Engine/Transmission (1998.5 - 2002) need type of thread and thread sizes please

[rweis]

2002 3500 auto



I am going to put in a pressure port into the transmission crossover line in addition to the port that comes with the replacement line (that port will have a temp sensor in it)



1. The crossover line to the water heat exchanger for the replacement DC line with the rubber short piece and the one way check valve. I THINK that it is a -8 AN at the crossover end by the rubber extension piece? What is it at the water heat exchanger end? -8AN? Summit has a -8 AN / -8 AN port that would work fine, but is -8 AN / -8 AN RIGHT? I know that I will still need to extend the sensor adapter about 3 " to make up the difference in total length.



I want to put in a temp sensor into the engine oil system. I am going to put in a pressure sensor at the top of the oil filter where the 1/8 NPT plug is. I am thinking about putting in a port in the turbine oil cooler line and putting a temp sensor in there.



2. What kind of fitting is at the oil filter end of the turbine oil cooler line? What kind of thread is the thread that is in the filter housing itself that goes to the fitting of the braided turbo cooler line? What kind of thread is the thread at the turbine end of the turbo oil cooler line at the end of the braided oil cooler line? Summit has a -8 AN / -8 AN with a port and also a -6 AN / -6 AN with a port if either of these would work. Is there a better place to get engine oil temp that has a good flow at the sensor location? I know engine oil temp will be within 20 degrees of engine water temp, but I still want to measure it anyway to compare what the DC panel gauges read.



Thanks, and Merry Christmas to ALL



Bob Weis

 

[rweis]

Someone must know something about these fittings.



Thanks in advance,



Bob Weis

 

[Whitmore]

2. What kind of fitting is at the oil filter end of the turbine oil cooler line? What kind of thread is the thread that is in the filter housing itself that goes to the fitting of the braided turbo cooler line? What kind of thread is the thread at the turbine end of the turbo oil cooler line at the end of the braided oil cooler line? Summit has a -8 AN / -8 AN with a port and also a -6 AN / -6 AN with a port if either of these would work. Is there a better place to get engine oil temp that has a good flow at the sensor location? I know engine oil temp will be within 20 degrees of engine water temp, but I still want to measure it anyway to compare what the DC panel gauges read.





These are NPT at the housing ends.



cheers, Kevin

 

[jrobinson2]

The fittings on the oil line to the turbo are #6 o-ring face seal.

AN fitting sizes are in 1/16", #6 = 6-1/16" or 3/8"



Jared

 

[rweis]

Thanks,



Let's see if I have this right,



The An is 6 therefore 3/8 NPT in the filter head,



Then it goes to a o ring face seal (I wonder why they used that specifically? maybe to facilitate installation?)



Then it would go to a AN 6 into a 3/8 NPT at the turbine end.



Thanks ever so much, that makes it relatively easy.



Just figuer out what AN fittings to do what I want, not high pressure only 100psi, not especially high temp fluid 300 degree hose should do that, high temp environment at the turbo end, stainless steel brade should do that (and I will check with a hydraulic shop to ensure the modifications will handle the environment)



I just LOVE TDR

Merry Christmas



Bob Weis

 

[jrobinson2]

Filter 3/8NPT to#6 face seal O-ring-----------#6 face seal O-ring to 3/8NPT on turbo.



Face seal o-ring on both ends of the turbo hose, no AN anywhere. Face seal fittings are very nice to work with, they seal very well W/O over tightening and start easier than flare or O-ring boss fittings when they are slightly misaligned. The number in 1/16 designations (#4 #6 #8 ect. )apply to most SAE fittings, 37* flare/ NPT/ face seal O-ring ect. The reason the adapters are used is you need a swivel on at least one end of the hose and pipe threads are not convenient for repeated assembly/ disassembly and can be difficult to seal completely with oil. IMO the face seal fittings are better than the AN/SAE 37* flare but fairly new style and harder to find parts for, any good hydraulic shop should be able to make a hose for AN/37* flare and new 3/8 NPT x AN/37* flare #6 adapters, or find adapters (3/8 NPT run Tee?) and use the old hose. Always use hydraulic NPT fittings in oil applications not galvanized, the galvanized can shed debris into the oil.





Jared