my mechanics

In this video I'm restoring the differential from the Datsun 240Z.
I started to disassembly the R180 differential, when I quickly realized that it has the longest available ratio with 37:11. Which is 3.36 turns from the drive shaft and one turn on the wheel. Since I'm upgrading the transmission from a four speed to a five speed I definitely need a shorter ratio.
I was able to buy a 39:10 (3.9) ratio from a Swiss 240Z. It already looked in much rougher condition from the outside and it also showed a lot of wear on the inside. The pinion and ring gear looked perfectly fine though. Therefore I decided to also disassemble my 3.36 diff. I quickly noticed that all components are in much better condition, so I made the decision to only use the ring gear and pinion from the 3.9 diff and put that into mine.
The swap was straight forward and since I installed all new bearings I needed to re-shim it all anyway. I haven't shown any of that in the video, but a lot of measuring, calculating and trial and error was needed to have the diff properly back together.
After finishing the diff, it was time to install the rear axle back together on the car. Before I could do that I needed to install a bunch of stuff to the chassis first. I restored all these components off camera to save time. I restored the fuel and brake lines, hand brake mechanism, pedal box, diff belt, brake master cylinder, clutch cylinder, brake switch and brake proportioner. The whole reassemble went pretty smooth.
The car is now finally standing back on its own wheels since I started to disassemble it back in May 2023. I think it really looks amazing and I can't wait to further put it back together. Next big step on the list will be the engine and transmission restoration.

Stay tuned.

I also want to say a huge thanks to DCW Classic from Lithuania. He's such an immense help with this project. His huge experience and knowledge is very helpful. I also want to say thanks to Mister patina for the powder coating, S30.World for the firewall insulation and the hand brake cable, KW Suspension for the nice coilovers and the black springs.

I hope you like my work and enjoy the video.

Huge thank you to all of my Patreon supporters and especially to:

Aaron White
Adel AlSaffar
August Kupfer
Ben Burns
Bill Baith
Sigoss Family
Bold Cheddar
Brenna Redpath
Chris Ulivarri
Clint Fisher
Dane Prince
Derilas
Edward Conway
Jim Wasko
John Shebanow
Joseph Kamps
Josh Ledford
Joshua Scher
Kar
Keith McComb
Kerem Yollu
Kyle O'Keefe
Lambda GPU Workstations
Marcus H.
Mark Tesmer
Michael Fleisher
Mo B
Nick Houston
NoLoneSurvivor
Peter Cyprian
Peter Pearson
R.A.
ReddDirt
Scott Tomlin
Shao Zhang
Stefano Di Biase
Stuart
Tyler Carruth
Vickie Bligh
Vince Valenti
Yale Baker
Albert Siemers
Alex Manning
Alexander Hasselbach
Andre
Andreas
Andrey
Anthony Apellido
Anton Pchelkin
Arni Bjorgvinsson
Ben Humphrey
Ben Simmonds
Benny
Bonnie Williamson
Brian Hoerl
Caleb Betczynski
Chad Bryant
Charles D
Chris Faehl
Chris Visscher
Chris Walter
Christian Fjelldal
Christopher Lobay
Crystal Cash
Cyril
Damien Fuller-Sutherland
Daniel Varga
Dave Hardware
David Lehnus
David P Hruska
David Thompson
Derson Jacomini
Dustin Davis
Eddie
Erik Nordby
Ethan Mc
Gareth Rimmer
H D
Hakan Uzunoglu
Ivan Eugenio
Jack Curry
JacopoBello
James Hare
Jesus Fernandez Cortes
Joseph Coates
Justin Miller
Kiro Ivanovski
L0XIS
Labradog
Laurent Bolli
Lil' Brummbino
Marc Cerisier
Mary Casella
Matteo Capo
Matthew Johnson
MDC
Michał Święcki
Mihai
Norbert Spaar
Oleksandr
Pat Nakajima
Raoul Kriesi
repülő búgás
Roan Fryer
Robert Landrum
Rupert Purcat
Sam
Sarah B.
Scott Brooks
Scott Marshall
Sean Sands
Spencer Kormos
Stanley Dimant
Stefan Heymanns
Steve McVicker
Svenja Kuckla
Thanny
Tim Holt
Timofey Lychik
TLeaf
Trevor Kam
Tucker Ifft
William
Максим Гусев

Sorry for my bad english, it's not my language. I try my best to improve my technical english.

