Rear Differential Bushing Leak

BossJ · 04-27-2020, 07:36 PM

Quote:

Originally Posted by Rusty

I like the SPL's. But that's me.

Question. You do have the black streaks on your diff cover? Correct? The reason I ask. Some have blown gear lube out of the breather hose. The end of the breather hose is on the driver side of the sub-frame. So, it will drip on the exhaust on that side.

yeah - here's what it looks like

Rusty · 04-27-2020, 07:53 PM

Quote:

Originally Posted by BossJ

yeah - here's what it looks like

Yep, diff bushing.

To change to bushing out. You're looking at at about 6 to 8 hrs of work. Depending on skill set. To drop the diff. You got the exhaust, drive shaft, axle shafts, frame bracing, sway bar. It's best to work from the front of the sub-frame. Install the new bushing from the front. Push it all the way in. Until the front of the bushing is flush with the sub-frame. This should get you where the diff should be. Bunk had to drop his diff a second time, and push the bushing a little deep to get the front 2 bolt holes to align up.

BossJ · 04-27-2020, 07:55 PM

Quote:

Originally Posted by Rusty

Yep, diff bushing.

To change to bushing out. You're looking at at about 6 to 8 hrs of work. Depending on skill set. To drop the diff. You got the exhaust, drive shaft, axle shafts, frame bracing, sway bar. It's best to work from the front of the sub-frame. Install the new bushing from the front. Push it all the way in. Until the front of the bushing is flush with the sub-frame. This should get you where the diff should be. Bunk had to drop his diff a second time, and push the bushing a little deep to get the front 2 bolt holes to align up.

Thanks man. What a pain in the ***. Damn Nissan. Why even allow this out on these cars... I've got 30k on the car...

Rusty · 04-27-2020, 08:07 PM

Quote:

Originally Posted by BossJ

Thanks man. What a pain in the ***. Damn Nissan. Why even allow this out on these cars... I've got 30k on the car...

Nissan has this style of bushing in different areas of the car. The lower rear front control arm bushings, the front sub-frame frame bushings.

BossJ · 04-27-2020, 08:10 PM

Quote:

Originally Posted by Rusty

Nissan has this style of bushing in different areas of the car. The lower rear front control arm bushings, the front sub-frame frame bushings.

Crazy....

Here's my next question - Mechanic says I can drive it - and I should be fine... Is this true? Do I need to baby it?

Rusty · 04-27-2020, 08:15 PM

Quote:

Originally Posted by BossJ

Crazy....

Here's my next question - Mechanic says I can drive it - and I should be fine... Is this true? Do I need to baby it?

You're be fine. Long as you don't do any hole shots, and side stepping the clutch.

BossJ · 04-27-2020, 08:20 PM

Quote:

Originally Posted by Rusty

You're be fine. Long as you don't do any hole shots, and side stepping the clutch.

Thanks Rusty. You've been lots of help!

tleschuck · 05-10-2020, 03:20 AM

I'm planned on having a Quaife diff put in my base 370z. With the new diff being installed, would installing the Z1 Motorsports Urethane Rear Diff Bushing Set be any more work?

BossJ · 05-10-2020, 06:16 AM

Quote:

Originally Posted by tleschuck

I'm planned on having a Quaife diff put in my base 370z. With the new diff being installed, would installing the Z1 Motorsports Urethane Rear Diff Bushing Set be any more work?

I got the z1 cover + urethane installed - I’m pretty sure it was a smart move to do all at the same time - if you’re having one thing done - might as well have the other.

Rusty · 05-10-2020, 12:17 PM

Quote:

Originally Posted by tleschuck

I'm planned on having a Quaife diff put in my base 370z. With the new diff being installed, would installing the Z1 Motorsports Urethane Rear Diff Bushing Set be any more work?

Get both lsd and diff bushing done at the same time. Since you have to drop the diff anyway. The diff bushing will tack on a few extra hours on the labor. Time to do it depends on your mechanic's skill set.

tleschuck · 05-10-2020, 01:27 PM

Quote:

Originally Posted by Rusty

Get both lsd and diff bushing done at the same time. Since you have to drop the diff anyway. The diff bushing will tack on a few extra hours on the labor. Time to do it depends on your mechanic's skill set.

Thanks for the info guys!

With the diff already out, how come it takes a few more hours to replace bushings? I'm just a noob at this but curious? And I hear a special removal tool is needed?

BettyZ · 04-27-2020, 08:57 PM

Quote:

Originally Posted by Rusty

Yep, diff bushing.

To change to bushing out. You're looking at at about 6 to 8 hrs of work. Depending on skill set. To drop the diff. You got the exhaust, drive shaft, axle shafts, frame bracing, sway bar. It's best to work from the front of the sub-frame. Install the new bushing from the front. Push it all the way in. Until the front of the bushing is flush with the sub-frame. This should get you where the diff should be. Bunk had to drop his diff a second time, and push the bushing a little deep to get the front 2 bolt holes to align up.

I pushed my Z1 bushing in from the back; used a bigass washer and a piece of angle iron and a long bolt w some washers and nuts and whatnot, and ratcheted it into place. Lots of threads here on ways to do it.

Sent from my SM-G955U using Tapatalk

Rusty · 04-27-2020, 10:30 PM

Quote:

Originally Posted by BettyZ

I pushed my Z1 bushing in from the back; used a bigass washer and a piece of angle iron and a long bolt w some washers and nuts and whatnot, and ratcheted it into place. Lots of threads here on ways to do it.

Sent from my SM-G955U using Tapatalk

It's easier if you would have gone in from the front.

05-10-2020, 03:20 AM	#8 (permalink)
tleschuck Base Member Join Date: Dec 2019 Location: Mokena, IL Posts: 26 Drives: 2020 Nissan 370Z Rep Power: 7	Bushings I'm planned on having a Quaife diff put in my base 370z. With the new diff being installed, would installing the Z1 Motorsports Urethane Rear Diff Bushing Set be any more work? __________________ Todd 2020 Nissan 370Z

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