Problem with FI exhaust and Z1 diff cover

RN SHARK · 09-16-2017, 08:12 PM

So I installed my new Wavetrac LSD and finned Z1 differential cover. All went well until I reinstalled my Fast Intentions exhaust. The largest fin is rubbing on the left side exhaust pipe. I've tried manipulating the exhaust hanger, but no luck. Any suggestions?

redondoaveb · 09-16-2017, 08:30 PM

Quote:

Originally Posted by RN SHARK

So I installed my new Wavetrac LSD and finned Z1 differential cover. All went well until I reinstalled my Fast Intentions exhaust. The largest fin is rubbing on the left side exhaust pipe. I've tried manipulating the exhaust hanger, but no luck. Any suggestions?

I've got the same cover and I'll be getting my fi cbe real soon. If I have the same issue, that fin will be getting cut off.

Rusty · 09-16-2017, 10:13 PM

Someone else had the same problem. I believe they cut off the fin or fins that was causing the issue.

Spooler · 09-16-2017, 10:27 PM

Yeap, I had the same issue. I took a hacksaw and scribed the fin, hit it with a screwdriver and hammer to break it off. Worked like a charm.

Rusty · 09-16-2017, 10:40 PM

Quote:

Originally Posted by Spooler

Yeap, I had the same issue. I took a hacksaw and scribed the fin, hit it with a screwdriver and hammer to break it off. Worked like a charm.

It was you who I was thinking about.

RN SHARK · 09-17-2017, 12:24 AM

I was thinking of grinding it down. I don't want to cause the cover to crack.

lj909 · 09-17-2017, 12:44 AM

I have a nismo oem exhaust and that fin was so close it was making a contact sound. I don't know why they made it like this. Even in there promotional video you can see it's almost touching.

barncobob · 09-17-2017, 04:04 AM

a small 5" grinder with a thin cut off wheel will make short work of it.

Quicksilvers · 09-18-2017, 11:56 PM

Remove the Z1 differential cover and use a grinder and grind down the fins as even as possible. You should be able to make it clear your FI exhaust with some work. You will just have to refill your differential fluid.

Felix 808 · 09-22-2017, 11:10 AM

Quote:

Originally Posted by RN SHARK

I was thinking of grinding it down. I don't want to cause the cover to crack.

This would be the better way.

Using an angle grinder there would be no need to remove the cover.

pkxu123 · 12-08-2022, 11:31 PM

Digging up old post - is this needed for Invidia Gemini?

Getting my Z1 diff cooler installed in about a week.

Rusty · 12-09-2022, 04:56 PM

Quote:

Originally Posted by pkxu123

Digging up old post - is this needed for Invidia Gemini?

Getting my Z1 diff cooler installed in about a week.

Depends on how close the exhaust pipe is to the fins. I don't know how close your exhaust is.

I trimmed the fins on mine when it was still on the car. Used a 3" cut off wheel on a die grinder.

pkxu123 · 12-09-2022, 06:03 PM

Quote:

Originally Posted by Rusty

Depends on how close the exhaust pipe is to the fins. I don't know how close your exhaust is.

I trimmed the fins on mine when it was still on the car. Used a 3" cut off wheel on a die grinder.

Hmm thinking of just leaving the stock one on then.

SS_Firehawk · 12-12-2022, 09:20 PM

Honestly, buy the Nismo diff cover instead. It's a better and stronger design. That .5 quart will not prevent overheating. I run the MA Motorsports diff cooler kit with the Nismo diff cover. I ran Three events and the fluid was still blue.

Spooler · 12-12-2022, 10:36 PM

Quote:

Originally Posted by SS_Firehawk

Honestly, buy the Nismo diff cover instead. It's a better and stronger design. That .5 quart will not prevent overheating. I run the MA Motorsports diff cooler kit with the Nismo diff cover. I ran Three events and the fluid was still blue.

