2004 Cummins 4BT Swap - 5-Speed Tremec 4050 - NP 205
- Thread starter Gunnersmate
- Start date
Well when it rains it pours, found a crack in the T-Case Shift Fork
Already ordered another one. Glad I saw this before complete assembly
Here's an article comparing the NV4500 & TR4050.
https://www.motortrend.com/how-to/n...bRXp1dBrF1dvPcrmVuBvhC4aiEfffaRzAbHVgGJCaKPNL
https://www.motortrend.com/how-to/n...bRXp1dBrF1dvPcrmVuBvhC4aiEfffaRzAbHVgGJCaKPNL
I have read that write up pretty informative helped me decide on the TR 4050
I could be entirely wrong, but when I looked into the TR4050 for my Rubi, it would have added another 2-3" to the drivetrain which would be a no go for rear driveshaft. It seems to me an excellent solution for the TJ if it would fit. I know SST installed one on a TJ but I couldn't get answers from them on the overall length and fit of their driveshaft. Again, I could have completely misunderstood. It would be nice to know if I am wrong...
The 231 and 241 T-Case are pretty Long the 231 comes in around 21 inches, The Np 205 T-Case with the Advanced Adapters (Adapter) comes around 12-13 inches also I think the Rubi has a six speed case not sure of the dimensions vs the 5spd vs the Tremec 4050 I know for a fact my Trans-Trans to T-case Adapter and the T-case have a shorter overall length than the Factory 5spd and 231 T-case. when I get the full drive train bolted together and on the engine test stand and the Jeep Tub off the frame I will Pull and post as many critical measurements as I can for both drive trains
Just an FYI for anyone interested Ford Married NP 205 my Purchase and rebuild costs
Purchased NP 205 for 500.00
Master Rebuild Kit for 150.00
2 new Shift Rails for 150.00
2 new sliding collars for 130.00
1 new shift fork for 80.00
NOTE: worn and damaged Shift Forks and Sliding Collars result in the Transfer Case popping out of gear under load, it is way easier to replace these items while it torn down now rather than after installing under your ride.
All new Bolts 30.00
Misc Specialty Tools 200.00 Idler Dummy Shaft and Outer shaft snap ring pliers and a NP 205 T-case manual, NOTE: the Idler Dummy shaft is a must have for easy assembly and bearing shim set up, you will also need Bearing Race and seal drivers I already had a set of Matcos from other projects and misc taps for chasing threaded holes
Misc Consumables
3 cans of brake cleaner
1 can of black rustoleum
1 can of primer
1 tube of gasket silicone
1 roll of blue masking tape
1 bottle of 242 thread locker
Clean Rags
Bead blasting ( done in my own cabinet)
probably about 1100.00 to 1200.00 if you do all the work yourself (includes sourcing a T-case for 500.00)
NOTE I do not count purchasing tools in my rebuild costs
Project Difficulty out of 5 is about a 2-3 if you have any mechanical aptitude at all.
If you reach for the Vise Grips, Pipe wrench and a ball Peen Hammer for every repair you probably should pay some one to do this rebuild
Purchased NP 205 for 500.00
Master Rebuild Kit for 150.00
2 new Shift Rails for 150.00
2 new sliding collars for 130.00
1 new shift fork for 80.00
NOTE: worn and damaged Shift Forks and Sliding Collars result in the Transfer Case popping out of gear under load, it is way easier to replace these items while it torn down now rather than after installing under your ride.
All new Bolts 30.00
Misc Specialty Tools 200.00 Idler Dummy Shaft and Outer shaft snap ring pliers and a NP 205 T-case manual, NOTE: the Idler Dummy shaft is a must have for easy assembly and bearing shim set up, you will also need Bearing Race and seal drivers I already had a set of Matcos from other projects and misc taps for chasing threaded holes
Misc Consumables
3 cans of brake cleaner
1 can of black rustoleum
1 can of primer
1 tube of gasket silicone
1 roll of blue masking tape
1 bottle of 242 thread locker
Clean Rags
Bead blasting ( done in my own cabinet)
probably about 1100.00 to 1200.00 if you do all the work yourself (includes sourcing a T-case for 500.00)
NOTE I do not count purchasing tools in my rebuild costs
Project Difficulty out of 5 is about a 2-3 if you have any mechanical aptitude at all.
