HLSD for the altima coupe!

All things Altima Coupe.
User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

HLSD for the altima coupe!

Postby mcheddadi » Mon Feb 09, 2009 1:13 pm

Ok this flyed under my radar, nissan released the Sentra SE-R and Sentra SE-R SpecV for 2007, 2008 and 2009. That we all know. but what I didn't know is that the SE-R has the SAME transaxle, SAME part number RS6F52A as the Altima coupe 6MT.

that fine and all but the Sentra SE-R SpecV also has the same transmission except one thing. it has a HELICAL LIMITED SLIP DIFFERENTIAL!!!! (HLSD)

Part number is RS6F52H for the 6MT HLSD equipped Sentra and RS6F52A for the non equipped one and ours.The only difference would be the final drives:4.428 for the SpecV and 4.133 for the Altima coupe.

But the interesting thing here is that you can basically swap the Differential case assembly of the SpecV to the Altima coupe !!!!!!

This opens up soo much for anyone who wants to track the altima coupe or just get the BEST handling from a FWD car.

I'm going to start look for Sentra SE-R SpecV differentials or busted transmissions on ebay so I can get that HLSD for cheap!
Modified by mcheddadi at 1:46 AM 2/10/2009


User avatar
Hussain
Posts: 3162
Joined: Mon Oct 22, 2007 10:54 pm
Car: 08 Altima Coupe 3.5se CVT

Re: HLSD for the altima coupe! (mcheddadi)

Postby Hussain » Mon Feb 09, 2009 1:33 pm

will it also work with CVT altima coupes :hide

User avatar
ESP
Posts: 1508
Joined: Thu Apr 24, 2008 6:23 pm
Car: 2008 SexyBlack A/C
Contact:

Re: HLSD for the altima coupe! (mcheddadi)

Postby ESP » Mon Feb 09, 2009 1:50 pm

Damn Mehdi, you always sound just like a kid who's walked into the world's largest candy store when you discover a new part for our cars! haha

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: HLSD for the altima coupe! (Hussain)

Postby mcheddadi » Mon Feb 09, 2009 2:03 pm

Hussain wrote:will it also work with CVT altima coupes :hide
err NO lol
ESP wrote:Damn Mehdi, you always sound just like a kid who's walked into the world's largest candy store when you discover a new part for our cars! haha
I know hahaha! but this mods is sooo awesome. it's the difference between an awesome car and a GODLIKE car.

SSRALTI
Posts: 23
Joined: Wed Oct 01, 2008 9:58 pm
Car: 08 Altima 3.5 SE 6MT Coupe w/premium package

Re: HLSD for the altima coupe! (mcheddadi)

Postby SSRALTI » Mon Feb 09, 2009 2:39 pm

Will this work on a 3.5?

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: HLSD for the altima coupe! (SSRALTI)

Postby mcheddadi » Mon Feb 09, 2009 2:51 pm

Yeah, the 6MT transmission is the same for the 2.5 and 3.5 altima coupe

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: HLSD for the altima coupe! (mcheddadi)

Postby mcheddadi » Mon Feb 09, 2009 4:53 pm

Ok I checked and the part number is 38411-B16U001http://www.courtesyparts.com/3....html

it's about 560$, I'm going to see how difficult it is to install this (If I'm lucky I'll only have to remove the transmission without the engine)


Modified by mcheddadi at 1:46 AM 2/10/2009

One Crazy Max
Posts: 365
Joined: Wed Oct 03, 2007 2:34 pm
Car: 2007 Nissan Altima 3.5SE 6MT
Contact:

Postby One Crazy Max » Mon Feb 09, 2009 7:47 pm

damn 4.428 compared to 4.133 is really short.

i kind of like the long gear ratios in the stock 6MT, and the final drive is great.

it will definately accelerate alot faster, thats for sure, but am i willing to lose top speed for LSD...maybe

another alternative though to look into is trying to fit the LSD from the 02-05 maximas.

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (One Crazy Max)

Postby mcheddadi » Mon Feb 09, 2009 8:00 pm

Yeah, but if I understood this correctly the HLSD doesn't have to be with the final drive gear of the sentra, I can just keep my final drive and just change the differential for the HLSD one. I'll go look for diagrams for this
Modified by mcheddadi at 1:19 AM 2/10/2009

psi101101
Posts: 242
Joined: Tue Oct 14, 2008 6:37 pm
Car: 2009 altima coupe 2.5s
Contact:

Re: (mcheddadi)

Postby psi101101 » Mon Feb 09, 2009 8:12 pm

this works with CVT????