Yup, I ran the Z1 diff cover at first. Overheated the diff on the Tail of the Dragon and puked fluid. My diff cooler was sitting at home in the box. It went on the car shortly after.

09-16-2017, 10:13 PM	#3 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 69 Posts: 35,513 Drives: 2011 Nismo GM 6M Rep Power: 2684439	Someone else had the same problem. I believe they cut off the fin or fins that was causing the issue. Felix 808, Hotrodz, wideglideleon and 1 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

09-16-2017, 10:27 PM	#4 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 14,125 Drives: 2013 Nismo 370z Rep Power: 2684394	Yeap, I had the same issue. I took a hacksaw and scribed the fin, hit it with a screwdriver and hammer to break it off. Worked like a charm. redondoaveb likes this.

09-17-2017, 12:24 AM	#6 (permalink)
RN SHARK Track Member Join Date: Jun 2011 Location: Delafield, WI Age: 45 Posts: 618 Drives: 09 370Z, 14 SRT GC Rep Power: 36	I was thinking of grinding it down. I don't want to cause the cover to crack. Felix 808 likes this. __________________ ___________ '09 6sp/Z1/PowerTrix/SPL/Swift/SRP/Whiteline/F.I.LTH&CBE/UpRev by Seb/CJM/Stillen/Ings+1/RJM/TrackSpec/Sparco/Motul/Wavetrac/Coolerworx/Verus/CraftSquare '14 SRT Grand Cherokee; '08 TL Type-S

09-17-2017, 12:44 AM	#7 (permalink)
lj909 Track Member Join Date: May 2014 Location: Riverside Posts: 584 Drives: 40th 370Z Rep Power: 13	I have a nismo oem exhaust and that fin was so close it was making a contact sound. I don't know why they made it like this. Even in there promotional video you can see it's almost touching. __________________ PW 07 HR350Z R.I.P. Totaled by 82yr old woman 2010 40th Anniversary 370Z

09-17-2017, 04:04 AM	#8 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 590	a small 5" grinder with a thin cut off wheel will make short work of it. RN SHARK likes this.

09-18-2017, 11:56 PM	#9 (permalink)
Quicksilvers A True Z Fanatic Join Date: May 2017 Location: Atlanta, GA Posts: 2,038 Drives: 2017 370z Rep Power: 25464	Remove the Z1 differential cover and use a grinder and grind down the fins as even as possible. You should be able to make it clear your FI exhaust with some work. You will just have to refill your differential fluid.

12-08-2022, 11:31 PM	#11 (permalink)
pkxu123 Base Member Join Date: May 2021 Location: Australia Posts: 29 Drives: 2017 Nissan 370z Rep Power: 30	Digging up old post - is this needed for Invidia Gemini? Getting my Z1 diff cooler installed in about a week.

12-12-2022, 09:20 PM	#14 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Honestly, buy the Nismo diff cover instead. It's a better and stronger design. That .5 quart will not prevent overheating. I run the MA Motorsports diff cooler kit with the Nismo diff cover. I ran Three events and the fluid was still blue. redondoaveb and DaveZ03 like this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[FOR SALE] NEW! Quaife Diff QDF11L, Bearings, bushing, bolts, oil, finned diff cover...	kdrshocker	Parts for sale (Private Classifieds)	14	11-01-2018 11:07 PM
[FOR SALE] Nismo's diff cover (new)	1LIFE	Parts for sale (Private Classifieds)	11	02-27-2016 03:33 AM
[FOR SALE] OEM VLSD diff and diff cover	FireDan50	Parts for sale (Private Classifieds)	6	05-09-2015 03:03 PM
Nismo diff cover	klill001	Nismo 370Z	12	09-04-2013 01:19 AM
[FOR SALE] Nismo 370z diff with 4.08 gears and nismo finned diff cover	MrVQHR	Parts for sale (Private Classifieds)	3	07-16-2012 09:05 PM