Gasoline in the shift tunnel

[Vintagemotion]

I have gasoline in the shift tunnel. Is there any rubber lines / connectors inside the shift tunnel that can leak. Steel lines cracked / corroded? Any suggestions?

[BReyes]

Have you looked in from the access panel under the carpet in the rear floor? Fuel is corrosive. Does the front area underneath look wet too?

Goodluck. Great you caught that early.

Regards,

[Vintagemotion]

It is wet by the shift coupling inside the tunnel in the rear. I had just replaced all soft fuel lines some weeks back. No leaks until today.

[BReyes]

Have you doubled up/tightened the rubber hose clamps again? Any abrasion from axle? How about at connection?

[James Brown]

Rolf, I think there are rubber fuel lines inside the steel tubes running from the fuel tank through the tunnel to the engine. Time to pull them out and replace them.

[Vintagemotion]

Problem found! Warning to anyone that is installing a seat and or is re-tapping the threads to mount the seat: The fuel lines run in a small channel inside the tunnel directly !! under the tapped holes for the driver seat. Do not use mounting bolts that are longer than original. Anything protruding past the end of the thread inside that channel can damage the lines, immediately or over time!!!

[bkreigsr]

nice find
I almost did the same thing when I put later seats in my 73.
Bill K

[gtc]

Also watch out if you're welding on the tunnel / floorpans. BTDT!
"Hmm.... that paint seems more flamable than normal... wait a sec... oh crap!"

[911pcars]

These images are required for every owner before drilling into the tunnel.





Sherwood

[Vintagemotion]

Can the lines be replaced by non metallic rigid PVC lines?

Replacing metal fuel lines on early 911

[911pcars]

Originally Posted by Vintagemotion

Can the lines be replaced by non metallic rigid PVC lines?

Replacing metal fuel lines on early 911

I'm assuming PAG made these interior fuel lines out of rigid steel tubing for a safety reason. That said, as long as the fuel line is fuel-proof (won't melt or deteriorate), then that's your choice.

However, don't mickey-mouse the replacement. I've had the metal brake line in the tunnel chafe and spring a leak from rubbing either the throttle or brake cable. What material would provide better protect inside the tunnel?

Sherwood

[Vintagemotion]

Originally Posted by 911pcars

However, don't mickey-mouse the replacement. I've had the metal brake line in the tunnel chafe and spring a leak from rubbing either the throttle or brake cable. What material would provide better protect inside the tunnel?

Sherwood

Mikey-mousing wasn't the intend - actaully I wanted to improve this for corrosion

Porsche uses PTFE lines on later 911's Replacing metal fuel lines on early 911

[RWebb]

if the routing and protection is the same, that should be fine

but aren't the lines routed in a completely separate conduit area BELOW the cabin on the 996/7?

they might have used them to lower costs, too