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (psi101101)

Postby mcheddadi » Mon Feb 09, 2009 8:22 pm

I'm guessing no, cvt is another kind of transmission and needs a custom shaped differential for itself. this one is made to fit in the 6MT case. Gime a sec, I got the diagrams I needed and I'll show you guys.

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (mcheddadi)

Postby mcheddadi » Mon Feb 09, 2009 8:43 pm

Our 6MT transmission ( RS6F52A )

The 07+ Sentra SE-R SpecV's transmission ( RS6F52H )

Here'sa differential map I've made to show you the parts that are different AKA the differential and the HLSD, notice that its a PERFECT fit.

Here is our differential In a 3D diagram (number 4)

Here is the HLSD differential In a 3D diagram (number 4)

The final gear can be swapped so we can keep our nice final gear ratios.

Guys , this , is, EPIC!!!!!111

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (One Crazy Max)

Postby mcheddadi » Mon Feb 09, 2009 8:49 pm

One Crazy Max wrote:damn 4.428 compared to 4.133 is really short.

i kind of like the long gear ratios in the stock 6MT, and the final drive is great.

it will definately accelerate alot faster, thats for sure, but am i willing to lose top speed for LSD...maybe

another alternative though to look into is trying to fit the LSD from the 02-05 maximas.
Nope it won't work, I checked and its not the same transmission housing for the LSD from the maximas. the parts won't fit. but anyways, now that we have a DIRECT fitting part from the Sentra, there's no problem haha!

And to think that the Sentra had a HLSD and we didn't, Nissan shame on you.

User avatar
GreyZone
Posts: 312
Joined: Wed Sep 26, 2007 7:10 am
Car: AC 3.5 SE 6MT Dazling White

Re: (mcheddadi)

Postby GreyZone » Tue Feb 10, 2009 12:46 am

Ahhh, so here's the answer for torque steer with turbo!! LSD = ZERO torque steer!!

User avatar
D-Roll
Posts: 1501
Joined: Tue Nov 20, 2007 3:24 am
Car: 08 Nissan 350Z Touring Coupe
Location: Ruskin FL
Contact:

Re: (mcheddadi)

Postby D-Roll » Tue Feb 10, 2009 2:49 am

An HLSD would be awesome! I had an 02 SpecV with the HLSD, and what a difference.

User avatar
RobPaulson
Posts: 6577
Joined: Mon Jun 09, 2008 4:04 am
Car: 2013 Subaru WRX

Re: (D-Roll)

Postby RobPaulson » Tue Feb 10, 2009 4:17 am

i know i could google this . . . but you guys are sooooo good at putting this stuff in lamens terms . . .

whats does the HLSD ACTUALLY do??


psi101101
Posts: 242
Joined: Tue Oct 14, 2008 6:37 pm
Car: 2009 altima coupe 2.5s
Contact:

Re: (RobPaulson)

Postby psi101101 » Tue Feb 10, 2009 5:41 am

lol... the pictures mcheddaddi posted up ...im lost ...what we actually looking at.. IT DOES LOOK INTERESTING THOUGH

User avatar
Forrest80
Posts: 102
Joined: Thu Jun 12, 2008 2:51 am
Car: 2.5 CVT Altima coupe azure blue

Re: HLSD for the altima coupe! (mcheddadi)

Postby Forrest80 » Tue Feb 10, 2009 6:07 am

mcheddadi wrote:Ok this flyed under my radar, nissan released the Sentra SE-R and Sentra SE-R SpecV for 2007, 2008 and 2009. That we all know. but what I didn't know is that the SE-R has the SAME transaxle, SAME part number RS6F52A as the Altima coupe 6MT.

that fine and all but the Sentra SE-R SpecV also has the same transmission except one thing. it has a HELICAL LIMITED SLIP DIFFERENTIAL!!!! (HLSD)

Part number is RS6F52H for the 6MT HLSD equipped Sentra and RS6F52A for the non equipped one and ours.The only difference would be the final drives:4.428 for the SpecV and 4.133 for the Altima coupe.

But the interesting thing here is that you can basically swap the Differential case assembly of the SpecV to the Altima coupe !!!!!!

This opens up soo much for anyone who wants to track the altima coupe or just get the BEST handling from a FWD car.

I'm going to start look for Sentra SE-R SpecV differentials or busted transmissions on ebay so I can get that HLSD for cheap!

