Z1 diff cover

shadow85 · 04-30-2022, 12:23 AM

I was about to order a Z1 diff cover but I have recently heard from a number of people that their Z1 high capacity covers have failed, or broke.

They said it may have been a bad batch as some people have run them for a while without issues.

Can anyone else share their experience on the Z1 covers? Do they break commonly?

I also have the option for the high capacity cover of the GTEK brand which I can get locally in Australia, but it is like 2x the cost of the Z1 cover shipped to me.

Rusty · 04-30-2022, 09:25 AM

I have the Z1 diff cover. Had it on for about 5 yrs now. Haven't had any problems. i also have a Bell diff brace too.

sirnixalot · 04-30-2022, 10:12 AM

Any single stud cover will break if your launching at the track. I can see them breaking on the street if you have zero empathy.

I plan on replacing my Z1 cover with the Pathfinder conversion from GKtech.

Witnessed an NA 350z on drag radials grenade last saturday at the track. Not sure how the hell mine survived so long doing the same thing with way more power.

shadow85 · 04-30-2022, 08:37 PM

Ahh yea, they are the sorts of pictures I have been seeing recently of the Z1 covers.

Ahh damm, maybe I should try Gtek cover.

sirnixalot · 05-01-2022, 06:45 AM

To be clear it’s not just the z1 cover that will break, any single stud cover will fail in the same way.

sirnixalot · 05-01-2022, 01:30 PM

Well ****. He fedexed a new cover and the bell works brace and is back out racing today. I’ll let you know if this one stays in one piece.

shadow85 · 05-01-2022, 06:36 PM

Quote:

Originally Posted by sirnixalot

To be clear it’s not just the z1 cover that will break, any single stud cover will fail in the same way.

Hmm, ok. The Gtek one we have in australia is a dual stud cover.

sirnixalot · 05-01-2022, 06:40 PM

He made it through the day just fine.

shadow85 · 05-01-2022, 06:45 PM

Well just found out the gtek covers have sold out and unlikely to be made again anytime soon.

SeeThruHead · 05-01-2022, 07:02 PM

so.
i have questions about this too.

The pathfinder conversion is a weld in solid connection.
So really no point in running urethane diff bushings with that...right?
might as well go all solid bushings?

the z1 + bell race works. The bell connection is also pretty rigid. Could/should you use it with urethane bushings? (and z1 diff cover)

same goes for the z1 diff brace + cover?
Solid bushings all around?

I just picked up urethane bushings second hand but wondering if i should be using solid if i'm going to run a z1/bell brace.

Rusty · 05-01-2022, 08:04 PM

Quote:

Originally Posted by SeeThruHead

so.
i have questions about this too.

The pathfinder conversion is a weld in solid connection.
So really no point in running urethane diff bushings with that...right?
might as well go all solid bushings?

the z1 + bell race works. The bell connection is also pretty rigid. Could/should you use it with urethane bushings? (and z1 diff cover)

same goes for the z1 diff brace + cover?
Solid bushings all around?

I just picked up urethane bushings second hand but wondering if i should be using solid if i'm going to run a z1/bell brace.

I have the SPL solid bushing and the Bell brace. I also don't do hole shots.

DarkJak · 05-01-2022, 11:34 PM

2x the price of the Z1 cover seems worth it for the GK one. Here in the US, it's more of a 3x price difference, and I couldn't justify swapping over.
The interior walls that the fluid sloshes against are closer to OEM, supposedly better for the diff, and it comes with 2 mounts. You can price in a separate diff brace to get a closer comparison, since that's closer to what the second mounting point is like.

Rusty · 05-02-2022, 10:29 AM

SOHO has a billet diff cover. I don't see it on their website tho.

**SOHO Motorsports Billet Differential Cover**

tirespin782 · 05-02-2022, 12:00 PM

Quote:

Originally Posted by sirnixalot

Any single stud cover will break if your launching at the track. I can see them breaking on the street if you have zero empathy.

I plan on replacing my Z1 cover with the Pathfinder conversion from GKtech.

Witnessed an NA 350z on drag radials grenade last saturday at the track. Not sure how the hell mine survived so long doing the same thing with way more power.

