OK, so which of you guys has 4.08 gears and likes them for road courses?

GSS138 · 12-03-2013, 11:27 AM

I ask because last night I got jealous of DE's brake rotor post and went to Z1 to price rotors and ended up buying the friggin Quaiffe LSD. Not sure how that happened, but I got it for <$1000.00 bucks.

So if I am doing the diff I was considering the 4.08 gear option at the same time. I know the dragsters and street guys love it, but was looking for any road racers opinions. I can tell you this much, there is not one track that I go to currently that I even come close to reaching top speed. The highest speed I have gotten to is about 145 on the front straight and turn 1 of AAA speedway. Everything else I go to is well under 130, and rarely touch fifth gear on most of the courses I do.

On the same token, is there anything else I should consider doing while I have the diff installed?

Any thoughts?

Chuck33079 · 12-03-2013, 11:36 AM

Quote:

Originally Posted by GSS138

On the same token, is there anything else I should consider doing while I have the diff installed?

Diff bushings and finned cover? Maybe some type of cooler?

takjak2 · 12-03-2013, 12:07 PM

Do the whiteline diff bushings.

I think SRM is worth more than gears, although EcuTek has claimed to fixed that.

matcop · 12-03-2013, 12:35 PM

Ive got a 7AT 7.08 gears conversion. If your running NA, IMO its one of the best upgrades. I also am running a Quaife LSD. The only thing i have ran into is that I was tracking the car at the hottest time of the year and with the extra RPM,s and no Diff cooler, I was cooking the fluid.

I also think that with me running no cats, I am getting some heat bleed over from the exhaust pipes. I need to address that issue as well.

If you are going to track the car, consider doing a diff cooler and at the very least a catch can so when the diff fluid starts getting hot, the fluid will have some place to go instead of pissing through the bleeder tube and getting blow back all over the car and the undercarriage. Its taken several pressure washings and long drives to finally burn off the smell.

I tried ordering the diff cooler kit that GTM has. It seems like they have great product but every time i called for one of the items, they never have it. Im sure GTM knows their stuff, but they never have it i stock. I also tried ordering their trick oil pan too ! They didnt have that in stock either.

DR_ · 12-03-2013, 12:56 PM

Make sure you have a very good shop install the Quaife. I've taken mine back twice and I still have a little noise on acceleration..

I skipped the gears because on the tracks I frequent it would make me shift more, negating the gearing advantage. I also enjoy the SRM.

matcop · 12-03-2013, 01:25 PM

I had Specialty Z in Chatsworth do my installs. I know its a bit far from where your at . You could try corner3. Ive heard good things about them

DEpointfive0 · 12-03-2013, 01:35 PM

Quote:

Originally Posted by GSS138

I ask because last night I got jealous of DE's brake rotor post and went to Z1 to price rotors and ended up buying the friggin Quaiffe LSD. Not sure how that happened, but I got it for <$1000.00 bucks.

So if I am doing the diff I was considering the 4.08 gear option at the same time. I know the dragsters and street guys love it, but was looking for any road racers opinions. I can tell you this much, there is not one track that I go to currently that I even come close to reaching top speed. The highest speed I have gotten to is about 145 on the front straight and turn 1 of AAA speedway. Everything else I go to is well under 130, and rarely touch fifth gear on most of the courses I do.

On the same token, is there anything else I should consider doing while I have the diff installed?

Any thoughts?

Sorry...

How many miles are on your VSLD? And maybe we can swap pumpkins before you do the swap if you're changing gear ratios anyways

GSS138 · 12-03-2013, 02:01 PM

Quote:

Originally Posted by matcop

I had Specialty Z in Chatsworth do my installs. I know its a bit far from where your at . You could try corner3. Ive heard good things about them

Will definitely be C3. Good friends with Mike and Steve is a Nissan Master technician. They are 10 mins from my house.

GSS138 · 12-03-2013, 02:02 PM

Quote:

Originally Posted by DEpointfive0

Sorry...

How many miles are on your VSLD? And maybe we can swap pumpkins before you do the swap if you're changing gear ratios anyways

I am at 33K. How long do they last? I have been warned it will eventually burn out, but nobody ever says how long it takes.

LostSol · 12-03-2013, 02:12 PM

do the whiteline bushings for SURE. My stock bushings ripped and are a pain so do them while your pumpkin is already out.

DEpointfive0 · 12-03-2013, 03:35 PM

Quote:

Originally Posted by GSS138

I am at 33K. How long do they last? I have been warned it will eventually burn out, but nobody ever says how long it takes.

60k-ish, although I don't know how long they last if you track with it. I'm just saying that if you're going to do a gear ratio swap anyways. Please god let's swap pumpkins. I'll pay for the labor to swap it!

DEpointfive0 · 12-03-2013, 03:53 PM

And PM!

Sh0velMan · 12-03-2013, 04:16 PM

I thought they had different stub axles and stuff?

Surely you can't do a 1:1 swap. Plus it'll hose your SRM Andrew (aren't you ATX? It'll mean you can't downshift worth a ****.)

cossie1600 · 12-03-2013, 05:02 PM

That 4th to 5th shift will get old pretty quickly

DEpointfive0 · 12-03-2013, 05:44 PM

Quote:

Originally Posted by Sh0velMan

I thought they had different stub axles and stuff?