Modified by mcheddadi at 1:46 AM 2/10/2009
http://forums.altimas.org/zerothread?id=354825

change of heart?

User avatar
dldjros69
Posts: 3170
Joined: Fri Sep 21, 2007 3:52 pm
Car: 2012 Evo Gsr
A/C 2.5 Turbo 6MT (SOLD)
Location: Quakertown Pa
Contact:

Re: HLSD for the altima coupe! (Forrest80)

Postby dldjros69 » Tue Feb 10, 2009 6:15 am

Whoa forrest a blast from the past, nice find...

@psi - that is a diagram of the 6mt tranmission housing

the other pictures are of the differential and the HLSD


User avatar
D-Roll
Posts: 1501
Joined: Tue Nov 20, 2007 3:24 am
Car: 08 Nissan 350Z Touring Coupe
Location: Ruskin FL
Contact:

Re: (RobPaulson)

Postby D-Roll » Tue Feb 10, 2009 7:03 am

RobPaulson wrote:i know i could google this . . . but you guys are sooooo good at putting this stuff in lamens terms . . .

whats does the HLSD ACTUALLY do??
Both wheels spin when driving rather than 1 wheel spinning all of the time. Meaning when you burnout, you'll see 2 tire tracks instead of one

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (RobPaulson)

Postby mcheddadi » Tue Feb 10, 2009 8:10 am

RobPaulson wrote:i know i could google this . . . but you guys are sooooo good at putting this stuff in lamens terms . . .

whats does the HLSD ACTUALLY do??
The Ultimate Differential

The Helical LSD enables a car to accelerate more rapidly and corner faster. How?Simply by getting the power to the ground.

With an normal open differential, fitted as standard on most cars, much precious power is wasted through wheel spin under acceleration. This happens because the open differential shifts power to the wheel with less grip - along the path of least resistance.

The Helical differential, however, does just the opposite. It senses which wheel has the better grip, and automatically biases the power to that wheel. It does this smoothly and constantly, and without ever completely removing power from the other wheel.

In cornering, while accelerating out of a turn, the unit biases greater power to the outside wheel, reducing inside-wheel spin. This allows the driver to begin accelerating earlier, exiting the corner at a higher speed.

The Helical differential also controls loss of traction when the drive wheels are on slippery surfaces such as ice and snow or mud, providing the appropriate biased traction needed to overcome these adverse conditions. Power is transferred automatically without the use of normal friction pads or plates seen in other limited-slip designs.

The Helical LSD differential's unique design offers maximum traction, improves handling and steering, and puts the power where it is needed most. A definite advantage, whether on the track or on the street.

The Helical differential is extremely strong and durable, and since it is gear-operated, it has no plates or clutches that can wear out and need costly and regular replacement. There is no maintenance required to the unit, so you can fit and forget.

The Helical differential is great for street driving or racing. Racers don't have to put up with locking mechanisms or spools that tear the steering wheel out of their hands when cornering. Because it behaves like an open differential during ordinary driving, street drivers will have trouble telling it's there until pushing the cars towards its limits.

The Helical differential is proven in everything from SCCA Rallying to drag racing and Formula 1. It provides autocrossers with such an advantage, it has become "required" equipment for a winning effort.

Expand your vehicle's limits with an Helical LSD Differential!

http://www.youtube.com/watch?v=vcSAiRxmm0w (this videos shows the benefit of having a HLSD, which is a type of torque sensing LSD, on a FWD car )

spockrock
Posts: 1170
Joined: Fri Feb 01, 2008 3:10 pm
Car: Altima Coupe 3.5se

Re: (D-Roll)

Postby spockrock » Tue Feb 10, 2009 8:41 am

D-Roll wrote:
Both wheels spin when driving rather than 1 wheel spinning all of the time. Meaning when you burnout, you'll see 2 tire tracks instead of one
No, this not true, in our case an open differntial both wheels spin no matter what, with a limited slip diff, if one wheel looses traction then power is transferred to the wheel with grip.

