My diff Rebuild plan

chendaxian888 · 10-11-2021, 04:56 PM

Ok guys I am gonna surprise you guys today, I dont want to pay 1500 for rebuilding the Diff so I am gonna go it by myself in my collage with teacher's support, right now is my planning time, I created a PPT to let you guys watch it

chendaxian888 · 10-11-2021, 04:58 PM

https://docs.google.com/presentation...it?usp=sharing

chendaxian888 · 10-11-2021, 05:01 PM

can you guys see it?

Carno · 10-11-2021, 09:34 PM

I can see it! I don't know anything about rebuilding diffs, but it looks fairly thorough. Let us know how it goes!

Rusty · 10-11-2021, 10:37 PM

Which diff did you go with?

The vent tube should have been installed before bolting the diff cover to the diff housing. Less chance of getting metal shaving in the diff.

Did you reuse the stock shims or did you have to use other shims?

chendaxian888 · 10-13-2021, 11:05 AM

I will post a part list and a much more specific detailed operating list later

chendaxian888 · 10-13-2021, 11:09 AM

Quote:

Originally Posted by Rusty

Which diff did you go with?

The vent tube should have been installed before bolting the diff cover to the diff housing. Less chance of getting metal shaving in the diff.

Did you reuse the stock shims or did you have to use other shims?

I will go quaifie diff, I will replace most stuff in it but reuse the stock shims to get closest spec to stock, but adjesting and setting up the back lash of my new 3.9 ring gear is hard for me, I will measure all spec and disstance of stock, and set up the pinion as close as possible to stock
The most thing I don't know here is the backlash and torque of bolts from Nissan not internet.

chendaxian888 · 10-13-2021, 11:18 AM

Quote:

Originally Posted by Carno

I can see it! I don't know anything about rebuilding diffs, but it looks fairly thorough. Let us know how it goes!

OK

Rusty · 10-13-2021, 11:22 AM

So....... you haven't done this yet?

Give you a tip on the crush sleeve. If you over tighten it. It's junk. It's a one time deal. Then you have to use another new sleeve again.

JARblue · 10-13-2021, 11:59 AM

Quote:

Originally Posted by Rusty

So....... you haven't done this yet?

He's in the planning stages according to his first post. The power point is for reference; it wasn't documenting his work.

JARblue · 10-13-2021, 12:02 PM

Here are the specs from a 2011 FSM

SG4247 · 10-13-2021, 12:51 PM

If you are re-using the same ring and pinion that was with that pumpkin, and know it was not noisy, you can skip the pinion depth measurement and just look at/adjust pinion depth based the gear contact pattern.

If you are using a different/new ring and pinion, might borrow some tools to get the pinion depth set close to the dimension marked, and then look at the gear contact pattern.

Also, Snap-on makes a nice dial torque wrench for checking bearing pre-load. See the pic. The part number I have TER1FUA.

chendaxian888 · 10-13-2021, 11:12 PM

Quote:

Originally Posted by SG4247

If you are re-using the same ring and pinion that was with that pumpkin, and know it was not noisy, you can skip the pinion depth measurement and just look at/adjust pinion depth based the gear contact pattern.

If you are using a different/new ring and pinion, might borrow some tools to get the pinion depth set close to the dimension marked, and then look at the gear contact pattern.

Also, Snap-on makes a nice dial torque wrench for checking bearing pre-load. See the pic. The part number I have TER1FUA.

I am upgrading to 3.9 finial gear so I will use new pinion and ring, I want to measure the spec from the stock 3.6 pinion and do the same to the new pinion

chendaxian888 · 10-13-2021, 11:15 PM

https://docs.google.com/document/d/1...it?usp=sharing

I am writing my detail steps

chendaxian888 · 10-13-2021, 11:16 PM

Quote:

Originally Posted by JARblue

Here are the specs from a 2011 FSM

nice, this also helps, I find a assembly drawing of R200 on internet with torque spec on it also.

10-11-2021, 04:56 PM	#1 (permalink)
chendaxian888 Enthusiast Member Join Date: Feb 2020 Location: Ohio Posts: 317 Drives: 2015 370z auto Rep Power: 5	My diff Rebuild plan Ok guys I am gonna surprise you guys today, I dont want to pay 1500 for rebuilding the Diff so I am gonna go it by myself in my collage with teacher's support, right now is my planning time, I created a PPT to let you guys watch it JARblue and Rusty like this.

10-11-2021, 10:37 PM	#5 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,860 Drives: 2011 Nismo GM 6M Rep Power: 2684436	Which diff did you go with? The vent tube should have been installed before bolting the diff cover to the diff housing. Less chance of getting metal shaving in the diff. Did you reuse the stock shims or did you have to use other shims? JARblue and Optimiser like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-13-2021, 11:22 AM	#9 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,860 Drives: 2011 Nismo GM 6M Rep Power: 2684436	So....... you haven't done this yet? Give you a tip on the crush sleeve. If you over tighten it. It's junk. It's a one time deal. Then you have to use another new sleeve again. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html Last edited by Rusty; 10-13-2021 at 11:29 AM.

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10-11-2021, 04:58 PM	#2 (permalink)
chendaxian888 Enthusiast Member Join Date: Feb 2020 Location: Ohio Posts: 317 Drives: 2015 370z auto Rep Power: 5	https://docs.google.com/presentation...it?usp=sharing

10-11-2021, 05:01 PM	#3 (permalink)
chendaxian888 Enthusiast Member Join Date: Feb 2020 Location: Ohio Posts: 317 Drives: 2015 370z auto Rep Power: 5	can you guys see it?

10-11-2021, 09:34 PM	#4 (permalink)
Carno Base Member Join Date: Mar 2010 Location: Jacksonville Beach, FL Posts: 113 Drives: 09 370Z Rep Power: 15	I can see it! I don't know anything about rebuilding diffs, but it looks fairly thorough. Let us know how it goes!

10-13-2021, 11:05 AM	#6 (permalink)
chendaxian888 Enthusiast Member Join Date: Feb 2020 Location: Ohio Posts: 317 Drives: 2015 370z auto Rep Power: 5	I will post a part list and a much more specific detailed operating list later

10-13-2021, 11:15 PM	#14 (permalink)
chendaxian888 Enthusiast Member Join Date: Feb 2020 Location: Ohio Posts: 317 Drives: 2015 370z auto Rep Power: 5	https://docs.google.com/document/d/1...it?usp=sharing I am writing my detail steps