If you reach for the Vise Grips, Pipe wrench and a ball Peen Hammer for every repair you probably should pay some one to do this rebuild
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Waiting on a few parts.
2 shift collars
1 shift fork
My buddy got the Yoke seal surface tuned up on his lathe should get those in the mail in few days
Found and ordered the other half of the (SIDE BRACKET) Frame Side Mount Bracket
Hope to have this T-Case finished by next Saturday
Then on to getting the full Drive Train Mounted on the Test Stand, I am sure that will require some for fab work on the test stand
2 shift collars
1 shift fork
My buddy got the Yoke seal surface tuned up on his lathe should get those in the mail in few days
Found and ordered the other half of the (SIDE BRACKET) Frame Side Mount Bracket
Hope to have this T-Case finished by next Saturday
Then on to getting the full Drive Train Mounted on the Test Stand, I am sure that will require some for fab work on the test stand
Alright have one of the first true measurements for those that are interested
Applies only to the Ford NP 205 Married Transfer Case and the Advanced Adapters Np205 to Tremec 4050 Adapter
From the end of the Rear Output Shaft where the nut for the yoke starts to thread onto the shaft to the TRansmission side of the Advanced Adapters Transmission to Transfer Case Adapter is 13.5 inches for the overall length vs 21.5 inches overall length for the NV231 for the Transfer Case
The Information Available on the WEB claims the AX 15 is 16.5 vs 19.5 for the Tremec overall I should be plus 5 inches shorter in favor of the Tremec /NP205 combo vs the Factory AX15 and NV 231 combo, as stated earlier I will post the "REAL" numbers when I have both Drivetrains out and can get real world measurements.
Applies only to the Ford NP 205 Married Transfer Case and the Advanced Adapters Np205 to Tremec 4050 Adapter
From the end of the Rear Output Shaft where the nut for the yoke starts to thread onto the shaft to the TRansmission side of the Advanced Adapters Transmission to Transfer Case Adapter is 13.5 inches for the overall length vs 21.5 inches overall length for the NV231 for the Transfer Case
The Information Available on the WEB claims the AX 15 is 16.5 vs 19.5 for the Tremec overall I should be plus 5 inches shorter in favor of the Tremec /NP205 combo vs the Factory AX15 and NV 231 combo, as stated earlier I will post the "REAL" numbers when I have both Drivetrains out and can get real world measurements.
You asked what the purpose of this build was probably to roll it up in nutshell a bullet proof expedition vehicle and also a test bed for either a 4 or 6 bt going in an older Landcruiser Wagon one of the FJ 55 and up or maybe an older Land Rover series II 88 or defender or possibly an old mid 70's ford F250 high boy
Ok so I got a measurement the Tremec from the Engine Side of the Bell Housing to where the Transfer Case MOunts to the Rear Output is exactly 24 inches
For a total overall length of 37.5 inches for Transfer case ,Transfer Case Adapter, Transmission, and bell housing, the factory 231, 5spd and bellhousing are over 40 inches
For a total overall length of 37.5 inches for Transfer case ,Transfer Case Adapter, Transmission, and bell housing, the factory 231, 5spd and bellhousing are over 40 inches
I Have a ford Heavy Duty High Pinion for the front and a Dana 44 from an LJ in the rear
The Ford HP is off of a Snow Plow Truck and has the much thicker Axle Tubes
1/2 ton Dana 44 (Old School) has a stronger BJ plus it presses into the knuckle instead of the inner "C".
Yep if I remember correctly the snow plow version is a 3" tube just like the 3/4 ton version.
Contemplated putting 1 tons under it but damn that a lot of unsprung weight at least 2 more fat chicks and costs
