Hey,

Please excuse me if the question is rather, well...newbie in nature.

How do I absolutely confirm HLSD.

I drove a Max during my test drive without LSD. Then I ventured upon one with LSD option installed. Didn't have a preference on this option until experiencing LSD (it would seem).

Max w/o LSD was way to easy to break loose while the Max with LSD (the one I now own, thank you) seemed to need more effort in breaking the tires loose if you really wanted to. I am raising this question because it rained here yesterday for the first time since my purchase about two weeks ago and I noticed that the car seemed to want to run a little sluggish when pressed a little harder. Not that it was slow but that the wheels were kinda resisting pressure for speed and wheelspin and more in search of traction and grip. I was looking for a SLIP light or something to come on.

How do you really know when LSD is working and where can you visually confirm the LSD unit?

I notice on dry pavement also that if you start out of first gear just right, you can really get a good start and traction without "barking the dogs" but on the Max w/o LSD you have to be extra careful getting that torque to the pavement.

Can you ladies/gentlemen enlighten me please? Thanks!

 

Use Search, that's how. Hint (drilled metal petals).

 

you must have seen some everlasting flowers and shrubs...

 

? Are you saying that I have seen the light? The longer you are on the board the more you see the same questions.

 

nope, just messin' around...

long lasting plants....metal peTals....oh well as you can see, very long dull day here at the office

 

I second that.

 

I 3rd it.....but its Friday right...

 

Thanks? I did SEARCH before asking but maybe I should have gone through the all threads with a finer tooth comb. It seems I'll need to that again anyway but thanks for the "hint".

~T!

 

this actually isn't as bad a question as everyone is making it out to be. What about resale? If everyone says "you can tell HLSD by drilled petals" ... well, it'd be better to see the original window sticker. What's to keep someone from buying the petals then reselling the car as "HLSD equiped"?

Check the original window sticker (and match the VIN), or take apart the tranny... those are the only *REAL* ways to know if it has HLSD. This mod-happy group should have pointed this out by now.

 

Drive one of each.

Stereodude

 

What are you guys talking about? HLSD to petals? what?


1st person who started this thread... the LSD unit is in part of the differenctial and is mechanical, no lights, no signals, it locks up the differential when it detects slip (as in one side spins faster than other side). Then it locks up so both wheels will spin at the same speed. That's why on dry pavement it seems you have more traction and will get going faster instead of wheel hop or one wheel spinning or burning out. On water (rain), instead of one wheel slipping and you not going anywhere. It'll lock up and both tires may now slip because of wet pavement. Therefore it'll seem it take it a bit longer to get up to speed. Water makes pavement slippery. So that's why it may feel sluggish on wet pavement. Unless you're talking about traction control.. (TCS only on Autos and they don't come with HLSD or LSD) That's done electronically, and the ECM will cut fuel (loose) power or apply some brakes to the wheel that's spinning faster to compensate wheel spin and therefore allowing the wheel that's slipping to slow down and then transfering some torque to the other wheel.

Hope this is the answer that you're looking for. Other than that you won't feel the HLSD or LSD driving normally. It only locks up when there's slip. You can't detect it unless it slips (one wheel spin) But the mechanical unit will detect it.

 

The only "external" way to tell if a Max has HLSD is it comes with a package that includes drilled gas/brake/clutch petals. Other than that there's no way to tell without paperwork or taking apart the tranny.

 

Yes you can. By jacking up the car and rotate the front wheel, just one wheel and you'll notice the other side will turn as well.

 

Young and Wannabe,

Thanks for your explanatory replies. It helped a lot.

Regards,

 

a quick search in the 2k2 forum give a bunch of "that works/no it doesn't" arguments.

so which is it??? Does spinning one wheel indicate LSD or not? I don't know **** about cars so I'm curious to know, too. Much of what I learned about cars I learned here so I'm starting to believe every car on the road is modded to some extent

 

oh pedals... I see.. Wasn't really reading. I think I read that only the 6 speed ones which are manual tranny with HLSD will have the alluminum gas pedal and the skins on the brake and clutch pedal. The automatics don't come with HLSD. So there... once and for all you now know. The HLSD is only available on the 6speed manual for 2002 and for 2001 only on the AE Stick of course. THere, that should settle it. Only manual trannys will have them. But as for 2002 early and late models... that's another story, I would say you'll have to look at the sticker or have the dealer search VIN numbers. see when the build date is to get a better clue. That info should be on the info plaque on the car somewhere, either in engine compartment or driver door jam.

 

I thought the aluminum drilled pedals were just part of the Anniversary and now the Titanium package? If they actually come on just cars with HLSD and on no cars with automatic, then how was I able to order the AE pedals and get one for the larger automatic brake pedal?

I guess maybe ALL The AE Maximas came with those pedals and now on the 2k2's and 2k3's they only come on the ones with HLSD?

 

Want pictures?

 

If you are spinning one wheel you DO NOT have the HLSD. Now that being said, it is possible to rev up to 5k rpms and drop the clutch and spin both tires in a non-HLSD car. But an HLSD car will never ever spin just one wheel. I wonder if its possible to purchase the LSD from Nissan and install in on a non-HLSD car. That would be a great mod for me.


Jesse

 

I keep telling you to drive one of each at the dealer and the go drive your own and see which one it drives like. I honestly don't know how their could be so much confusion about this. To me the HLSD really stands out when driving the car.

Stereodude

 

I am looking into this..

