a rust inhibitor down the center tunnel..
I am doing a little repair work, while my engine is out.. I want to coat everything with chassis paint.
I wanted to spray into center tunnel, what trouble could occur if any?
November 19, 2012
  Followup from the Pelican Staff: I have not done this myself and not sure of any implications.

I opened a post in our forums. A Pelican community member may be able to answer your question.
- Nick at Pelican Parts

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