What oil line is this? 3.0 engine in 2.7 car

[Blamecanada]

As the title says I’m looking for help figuring this out. The crossover has a hose barb on it and the hose as installed was secured with two hose clamps. Didn’t look factory to me. The rubber part attaches to the 180 degree turn to top of thermostat in passenger wheel well.

The hose barb does not look like it’s brazed on to the hard line. Any help would be appreciated.

[Flat6pac]

Oil scavenge line to the cooler or the the filter. Used with SSI or early heat boxes, or thermal reactors. The pictured one is very early where the rubber hose goes to the oil tank. The correct one for a 2.7 would be to a coupling before the curve
Bruce

[Blamecanada]

Thanks for the response. Should have been clearer. It is a 3.0 engine pictured. I have heard of thermal reactors. Just don’t know what they look like. The car doesn’t have SSI. Looks like heat boxes?

[Blamecanada]

Should say it definitely is going to the cooler.

[Flat6pac]

Early heat boxes, much like SSIs but mild steel and 40 years on the road
Bruce

[Blamecanada]

Exactly what I have. Mild steel. Have the engine pulled and repairing the heat boxes is on the list. I have the hose issue figured out now. Going to make my own using the proper hose for oil. Don’t think the hose installed is correct for oil.

Thanks for the feedback Bruce.

[Flat6pac]

Reconsider your position
The early 2.2 crossover has a smaller diameter than 3.0
Proper parts are
911 107 739 10. Cross over
911 107 729 10 connection to the thermostat
You probably need the proper adaptor on the side of the case to connect the pipe because of the one there is for the smaller line
Didn’t see the number in the PET for it
Bruce
Bruce

[Blamecanada]

Thanks for the help. Going to dig deeper into engine. Chasing oil leaks. Fix heater boxes etc and will order all my parts at once. Going with your numbers to my local Porsche dealer for some help. My main task is fixing transmission. Needs some live ha ha.

All the best in the New Years!!

[BoxsterGT]

What you have is original to a 73-74 911. It is a Cross-UNDER line from engine DIRECTLY to the Oil Tank. It is 30mm. The hose barbs are intended for Crimp Sleeves as this......



On yours, someone made a bogus repair with the wrong Hose and used Clamps instead of Crimp Sleeves.

Here is what I made up for a customer with a restored 73 911....



It is the same part you show on your motor but Re-Plated and Re-Hosed.

If you have a Front Oil Cooler w Thermostat, then you need a totally different Cross-UNDER line. I will look this up and post a photo.

Len dot Cummings at verizon dot net

[Walt Fricke]

Is this forum a great resource or what? I figured you have an engine in a car with no front oil cooler, given that the hose barb was pointing to the back, not the front.

Bruce figured that, and Len gives you a picture.

But you might want to think about converting to Porsche's external oil thermostat, hard lines up to the right front fender ahead of the wheel, and adding an oil radiator there. I think every 3.0 Porsche put in these cars, starting with 1976 in Europe?, had an external cooler to assist the engine mounted one.

[chrismorse]

If you plan to drive the car hard, or in a hot climate, particularly with AC, your engine needs a front cooler, or it will not last, (read VERY expensive repairs).
My dad's stock 74 had AC and no front cooler and ran insane oil temps in the mild Santa Barbara coast climate, driven gently. A year earlier, he had Schneiders do a $11,500 top end overhaul.
My first move on inheriting the car was to fix a minor fuel leak, dump the AC and install some used lines and a new thermostat with an85 cooler.

Good luck,
Chris

[Blamecanada]

Thanks Len, Chris and Walt. This forum is great! Taught me lots.

The car does get driven hard. AC is removed and it does have its factory front oil cooler. Looks to be a bit of a cross between a mutt and a midnight repair.

I’m back on track now and thanks for all the advice.