 

If you don't trust the drilled aluminum pedals then what you need to do is pop the hood and observe the tranny code stamped on the aluminum plate which is riveted to the firewall. The same plate that shows the VIN, the engine code (VQ35DE) will show the trans code. Nissan names their gearboxes almost the same way that they name their engines. The code for the HLSD equiped 6 speed is RS6F51H. The 'H' suffix denotes the Helical device. The 6F I believe denotes 6 forward gears. Other suffixes I know of include 'A' and 'V'. My '98 Maxima had RS5F50A. The 'A' meant the car had a regular diff. But my old SE-R has RS5F32V and of course the 'V' represented the viscous coupling limited slip diff. Perhaps someone could confirm for us that their non helical equiped transmission is coded RS6F51A.

Ethan?

Also, as I have mentioned before, you cannot confirm you have a helical if your car is up on a lift. Both wheels will not be locked to each other and will each spin freely or opposite each other. The helical only works when torque is applied to the ring gear itself.

 

SO HLSD was an option for 02-03 maxima's? And after the 6spd's are rare enough let me guess the hlsd are even rarer to find in the 6spd?

 

Yes. When i was looking at 6 speed to replace my totalled 02. Out of about 7 6 speeds i looked at the only one that had hlsd was the one i purchased. I don't believe they made too many hlsd cars that were not pretty much loaded. As far as noticing the hlsd feature i do. The car tracks harder around corners as when i'd corner hard on my auto it feel like one of the front tires was tucking in and lossing power....

 

How much is it to have one of these hlsd installed? And does it really make that much of a difference other than those nice interior decorations?

 

I believe it makes a difference like i stated in my post. The car corners much better and i also notice i don't have all that tq steer i had with my auto. The wheels just seem to bit and the car pulls hard....I had a good amount of tq steer with my auto and it use to drive me crazy. Don't know how much to have installed buy i think someone on the org installed one on there non-hlsd car.....

 

hlsd was only an option for titanium edition maximas. you can find an aftermarket hlsd for about $300-900+install costs.
it is better for rain and snow conditions.
only you can be the judge if it's worth to purchase a nissan or aftermaket unit to put on your car. my car came with it, so it's nice. if it did not, i dont think i would spend the money to put one on.
most non-performance oriented vehicles dont have it.

 

Well ofcourse I want the hlsd but its real tuff to find a titanium edition maxima with low miles and manual. But hey thanx for all ur help guys I really appreciate I have found a few but one has like 53000 miles on it and its a 02 but idk if thats too high mileage.

 

Not true. HLSD was an option on 2002 and Titanium Edtion was only aval. in 2003. http://www.autotrader.com/fyc/vdp.js...dist=17#vdptop
This car has HLSD and its a 2002. I've seen the car in person so i know it has HLSD a friend of mines was gonna buy it but they don't want to come down on the price....

 

Yes thats confirmed if it has the code RS6F51H then it has the hlsd and if it has the code RS6F51A then it has no hlsd.

 

thats funny...my 02 has it IIRC the 6spds came out late in 01 and the HLSD was an open even later than that. I could not see driving a 6spd max without it...

 

Yup, mine has HLSD and its a 2002....

 

No one makes an aftermarket "Quaife" for the 2002-2003?

 

This thread is more than 3 years old..

 

Yeah, and I posted in it 3 years ago.

I just wish my HLSD was still working. If I could get my hands on a replacement I would replace the one in the car.

 

In my opinion, (and I am interested to hear from those who disagree), the LSD will help most in the two following ways:

1) Launching the car - LSD will certainly help you launch from a stop much better than with no LSD. Most people can relate it to a "posi-track' rear end on an american muscle car. Without it, the wheel that has the least traction will be free to spin, which is bad, as you would ideally want the wheel with the most traction to spin. LSD ensures that both wheels are propelling the car forward , providing better launch times and less overall wheel spin.

2 - Turning the car at or near the limit of the tires' traction- To me this is the most important funcion of the LSD on my Max, as I try to avoid drag racing often. When going through a turn, the outside wheel plays a critical role. Not only does this wheel support a large portion of the car's weight, but this wheel must also rotate faster than the inside front wheel. Without LSD, power is more easliy sent to the inside wheel, where it is less needed. With LSD, the power is sent to the outside front wheel where the power is needed most. This allows the outside front wheel to get the power it needs to maintain traction and pull the car through the turn. This is where the HLSD really shines and others with LSD can and will certainly attest to this.

I'm sure there are much more in-depth, more complicated explanations out there on exactly what the HLSD does mechanically but I hope this helps explain it. You have made an excellent choice in selecting the LSD option on your Maxima.

P.S. Do yourself a huge favor and get rid of the Potenza RE92s ASAP(assuming they put those on the 02s as well)!!!

 

my bad, i remembered something abut te and hlsd. either its standard with te, or only availible with te.

when the car is leaning into a turn, the inside wheel gets more weight, no?

 

Theoretically, LSD helps in launching the car, but practically, I think several experienced guys on here have seen hardly any improvement in the their 60' times...

See this thread: http://forums.maxima.org/showthread.php?t=397419 Posts #26 and #30 by Nealoc and Jime. Mardi did say that it helps the 330' somewhat though.

Agreed, I believe with an open differential, power chooses the path of least resistance, so it will go to the wheel with least traction. With HLSD, the power will remain with the wheel with the most traction. And yes, you can feel it taking corners, esp when accelerating out of a corner in wet conditions.

dump em ASAP.

 

steps to tell if you have lsd or not:

1.) pull e-brake
2.) dump the clutch a lil
3.) check to see if there's two black marks or one
4.) ???
5.) Profit

 

Why the hell did you bring this thread back telling false info?