G37S Sedan on 3.916 Gears - OH MY GOD
03-21-2013, 02:39 PM
#46
So I just secured a complete M/T VLSD diff w/ stub axles off of a 2007 G35 coupe with 13k miles from a boneyard here in CT. (I found tons of entries on 'car-parts' .com)
A call to Rich at RDZ Motorsports in Danbury, CT is securing a set of 4.08's and the install kit.
We'll outfit the assembly back here at The Shop in Norwalk.
T-minus ten and counting....
Thanks again for the straight scoop.
Coop
A call to Rich at RDZ Motorsports in Danbury, CT is securing a set of 4.08's and the install kit.
We'll outfit the assembly back here at The Shop in Norwalk.
T-minus ten and counting....
Thanks again for the straight scoop.
Coop
I had 4.083 gears in my 350Z with 285 rear tires and basic bolt ons. I broke the right rear axle one time trying to take off hard from a dead stop. The car had almost 120,000 miles on it so I don't know if it was a fluke thing or the gears had something to do with it, but I thought I'd let you know. Heavy duty upgraded axles are available.
03-21-2013, 03:56 PM
#47
Registered User
Thread Starter
03-21-2013, 04:39 PM
#48
Registered User
Can'tGme...
Thanks. We know this. However, this is one of the better aspects of an auto.
Nothing is break proof, but there is a lot less violence to the drivetrain. We'll see.
Coop
Thanks. We know this. However, this is one of the better aspects of an auto.
Nothing is break proof, but there is a lot less violence to the drivetrain. We'll see.
Coop
03-21-2013, 09:32 PM
#49
Registered User
03-24-2013, 06:16 PM
#50
Registered User
Thread Starter
Update for those reading this thread:
Just changed my diff fluid after driving on these brand new gears for 750 miles. The gear oil was DISGUSTING from the break in! Bright metal flecks everywhere in the fluid and lots of shavings, but this is normal since they are new gears.
If anyone does this, change your diff oil after 500 miles on the new gears! I'm changing my diff oil again after 3,000 more miles to be sure all the break in materials are out.
Just changed my diff fluid after driving on these brand new gears for 750 miles. The gear oil was DISGUSTING from the break in! Bright metal flecks everywhere in the fluid and lots of shavings, but this is normal since they are new gears.
If anyone does this, change your diff oil after 500 miles on the new gears! I'm changing my diff oil again after 3,000 more miles to be sure all the break in materials are out.
03-25-2013, 01:46 AM
#52
Registered User
Thread Starter
03-26-2013, 08:29 AM
#54
Registered User
Hey Guys,
I just had my final drive gears swapped at SpecialtyZ in California for some 3.916 gears from a Nissan Frontier. As you may know, the standard gear ratio in this car for the autos is 3.3.
All I can say is...WOW!!!!
This is how the car should have been from the factory. Highway RPM's are only up 250-300 or so. 80mph is 3k RPM now.
However, the acceleration of the car is DRAMATICALLY improved. The car wants to go with the slightest bit of gas now! It's just way easier to get it moving. Clocked a 0-60 at around 4.5 seconds. Fantastic mod for the money, this is easily the biggest NA mod you could do to make this car "wake up" and be sporty and quick.
Just thought I'd share :P
I just had my final drive gears swapped at SpecialtyZ in California for some 3.916 gears from a Nissan Frontier. As you may know, the standard gear ratio in this car for the autos is 3.3.
All I can say is...WOW!!!!
This is how the car should have been from the factory. Highway RPM's are only up 250-300 or so. 80mph is 3k RPM now.
However, the acceleration of the car is DRAMATICALLY improved. The car wants to go with the slightest bit of gas now! It's just way easier to get it moving. Clocked a 0-60 at around 4.5 seconds. Fantastic mod for the money, this is easily the biggest NA mod you could do to make this car "wake up" and be sporty and quick.
Just thought I'd share :P
03-26-2013, 09:33 PM
#55
Registered User
Got the complete G35 VLSD diff and (2) spare axles. ($425) I'm guessing/hoping the G35 coupe and mine are the same? Nice to have a backup.
I'll be dropping it off to Rich at RDZ motorsports in Danbury for the gears R&R. Jimmy and his men at The The Shop will swap rears when it's finale.