This is one of the reasons I decided to go with a two-stud cover. I didn't know about the pathfinder cover, but I did know the greddy one would bolt up for the driver's side stud. I just welded in a bushing sleeve for the passenger side and swapped out the bushings for new solid rubber ones.

SeeThruHead · 05-02-2022, 08:20 PM

Quote:

Originally Posted by Rusty

SOHO has a billet diff cover. I don't see it on their website tho.

**SOHO Motorsports Billet Differential Cover**

who wants in on a group buy for this thing. i wouldnt mind one.

04-30-2022, 12:23 AM	#1 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 917 Drives: 15' 370Z A/T AMM TT Rep Power: 24	Z1 diff cover I was about to order a Z1 diff cover but I have recently heard from a number of people that their Z1 high capacity covers have failed, or broke. They said it may have been a bad batch as some people have run them for a while without issues. Can anyone else share their experience on the Z1 covers? Do they break commonly? I also have the option for the high capacity cover of the GTEK brand which I can get locally in Australia, but it is like 2x the cost of the Z1 cover shipped to me.

04-30-2022, 09:25 AM	#2 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,864 Drives: 2011 Nismo GM 6M Rep Power: 2684436	I have the Z1 diff cover. Had it on for about 5 yrs now. Haven't had any problems. i also have a Bell diff brace too. Hotrodz and redondoaveb like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

05-01-2022, 06:45 AM	#5 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57453	To be clear it’s not just the z1 cover that will break, any single stud cover will fail in the same way. __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

05-01-2022, 06:40 PM	#8 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57453	He made it through the day just fine. __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

05-01-2022, 07:02 PM	#10 (permalink)
SeeThruHead Track Member Join Date: Jun 2020 Location: Toronto Posts: 715 Drives: Red '18 Sport Manual Rep Power: 23497	so. i have questions about this too. The pathfinder conversion is a weld in solid connection. So really no point in running urethane diff bushings with that...right? might as well go all solid bushings? the z1 + bell race works. The bell connection is also pretty rigid. Could/should you use it with urethane bushings? (and z1 diff cover) same goes for the z1 diff brace + cover? Solid bushings all around? I just picked up urethane bushings second hand but wondering if i should be using solid if i'm going to run a z1/bell brace. __________________ My Build thread STH Build Plan Thread Images too big fix here

04-30-2022, 08:37 PM	#4 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 917 Drives: 15' 370Z A/T AMM TT Rep Power: 24	Ahh yea, they are the sorts of pictures I have been seeing recently of the Z1 covers. Ahh damm, maybe I should try Gtek cover.

05-01-2022, 06:45 PM	#9 (permalink)
shadow85 Track Member Join Date: Jul 2015 Location: South Australia, Austra Posts: 917 Drives: 15' 370Z A/T AMM TT Rep Power: 24	Well just found out the gtek covers have sold out and unlikely to be made again anytime soon.

05-01-2022, 11:34 PM	#12 (permalink)
DarkJak A True Z Fanatic Join Date: Jun 2011 Location: Madison, WI Posts: 1,390 Drives: 2009 370Z Rep Power: 13448	2x the price of the Z1 cover seems worth it for the GK one. Here in the US, it's more of a 3x price difference, and I couldn't justify swapping over. The interior walls that the fluid sloshes against are closer to OEM, supposedly better for the diff, and it comes with 2 mounts. You can price in a separate diff brace to get a closer comparison, since that's closer to what the second mounting point is like. __________________ @stupidtoycars \| My track vids 09 7AT\|MCS 2WNR\|Topgunz Rotrex\|Ecutek (Eugene)\|Maxxis RC1\|Titan-7 TS-5\|OSG LSD\|Rear Mount Derale Oil Cooler (WIP)+25 Trans Cooler\|Fismo\|G-LOC R12/R10\|Zeta III L\|NLR Wing and Splitter\|CJM Pan and Fuel Hat\|Radium Surge Tank\|AP Racing CP9668

05-02-2022, 10:29 AM	#13 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,864 Drives: 2011 Nismo GM 6M Rep Power: 2684436	SOHO has a billet diff cover. I don't see it on their website tho. SOHO Motorsports Billet Differential Cover JARblue and SeeThruHead like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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