Swapped open diff tranny with 04 6-spd HLSD
#1
Swapped open diff tranny with 04 6-spd HLSD
I brought this up a while back and finally did it.
My 6-speed had the 3rd gear grind and was way out of warranty. The open diff was killing me on the street and drag strip after all the mods on my car.
I found an 04 38,000 mile 6-speed HLSD unit in a salvage yard in Canada. The 04 unit has better syncros and a lower final drive ratio.
I have to say I really like it. The install was very smooth. The trannys are a direct swap. The only difference is the piece the shifter cable attaches to uses a snapring on the o2 and a cotter pin on the 04. I just swapped the piece to keep it the same. No problem.
The car launches much better and doesn't spin like crazy now. It used to spin like crazy shifting into second also. Now it hooks much better. I could actually break a tire loose in the top of second gear just by getting on it all the way. It doesn't do that now either.
The shifting is much smoother. Third gear is great but all the gears seem smoother. My old tranny did have just over 100,000 miles though.
The only draw back is the RPMs are higher on the highway because of the shorter final drive. It's only a little bit though. Around town it's fine. The acceleration seems faster because of it.
Nissan is good about replacing the trannys with the 3rd gear grind but if you're out of warranty this is a great fix.
I got the tranny for $850 shipped and found a shop to buy my old tranny for $150 as a core.
My 6-speed had the 3rd gear grind and was way out of warranty. The open diff was killing me on the street and drag strip after all the mods on my car.
I found an 04 38,000 mile 6-speed HLSD unit in a salvage yard in Canada. The 04 unit has better syncros and a lower final drive ratio.
I have to say I really like it. The install was very smooth. The trannys are a direct swap. The only difference is the piece the shifter cable attaches to uses a snapring on the o2 and a cotter pin on the 04. I just swapped the piece to keep it the same. No problem.
The car launches much better and doesn't spin like crazy now. It used to spin like crazy shifting into second also. Now it hooks much better. I could actually break a tire loose in the top of second gear just by getting on it all the way. It doesn't do that now either.
The shifting is much smoother. Third gear is great but all the gears seem smoother. My old tranny did have just over 100,000 miles though.
The only draw back is the RPMs are higher on the highway because of the shorter final drive. It's only a little bit though. Around town it's fine. The acceleration seems faster because of it.
Nissan is good about replacing the trannys with the 3rd gear grind but if you're out of warranty this is a great fix.
I got the tranny for $850 shipped and found a shop to buy my old tranny for $150 as a core.
#2
Originally Posted by Derrick2k2SE
My 6-speed had the 3rd gear grind and was way out of warranty.
...
...
Nissan is good about replacing the trannys with the 3rd gear grind but if you're out of warranty this is a great fix.
...
...
Nissan is good about replacing the trannys with the 3rd gear grind but if you're out of warranty this is a great fix.
#3
Yes it is. Some of the 02 trannys had a very weak 3rd gear syncro. They grind when shifting into third at high RPMs. A lot of them were replaced under warranty.
I bought the car with 70,000 miles. I found out the car had an extended powertrane warranty and almost had it replaced but the warranty wasn't transferable.
I bought the car with 70,000 miles. I found out the car had an extended powertrane warranty and almost had it replaced but the warranty wasn't transferable.
#4
Originally Posted by Derrick2k2SE
Yes it is. Some of the 02 trannys had a very weak 3rd gear syncro. They grind when shifting into third at high RPMs. A lot of them were replaced under warranty.
#6
Originally Posted by knight_yyz
Hey guys, this third gear grind you are all talking about... Is it just a small grunch? Or is it a full blown can't get it into gear ?
#10
Originally Posted by EH STEVE!!
Hey Derrick
I might have to meet up with ya to feel what kind of power you've gained with all the mods.
Steve
I might have to meet up with ya to feel what kind of power you've gained with all the mods.
Steve
If not I sell cars at the Acura dealer just north of 295 on Blanding. I'm up there from 9 to 9 tomorrow. I can cruise out almost any time though. Stop buy and see me or send me a PM.
#11
Originally Posted by Derrick2k2SE
Nissan is good about replacing the trannys with the 3rd gear grind but if you're out of warranty this is a great fix.
#13
Originally Posted by Maxima-Ness
wow. I never knew about this. Ive never had a problem with mine. Was it all of them or just some? I reckon if it were all of them, it would have been a recall.....
None of my gears grind.... yet.
#18
Originally Posted by Puppetmaster
Nice job with the swap Derrick.
#19
Originally Posted by boondoxmax
6 GENS also have the 3rd gear grind problem and they shifting is still notchy on them too. I basically the same tranny........
#20
Originally Posted by Derrick2k2SE
Thanks, did you see the pics of the headers with the tranny out of the way?http://forums.maxima.org/showthread.php?t=467988
#21
Originally Posted by boondoxmax
6 GENS also have the 3rd gear grind problem and they shifting is still notchy on them too. I basically the same tranny........
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