G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

By popular demand. 5AT to 6M swap

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Old Jul 15, 2008 | 11:11 AM
  #1  
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By popular demand. 5AT to 6M swap

Firstly, all the work was done by Nathaniels auto here in Houston. They did all the homework, legwork, and every other work on this swap. So i'm not going to get all the details right, but you guys have been asking for a thread about my swap, and i'll do my best.

Starts with a lot of money being paid to Nissan for a new transmission! Everything else was aftermarket parts. Clutch Net 6 puck clutch, lightweight flywheel, ect ect.


Clutch

Clutch housing

Super light flywheel


I had to buy a brand new center console from Nissan as well. After that, the E-brake had to be moved. (I wasn't wanting 4 pedals!) The guys at Nathaniels had to re-work the parking brake cables. Pedals had to be bent, because the auto cars are just a bit different.

After we unbolted the auto,

(our starter is sexy)

Got the new tranny bolted up (which was the only thing that was an easy bolt up job) we realized the driveshaft was too short. After hassling with nissan to send us another, they sent us 2 different driveshafts first, one was for the 350z, and the other was dented all to hell. I finally got it in.

Next problem was the ECU. Obviously it had to be replaced, so after I got the manual ECU in, Nathaniels had to make the wiring work, which from what I gather, was a nightmare.

We left the gearing the same, so I have automatic gearing on a manual gearbox. It's geared lower, so I get a bit more acceleration it seems, which i'm happy about.

Sorry I couldn't go into more detail, I wasn't hands on very much with this project. Sad to say I don't have the skill for these bigger projects. I leave it to the pros

Here is a photo I snapped the day I picked it up.


I doubt I did, but I hope I answered a bit of questions. Mainly that it is NOT an easy task, LOTS of custom brackets, and fabrication. Something you can't do in your house garage!

Thanks guys!

Julius from the shop said if any of you have a question, he'll be glad to answer them. Their website is http://www.nathaniels.com/home.shtml (currently having a complete makeover on the site)

Their number is 713-780-8666
 
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Old Jul 15, 2008 | 12:15 PM
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Wow.

 
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Old Jul 15, 2008 | 12:19 PM
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Thanks for the post, you may want to move your thread to the Engine, Drivetrain & Forced-Induction section it will get more love there.

Do you mind telling how much it cost? Most people here will tell anyone who asks that it is cost prohibitive and you'd probably come out ahead just trading in and buying a 6MT G.

I'm not trying to do a swap anytime soon but I am keeping my G35 for at least another 7 to 8 years so when it comes time to buy a new car in a few years I plan on turning the G35 into an all out weekend track car, so a tranny swap may be in the equation. And at that point I wouldn't trust buying a used G35 whereas I know I've taken every maintenance precaution with my own car.
 
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Old Jul 15, 2008 | 12:20 PM
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props but if are still at 3.3 final drive that ur car is not faster than u were with automatic. Since doing all that work u should've just went with 3.9 or 4.001 final drive to make huge improvement in acceleration on the car compared to automatic 3.3.

It looks like a lot of work though for a tranny swap.
 
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Old Jul 15, 2008 | 01:43 PM
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good work
I also dream about tranny swap for TT
what was the most difficult and easiest ?
are the 350z and G35 tranny the same ?
 
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Old Jul 15, 2008 | 02:13 PM
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The word "custom" used means this was expensive and probably not for the faint of heart nor light of wallet.
 
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Old Jul 15, 2008 | 02:15 PM
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8k in parts, then labor which was 2k
 
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Old Jul 15, 2008 | 02:19 PM
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From: Pothole Central and still ridin slammed...Boston
....How come you just didnt buy a manual instead
Originally Posted by Citco
8k in parts, then labor which was 2k
 
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Old Jul 15, 2008 | 02:22 PM
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Originally Posted by Citco
8k in parts, then labor which was 2k
I can get the parts for less than 8k. 2k is really reasonable for this swap. I'll definitely ship my car over to them to perform this swap......eventually.
 
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Old Jul 15, 2008 | 02:29 PM
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10K for a MT change over, thats ridiculous and def. a waste of money!
 
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Old Jul 15, 2008 | 02:56 PM
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why would you do this? why not just buy a 6mt? not trying to be a smart ***, just wondering if there is a legit reason.
 
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Old Jul 15, 2008 | 03:13 PM
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Originally Posted by ShanesG
10K for a MT change over, thats ridiculous and def. a waste of money!
^+1
 
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Old Jul 15, 2008 | 03:18 PM
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Why would you do an MT swap? Gains < $$$$ . If i am wrong then please correct me.
 
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Old Jul 15, 2008 | 03:23 PM
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Damn, that's even more than I've estimated in prior threads regarding the swap. My guess was around $5K in parts and about $2K+ in labor, most of which being the harness issues.
 
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Old Jul 15, 2008 | 03:24 PM
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Originally Posted by Klubbheads
props but if are still at 3.3 final drive that ur car is not faster than u were with automatic. Since doing all that work u should've just went with 3.9 or 4.001 final drive to make huge improvement in acceleration on the car compared to automatic 3.3.

It looks like a lot of work though for a tranny swap.
It appears that he has a turbo therefore the taller 3.3 gearing is more ideal. With a turbo, you don't all that torque multiplication.
 
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