User avatar
dldjros69
Posts: 3170
Joined: Fri Sep 21, 2007 3:52 pm
Car: 2012 Evo Gsr
A/C 2.5 Turbo 6MT (SOLD)
Location: Quakertown Pa
Contact:

Re: (spockrock)

Postby dldjros69 » Tue Feb 10, 2009 9:30 am

spockrock wrote:
No, this not true, in our case an open differntial both wheels spin no matter what, with a limited slip diff, if one wheel looses traction then power is transferred to the wheel with grip.
This is what i was told when i purchased my car. Power is given evenly to both wheels. Both wheels power the car. On my neon 1 wheel powered the car.

spockrock
Posts: 1170
Joined: Fri Feb 01, 2008 3:10 pm
Car: Altima Coupe 3.5se

Re: (dldjros69)

Postby spockrock » Tue Feb 10, 2009 12:28 pm

dldjros69 wrote:
This is what i was told when i purchased my car. Power is given evenly to both wheels. Both wheels power the car. On my neon 1 wheel powered the car.
I think there is some confusion, with an open differential, both wheels spin the same, if you have a 3.5 with VDC it has an eLSD which tries to accomplish the same as an LSD where if one wheel spins then it transfers power to the wheel with grip.

power isn't going to just one wheel all the time, that would be bad, but but power goes to to one wheel when one wheel slips. So for cornering its good because as Mcheddadi mentioned that, when you take a corner hard your inside wheel actually lifts off the ground, then power is transferred to your outside wheel and while the power is the same, more of it is going to the ground.

User avatar
Hussain
Posts: 3162
Joined: Mon Oct 22, 2007 10:54 pm
Car: 08 Altima Coupe 3.5se CVT

Postby Hussain » Tue Feb 10, 2009 4:40 pm

its been said that the older maximas have an LSD but it can not be fitted to our cars, what about the new maxima? its nissans 4dSP (4 door sports car) it should have one and if it does, it should work for the CVT guys right? since the 09 maximas are all CVT with a VQ35DE and built on the "D" platform. can someone check if they have an LSD and if it would work for the CVT guys

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (Hussain)

Postby mcheddadi » Tue Feb 10, 2009 5:43 pm

I'll go check !

User avatar
Hussain
Posts: 3162
Joined: Mon Oct 22, 2007 10:54 pm
Car: 08 Altima Coupe 3.5se CVT

Re: (mcheddadi)

Postby Hussain » Tue Feb 10, 2009 6:13 pm

one site i looked at said the maxima doesnt have a LSD..... hopefully that site was wrong and it does have one and it will work with the CVT guys

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: (mcheddadi)

Postby mcheddadi » Tue Feb 10, 2009 6:43 pm

mcheddadi wrote:I'll go check !
Ok here's what I found for you CVT guys

The CVT for the ALTIMA 07-08 2.5L is codenamed RE0F10A and it's basicly a JATCO transmission (codename: JF011E)and the CVT for the 3.5L is codenamed RE0F09B and is also JATCO built transmission (codename: JF010E)

here's a diagram from the 3.5L CVT http://www.automaticchoice.com...a.pdf

you can see that the differential looks exactly like the one we have on the 6MT. so there's hope that you cvt guys could benefit from the HLSD, since it could fit, But I don't know how that would work with the CVT.

the cvt for the 2.5L on the other hand, well there is NO chance it can work at all since its a unit shared by Mitsubishi, Suzuki, Chrysler and Nissan ( http://www.automaticchoice.com...e.pdf ), and it's not the same size (I've checked the FSM's cross-view diagram)

for anyone who wants more here's an indepth look at how the cvt works (the smaller cvt transmission from the 2.5) http://www.gearsmagazine.com/i...8.pdfh ... /i...4.pdf

User avatar
RobPaulson
Posts: 6577
Joined: Mon Jun 09, 2008 4:04 am
Car: 2013 Subaru WRX

Re: HLSD for the altima coupe! (mcheddadi)

Postby RobPaulson » Wed Feb 11, 2009 5:25 am

ok well mcheddadi that was an A+ writeup of what the HLSD actually does.

why's this gota be such an expensive part!!!! it sounds like so much fun . . . but if i do anything with $500 its going in a savings account for my Ti-C . . . deng limited funds =(

User avatar
mcheddadi
Posts: 6666
Joined: Thu May 17, 2007 2:24 pm
Car: R8

Re: HLSD for the altima coupe! (RobPaulson)

Postby mcheddadi » Sun Feb 15, 2009 9:36 pm

Ok so if the tranny swap is like the ones the maximas do I dont need to remove the engine

only the wheels, the front driver side axel, then the exhaust, the starter, the slave clutch cylinder, the air intake, the battery , the I got access to the tranny. I just emailed jimwolftechnology to know if they have a compatible clutch upgrade or flywheel upgrade since It'll be easily accessible with the tranny out . I'm going to try it out when it get hotter and the snow melts away.


Return to “Altima Coupe (2008-2013)”