I have a 71 911T that I am about to perform an engine-in fix. It is a 2.2 with Zenith carbs. Intially I was reluctant to do this as I didn't want to drop the engine. After I removed the air filter cover, I found abundant room to get to everything. I have read all the posts I can find on this. Thanks to all those that contribute this vast knowledge. I just wanted to run through the process and ask a few questions I haven't been able to find to make sure I have everything ready so I don't need to pause to get something I forgot.
First, my triangle of death (and I believe all 2.2's) consists of the crankcase breather cover, the oil thermostat, and the oil pressure sending unit. My car does not have a oil pressure switch. The picture above is not my car (borrowed it from #Copper) but is exactly the same. I plan to clean everything up prior to removing anything to avoid things falling in the holes.
Crankcase breather cover questions:
1. There appears to be nylock nuts on there. Would you recommend replacing these with new ones?
2. Would you recommend using just a very light coating of gasket sealer on the gasket such as Permatex Red RTV Silicone?
3. I have down 8.2 ft-lbs for the nuts. Is this correct?
I plan on replacing the crankcase breather hose as well
Oil Thermostat questions:
1. Is there a torque spec on the nuts or just tight enough?
I plan on using the green porsche O-ring. I have read some people have difficulty removing the thermostat housing. I have read about different removal techniques including the mini crowbar. Hopefully is comes out easy enough.
Oil Pressure Sending Unit questions: Mine is mounted on a Reducer/Adapter Fitting. I believe it is the same one that the oil pressure switch is mounted on in later cars. There is a crush washing between the reducer/adapter fitting and the engine case. The Oil Pressure Sending Unit does not come with a trapped washer like the Oil Pressure Switch (used in later cars not mine) which appears to use the same reducer/adapter fitting as my car uses for the Sending Unit.
1. Can I reuse the Oil Pressure Sending Unit and Reducer/Adapter Fitting and just replace the washers?
2. Is the Crush washer between the Adapter fitting and the case Part #: 900-123-140-30-M17, 18x22mm?
3. Is there a washer that goes between the Adapter and the Oil Pressure Sending Unit such as that used in those cars with a Oil Pressure Switch? If so what is the size?
4. Is Teflon tape on the threads of the Adapter and Sending unit recommended?
5. Is Loctite 574 on both sides of the washer between the Adapter and case and the Sending Unit and Adapter (if there is a washer here) recommended?
6. I have torques of 26 ft-lbs for the Adapter and 14.6 ft-lbs for the Oil Sending Unit.
Thanks for all the feedback in advance. I really love this community!!
Jeremy