Surely you can't do a 1:1 swap. Plus it'll hose your SRM Andrew (aren't you ATX? It'll mean you can't downshift worth a ****.)

I'll buy the stub axle, and you kinda lose cruise control, some people do, some don't. And as for SRM I'll just have joltier cuntier downshifts

12-03-2013, 11:27 AM	#1 (permalink)
GSS138 Track Member Join Date: Mar 2013 Location: Mission Viejo, CA Posts: 769 Drives: '12 370Z 6M Sport Rep Power: 13	OK, so which of you guys has 4.08 gears and likes them for road courses? I ask because last night I got jealous of DE's brake rotor post and went to Z1 to price rotors and ended up buying the friggin Quaiffe LSD. Not sure how that happened, but I got it for <$1000.00 bucks. So if I am doing the diff I was considering the 4.08 gear option at the same time. I know the dragsters and street guys love it, but was looking for any road racers opinions. I can tell you this much, there is not one track that I go to currently that I even come close to reaching top speed. The highest speed I have gotten to is about 145 on the front straight and turn 1 of AAA speedway. Everything else I go to is well under 130, and rarely touch fifth gear on most of the courses I do. On the same token, is there anything else I should consider doing while I have the diff installed? Any thoughts? matcop likes this. __________________ Current Mods: Vorpal Weapon +5.

12-03-2013, 12:07 PM	#3 (permalink)
takjak2 A True Z Fanatic Join Date: Feb 2011 Location: Sterling, VA Posts: 1,922 Drives: Legit Racecar 370Z Rep Power: 142	Do the whiteline diff bushings. I think SRM is worth more than gears, although EcuTek has claimed to fixed that. __________________ Mods \| Stuff \| Things \| Seat Time \| Nismo facebook.com/TeamSparrowSpeed

12-03-2013, 02:12 PM	#10 (permalink)
LostSol Premium Member Join Date: Jan 2013 Location: Orlando Posts: 1,021 Drives: 2010 370z 40th A.E. Rep Power: 15	do the whiteline bushings for SURE. My stock bushings ripped and are a pain so do them while your pumpkin is already out. __________________ 2010 Nissan 370Z 40th Anniversary Edition #762/1000 \| Forgestar \| Michelin \| Swift \| TRS \| Z Speed \| ARK \| Z1 \| Hawk \| CFE \| Evo-R \| GTMat \| Stillen \| Seibon \| Whiteline \| Pioneer \|

12-03-2013, 03:53 PM	#12 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	And PM! __________________ Do YOU want to know what/where I got my username from? ( Click to show/hide ) NSFW due to language:

12-03-2013, 04:16 PM	#13 (permalink)
Sh0velMan A True Z Fanatic Join Date: Jan 2012 Location: Dallas/Ft.Worth Posts: 3,349 Drives: Noisily. Rep Power: 20	I thought they had different stub axles and stuff? Surely you can't do a 1:1 swap. Plus it'll hose your SRM Andrew (aren't you ATX? It'll mean you can't downshift worth a **.) __________________ Buy My Car!** \| Build Thread

12-03-2013, 12:35 PM	#4 (permalink)
matcop Base Member Join Date: Jun 2012 Location: Montclair Posts: 68 Drives: 2009 370 Z Silver Rep Power: 13	Ive got a 7AT 7.08 gears conversion. If your running NA, IMO its one of the best upgrades. I also am running a Quaife LSD. The only thing i have ran into is that I was tracking the car at the hottest time of the year and with the extra RPM,s and no Diff cooler, I was cooking the fluid. I also think that with me running no cats, I am getting some heat bleed over from the exhaust pipes. I need to address that issue as well. If you are going to track the car, consider doing a diff cooler and at the very least a catch can so when the diff fluid starts getting hot, the fluid will have some place to go instead of pissing through the bleeder tube and getting blow back all over the car and the undercarriage. Its taken several pressure washings and long drives to finally burn off the smell. I tried ordering the diff cooler kit that GTM has. It seems like they have great product but every time i called for one of the items, they never have it. Im sure GTM knows their stuff, but they never have it i stock. I also tried ordering their trick oil pan too ! They didnt have that in stock either.

12-03-2013, 12:56 PM	#5 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 17	Make sure you have a very good shop install the Quaife. I've taken mine back twice and I still have a little noise on acceleration.. I skipped the gears because on the tracks I frequent it would make me shift more, negating the gearing advantage. I also enjoy the SRM.

12-03-2013, 01:25 PM	#6 (permalink)
matcop Base Member Join Date: Jun 2012 Location: Montclair Posts: 68 Drives: 2009 370 Z Silver Rep Power: 13	I had Specialty Z in Chatsworth do my installs. I know its a bit far from where your at . You could try corner3. Ive heard good things about them

12-03-2013, 05:02 PM	#14 (permalink)
cossie1600 A True Z Fanatic Join Date: Jun 2009 Location: californee way Posts: 5,380 Drives: 370, Leaf Rep Power: 30	That 4th to 5th shift will get old pretty quickly

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