For me the 4.08's will not be such a dramatic change. I already have 3.69's. It's only a .4 change in ratio. That said, this will be just right.
I'm looking forward to the completion. Probably about two weeks, or a bit more.
Stay posted.
Jim
I'll be dropping it off to Rich at RDZ motorsports in Danbury for the gears R&R. Jimmy and his men at The The Shop will swap rears when it's finale.
For me the 4.08's will not be such a dramatic change. I already have 3.69's. It's only a .4 change in ratio. That said, this will be just right.
I'm looking forward to the completion. Probably about two weeks, or a bit more.
Stay posted.
Jim
03-27-2013, 01:54 AM
#56
Registered User
Thread Starter
Does the car feel better to drive? Does the transmission feel better. I cant drive my car in Normal mode it just pi$$ the hell out of me ,and I feel like selling the car every time I do so, so I just drive in manual mode 100% of the time.If it help with the horrible trans I may give it I try cause I just got the pics to put it for sale.
03-27-2013, 02:02 AM
#57
Registered User
Thread Starter
Got the complete G35 VLSD diff and (2) spare axles. ($425) I'm guessing/hoping the G35 coupe and mine are the same? Nice to have a backup.
I'll be dropping it off to Rich at RDZ motorsports in Danbury for the gears R&R. Jimmy and his men at The The Shop will swap rears when it's finale.
For me the 4.08's will not be such a dramatic change. I already have 3.69's. It's only a .4 change in ratio. That said, this will be just right.
I'm looking forward to the completion. Probably about two weeks, or a bit more.
Stay posted.
Jim
I'll be dropping it off to Rich at RDZ motorsports in Danbury for the gears R&R. Jimmy and his men at The The Shop will swap rears when it's finale.
For me the 4.08's will not be such a dramatic change. I already have 3.69's. It's only a .4 change in ratio. That said, this will be just right.
I'm looking forward to the completion. Probably about two weeks, or a bit more.
Stay posted.
Jim
03-27-2013, 02:23 PM
#58
Registered User
More importantly: Can an AFTERMARKET driveshaft handle the torque? So far there are zero available offerings. Although a carbon shaft would be nice, I don't think the OEM heavy driveshaft is the weak link. Awaiting word on the carbon driveshaft thread to evolve.
I'm now on the search for the OEM automatic flange. In order to properly set it up on the bench with the crush sleeve, it needs my auto flange. That would require the car being laid up on a lift at The Shop for the duration.
We are scouting for a new or used one, so this is literally a bolt over.
Coop
I'm now on the search for the OEM automatic flange. In order to properly set it up on the bench with the crush sleeve, it needs my auto flange. That would require the car being laid up on a lift at The Shop for the duration.
We are scouting for a new or used one, so this is literally a bolt over.
Coop
03-27-2013, 03:45 PM
#59
I've been looking at this mod for a while now. So much conflicting information out there. One guy on here said they put the 4.08s in his automatic's differential no problem. Another guy on here (or 370zforum) said his cruise control still works and he has an automatic. If I can find a used differential at a decent price I'll be doing this mod this summer.
I'm sure you already know this but it's not looked at as a .4 change in ratio but more correctly as a 10% change in ratio. That's pretty big by the way. A 10% increase in leverage is what everybody needs.
I'm sure you already know this but it's not looked at as a .4 change in ratio but more correctly as a 10% change in ratio. That's pretty big by the way. A 10% increase in leverage is what everybody needs.
03-27-2013, 06:55 PM
#60
Registered User
Good clarification. I'll take 10%. My point is that there are some who go from 3.3 or the 3.5 ratio to 4.08's, so my 10% isn't as severe.
Hey, Nissan has 4.36's if I'm feeling greedy!
Gears ordered, automatic flange ordered ($125), and all systems go. I'll deliver the diff to the shop this weekend.
I'll report back MY trials as well. T-minus 6 and counting.....
Hey, Nissan has 4.36's if I'm feeling greedy!
Gears ordered, automatic flange ordered ($125), and all systems go. I'll deliver the diff to the shop this weekend.
I'll report back MY trials as well. T-minus 6 and counting.....