Front-to-Rear Fuel Lines - SC
Thread Starter
Racer
Joined: Aug 2012
Posts: 300
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From: Hixson, TN
Front-to-Rear Fuel Lines - SC
Again.
It was a frustrating day wrenching on these things. The pressure line extracted without issue and the new line pulled back in the same way. So I thought I was halfway home free. Not so.
The return line will pull about 14 - 16 inches, then just stops. Like it ran into a wall. Measuring from the rear of the tunnel foward this put the obstruction or whatever in an area that is neither visible (from either the shift coupler opening on the handbrake/heater control assembly opening) nor accessible to do anything about whatever it is if you could see it.
I have several ideas about this. One is to cut the 90 degree bend off the line in the front and pull it from the back, pulling a "fish tape" along with it. Then using that line to pull another line from back to front to use in trying to pull return line in from the front.
Or there's the "discretion is the better part of valor" route of just running a return line outside of the tunnel, alongside the A/C line on the driver's side of the car. This would definitely be the fall back strategy if the the paragraph above doesn't work.
Other ideas?
It was a frustrating day wrenching on these things. The pressure line extracted without issue and the new line pulled back in the same way. So I thought I was halfway home free. Not so.
The return line will pull about 14 - 16 inches, then just stops. Like it ran into a wall. Measuring from the rear of the tunnel foward this put the obstruction or whatever in an area that is neither visible (from either the shift coupler opening on the handbrake/heater control assembly opening) nor accessible to do anything about whatever it is if you could see it.
I have several ideas about this. One is to cut the 90 degree bend off the line in the front and pull it from the back, pulling a "fish tape" along with it. Then using that line to pull another line from back to front to use in trying to pull return line in from the front.
Or there's the "discretion is the better part of valor" route of just running a return line outside of the tunnel, alongside the A/C line on the driver's side of the car. This would definitely be the fall back strategy if the the paragraph above doesn't work.
Other ideas?
Rennlist Member
Joined: Oct 2007
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From: wash dc/ los angeles ca
I have done this at least with a Carrera, I'm reasonably sure the SC uses a similar set up, There is a hard rubber seal at each end which includes a threaded bung or connection once this is removed the entire line will fall out basically.
This is a high pressure plastic line both for supply and return , pretty sure it changed from steel back
in mid seventies at least '77.
Bert
This is a high pressure plastic line both for supply and return , pretty sure it changed from steel back
in mid seventies at least '77.
Bert
I haddah Google dat
Rennlist Member
Rennlist Member
Joined: Nov 2008
Posts: 11,501
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From: Fresno, CA
Make sure that the metal tabs are not pinching the line and that the rubber insulators stay on said metal tabs. Try pushing and pulling the line through the tunnel. It'll come out.
Thread Starter
Racer
Joined: Aug 2012
Posts: 300
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From: Hixson, TN
The rubber grommets are accounted for. I also found one of those "bend around" metal strips holding both lines at the front (at the hole over the cruise control switch) but I've already bent it out of the way.
I'm not through playing with this, but if it gets too hopeless I'm goiing to consider an alternate route for the line. I wouldn't run a return line through the cockpit, but I would consider running it along the bottom of the car alongside the A/C line behind the rocker panel. I see nothing wrong with that location, lots of cars without central tunnels have been using locations like that for years. But I also realize Porsche isn't "lots of cars."
Too bad Porsche didn't make the bottom of the tunnel removable so you could easily access everything inside, a la Corvair.
I'm not through playing with this, but if it gets too hopeless I'm goiing to consider an alternate route for the line. I wouldn't run a return line through the cockpit, but I would consider running it along the bottom of the car alongside the A/C line behind the rocker panel. I see nothing wrong with that location, lots of cars without central tunnels have been using locations like that for years. But I also realize Porsche isn't "lots of cars."
Too bad Porsche didn't make the bottom of the tunnel removable so you could easily access everything inside, a la Corvair.
Thread Starter
Racer
Joined: Aug 2012
Posts: 300
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From: Hixson, TN
No, I did not take the shifter out; I didn't know there was another "bend around" there. (It's interesting about those bend arounds; the thread(s) I found on doing this mentioned those not at all.) In any case that one didn't give me any trouble with the pressure line at all. I may have to end up doing that, but as a last resort. I have another strategy in mind first.
