Oil cooling/crushed lines

[bcoats]

Hey fellow Pelicans - seeking advice for some perpetual Porsche paranoia. . .I have a '79 911SC, live in the PNW, hard oil lines are crushed pretty good from prior owner, however when hot I am getting flow to the trombone cooler.

My temps never get to the mid-hash mark on my temp gauge, even with spirited driving in 85 degree weather believe it or not.

Should I worry about fixing the lines? I realize tracking the car would be an issue and may add an oil cooler down the road but for now not sure I do anything, unless the experts think I should fix the lines?

Thanks for any suggestions/advice. Bryce

[Dave Colangelo]

Im sure you will end up fixing them eventually but to that point I will say this. My lines are lightly crushed from PO's jacking the car incorrectly. I also never run above where I should in terms of temps. My logic has always been that although lightly crushed the total cross sectional area at any given point of the lines did not really change and thus the amount of oil they can flow has not changed. Im sure people will disagree here but I have always felt that I get enough oil flow for it to not be an issue. If you are getting flow and not over heating there is no rush to change them. The only real issue I see is the weakening of the metal.

Regards
Dave

[bcoats]

Good points Dave, I appreciate that, that's my take on it as well. If/when I fix them then do a cooler at that time.

[86 911 Targa]

I repaired mine by using copper plumbing pipe from the Home Depot.

[porsche930dude]

Originally Posted by 86 911 Targa

I repaired mine by using copper plumbing pipe from the Home Depot.

i did that aswell but i did it when i did the cooler. the major thing is the fittings on the thermostat. if youre afraid of stripping the threads you can cut off the fittings and replace them since youll be cutting the lines apart anyway. sounds like youre alright for now. no reason to fix it really unless your overheating

[Targalid]

Crushed hard oil lines can be repaired with gentle heat (propane torch) and an air compressor. That's how I did mine. Worked great, made them look like new. This is the guy I copied:
Fixed my Crushed Oil line for $5 and a beer.

[bcoats]

Thanks guys, good stuff. . .

[86 911 Targa]

Originally Posted by Targalid

Crushed hard oil lines can be repaired with gentle heat (propane torch) and an air compressor. That's how I did mine. Worked great, made them look like new. This is the guy I copied:
Fixed my Crushed Oil line for $5 and a beer.

I'm sure this has worked for some folks, however, I see it as a very dangerous
approach compared to some 3/4 copper plumbing for the outside, and 1/2 copper plumbing for the inside.

Thermostat/oil cooler hose alignment can be a bit tricky.

Gerry

[Josh D]

It would drive me nuts knowing I had crushed oil lines, even if I wasn't having cooling problems. I would fix them. Be careful at the thermostat end. It is aluminum and the threads have been known to break off. Use anti seize when you reassemble.

[gtihop]

i repaired mine with a propane torch and air pressure. Was very easy and worked very well 4 years ago!