Group B 930

Porsche 911 Thermostat Oil Line Replacement

Step 1 - Cut Front Oil Line

Oil Lines/Thermostat Cut with Grinder Oil Line Cut

Be sure to DRAIN the oil first. There are two lines here that connect to the thermostat housing. Cut the front line with a grinder. WATCH OUT for the flying oil. Wear a pair of safety glasses.

Step 2 - Cut Slot in Oil Line Nut

Cut Slots w/ Grinder Remove Nut

With a grinder cut slots down each side (BE CAREFUL not to cut into the thermostat housing threads) and across the top of the nut (AGAIN, BE CAREFUL not to cut into the thermostat housing). With a big flat screwdriver or small pry bar, twist and pry the nut across the top slot of the nut. Notice, we just touched the threads of the housing, but all was OK.

Step 3 - Remove Rear Oil Line

Cut Line & Slot Nut Remove Rear Nut

Now that the front oil line is out of the way, you can remove the rear oil line the same way you removed the front oil line.

Step 4 - Attatch New Oil Lines

New Oil Lines

Cleaned up the housing and to ensure no leaks, we dressed the threads with a little sealant. Nothing too aggressive. Saved the housing (expensive) and our knuckles.