Thank you for watching 🙂

„I make a new one“ T-Shirts:
https://teespring.com/stores/my-mechanics

My Second Channel:
https://www.youtube.com/c/mymechanicsinsights

My Patreon Page:
https://www.patreon.com/mymechanics

In this video I'm fully restoring the complete rear axle, except the differential. I took the full assembly off the car in the teardown in episode 1. At first it looked like a quick and easy job, but after seeing all the parts after disassembly I knew this might take a little longer. I decided to go with a classic finish and paint them all in matt black. Almost all parts made of steel have been yellow zinc plated by a local company. This is a very good rust protection. On top of that Mister Patina powder coated the parts, this is a double protection and these parts should never ever rust again.
I'm also installing adjustable coilovers by KW in the rear. These came with the classic KW colors yellow and purple. This color scheme looks really cool, but it doesn't fit so well with the classic car. Luckily they also offer these parts in black with their so called „Classic Line“.
The rear sway bar was an aftermarket one. Its links were put together by a bunch of pieces. I decided to remake them in the same style as the original ones in the front. Doing that I was able to reuse the jig I made for the front axle for bending the special washers and also making the nylon lock nuts.
The drums from the brake looked really bad at first. A broken fin and damage on almost all edges. With a bit of TIG welding from my friend material was quickly added back and brought back to shape with some hand files. New brake shoes, brake cylinder and new springs and the rear brake is in perfect condition again. You may ask why I haven't done a disc conversion. Simply because the original brakes are quite good if adjusted well and since I'm keeping the engine pretty much stock, better brakes are not really needed. I also really like the look of the drum brakes.
The half-shafts were a little project on their own. The two sliding pieces were not zinc plated, because the plating would change the tolerances of the inside and may cause problems.
In this video I restored everything except the differential. This and the complete reassembly of the rear axle back to the car will come in episode 8 next week.

I also want to say a huge thanks to DCW Classic from Lithuania. He's such an immense help with this project. His huge experience and knowledge is very helpful. I also want to say thanks to Mister patina for the powder coating, KW Suspension for the nice coilovers and the black springs.

I hope you like my work and enjoy the video.

Huge thank you to all of my Patreon supporters and especially to:

Aaron White
Adel AlSaffar
August Kupfer
Ben Burns
Bill Baith
Sigoss Family
Bold Cheddar
Brenna Redpath
Chris Ulivarri
Clint Fisher
Dane Prince
Edward Conway
John Shebanow
Joseph Kamps
Josh Ledford
Joshua Scher
Kar
Keith McComb
Kerem Yollu
Kyle O'Keefe
Lambda GPU Workstations
Marcus H.
Mark Tesmer
Michael Fleisher
Mo B
Nick Houston
NoLoneSurvivor
Peter Cyprian
Peter Pearson
R.A.
ReddDirt
Scott Tomlin
Shao Zhang
Stefano Di Biase
Stuart
Tyler Carruth
Vickie Bligh
Vince Valenti
Yale Baker
Albert Siemers
Alex Manning
Andre
Andrey
Anthony Apellido
Anton Pchelkin
Arni Bjorgvinsson
Ben Humphrey
Ben Simmonds
Benny
Bonnie Williamson
Brian Hoerl
Caleb Betczynski
Chad Bryant
Charles D
Chris Faehl
Chris Visscher
Chris Walter
Christian Fjelldal
Christopher Lobay
Crystal Cash
Cyril
Damien Fuller-Sutherland
Daniel Varga
Dave Hardware
David Lehnus
David P Hruska
David Thompson
Derson Jacomini
Dustin Davis
Eddie
Erik Nordby
Ethan Mc
Gareth Rimmer
H D
Hakan Uzunoglu
Ivan Eugenio
Jack Curry
JacopoBello
James Hare
Jesus Fernandez Cortes
Joseph Coates
Justin Miller
Kiro Ivanovski
L0XIS
Laurent Bolli
Lil' Brummbino
Marc Cerisier
Mary Casella
Matteo Capo
Matthew Johnson
MDC
Michał Święcki
Mihai
Norbert Spaar
Oleksandr
Pat Nakajima
Raoul Kriesi
repülő búgás
Roan Fryer
Robert Landrum
Rupert Purcat
Sam
Sarah B.
Scott Brooks
Scott Marshall
Sean Sands
Spencer Kormos
Stanley Dimant
Stefan Heymanns
Svenja Kuckla
Thanny
Tim Holt
Timofey Lychik
Trevor Kam
Tucker Ifft
William
Максим Гусев

Sorry for my bad english, it's not my language. I try my best to improve my technical english.

Thank you for watching 🙂

„I make a new one“ T-Shirts:
https://teespring.com/stores/my-mechanics

My Second Channel:
https://www.youtube.com/c/mymechanicsinsights

My Patreon Page:
https://www.patreon.com/mymechanics