manual Swap

DEpointfive0 · 07-31-2013, 01:25 PM

Quote:

Originally Posted by kmkraft12

I would assume that if nissan said that the tranny was good up to 500 they would be correct about it. They wouldn't advertise that. I guess they probably couldn't be sued for it but I still doubt that they would advertise 500. That is assuming that they were the ones to advertise that and not someone else. I just kind of assumed that they were the ones who said that. If not then I wouldn't trust whoever first said that.

I still haven't a clue what you're talking about.
You're making it seem like Nissan has claimed that the transmission can take that power.
And I GUARANTEE they haven't and WON'T EVER say something like that

dP3NGU1N · 07-31-2013, 01:26 PM

Quote:

Originally Posted by XwChriswX

Stock v Stock, sub-par driver, the Auto is .1 seconds faster on the strip, so change the driver, change the result.

It's not the power that kills the AT, its the Torque. Supposedly the 7AT can safely handle up to 400ft-lbs. After that its

area.

I just figured it would be more consistent throughout since there's less room for human error in any given circumstance. for example you're not likely to miss shift in the automatic.

Ofcourse driver skill is always a factor. In then end it's up to the owner to decide what the best direction for the car is. I was just making a broad generalization based on other threads on the forums (the infamous at vs. mt nonsense)

GL with your decision OP, definitely do some exhaustive research before making a leap like this.

theDreamer · 07-31-2013, 02:12 PM

Nissan has never said the 7 speed auto is good up to X horsepower.
Some light reading: Forced Induction & 7AT 370z Info

Chuck33079 · 07-31-2013, 02:18 PM

Quote:

Originally Posted by DEpointfive0

Yeah, I'd for sure see the VB, MAYBE the flex plate and torque converter. I'd almost rather wait for those to fail.

Even with all of those parts replaced, the clutch packs in gears 5-7 are still too small to take a lot of power. Replacing those, adding a trans cooler and upping the line pressure would help, but torque will eventually kill it. The only solution so far is to call GTM and give them all of your money for one of their built autos.

It's still probably cheaper than swapping to a manual. The one guy that did it had to swap a lot of stuff out just to get it to run.

bghoward · 07-31-2013, 02:37 PM

Wouldn't it just be cheaper to sell your car and buy a used 6MT Z? You might even be able to break even if you did it all private party. Much better then spending $1000s and the headaches involved in a swap.

Megan370z · 07-31-2013, 02:37 PM

I just got back from work , I will post something up soon

critical · 07-31-2013, 03:41 PM

Keep the 7AT. Hit up GTM about upgrades. Oil cooler, transmission cooler and some transmission upgrades should set you straight.

Chuck33079 · 07-31-2013, 04:01 PM

Quote:

Originally Posted by critical

Keep the 7AT. Hit up GTM about upgrades. Oil cooler, transmission cooler and some transmission upgrades should make you broke.

Fixed. But still probably cheaper than trying to swap to a manual.

critical · 07-31-2013, 05:06 PM

Quote:

Originally Posted by Chuck33079

Fixed. But still probably cheaper than trying to swap to a manual.

yeah, I'm trying save him some money lol

DEpointfive0 · 07-31-2013, 05:24 PM

Quote:

Originally Posted by Chuck33079

Even with all of those parts replaced, the clutch packs in gears 5-7 are still too small to take a lot of power. Replacing those, adding a trans cooler and upping the line pressure would help, but torque will eventually kill it. The only solution so far is to call GTM and give them all of your money for one of their built autos.

It's still probably cheaper than swapping to a manual. The one guy that did it had to swap a lot of stuff out just to get it to run.

Yeah, but how often are you going to be using all the power in 5th-7th? 5th takes you to 155 the limiter and I think 4th goes to 120~

But yeah, I agree, torque wil kill it. Better to SC the autos

Chuck33079 · 07-31-2013, 06:55 PM

Another thing to try to keep the 7at alive would be to get a good boost controller and set it up where the boost comes on slowly. That huge torque spike on spool up is going to be what eventually kills it.

Megan370z · 07-31-2013, 07:25 PM

Quote:

Originally Posted by megalapagas

Back to the drawing board, luckily I hadn't bought it yet good thing I asked. Need to do more research, my purposes were for Tracking no drifting. Thanks

What is your big reason to do the swap ?
you mentioned there that you were thinking about tracking the car.

But how much tracking will you do ?
next
what type of tracking ? could be road race / time attack / lapping days / HPDE / autocross.

so if you DO NOT intent to participate in any road race or hardcore time attack meaning pushing the tranny & car to 110% !!! and concerned about the fraction of second you needs over other peoples.
I strongly suggest you to keep the 7AT.

If you only intent to do lapping days / HPDE / autocross.
I strongly suggest you to keep the 7AT.

Why did I swap the 6MT??? It is mostly because I blew one of my VVEL head.
the next plan was to swap the HR head on the VHR block which would need the HR ECU.
I already had an engine/tranny spare hiding in the garage of my cousin from my 350z times.

so doing the swap from nothing will cost you an arm !
then its up to how much you are willing to keep everything OEM looking
For my case I don't really care about all those red light that pop up on the dask cluster. (ABS/VDC/Airbag/Key/engine codes........

On the 350z side, one of the guy kept his Auto ECU and it was working fine.
IMO, I would stick with an ECU which is setup for the 6MT.

the bare minimum is

Clutch Pedal assembly
Clutch Master Cylinder
Clutch Master Cylinder Oil Reservoir
Cutch hose up to the Clutch Slave cylinder
*option* HD CSC (lookup Z1 one...)
Flywheel/clutch ( I took the JWT combo ) *They have 2 version of clutch* (organic only & organic/metallic )
Flywheel BOLTS !!!
Clutch/pressure plate BOLTS !!!
6MT
Will it come with the shifter assembly ? if not , you need this too !

once this is installed, you might want to get the gasket/plate/boots assembly that bolt on directly on the frame/floor
Part # 74963 , 75960N , 74940

then I will let you find the platic interior trim that you might want for OEM looks.

The OEM 7AT cluster (RPM/Speedo) will work just fine with the 6MT. you will not have the same functionnaly as what the true 6MT 370z has..
At that point again its up to you to find that part...

Don't think about the Rev-Matching option .. at this point you are better selling the car as is and get the 6MT !

once everything has been installed. you will need a little wiring job.At this point then its up to you to look into the FSM to find what needs to be done.
I cant really help you on this because Im using the HR ECU.

But you will need to find out how to wire up the Neutral Position Switch and the Back-Up Lamp Switch to your ECU/BCM.
Without those 2 sensor switch on the 6MT , you will not be able to start the car or/and get the back up light to lid!
You will not have the same wire setup as the 6MT on the BCM side because yours is 7AT. IF you can understand a wiring diagram, you will be able to wire them to make it work, as I did.

So you still want to do the 6MT swap on your 7AT 370z ?

If not ,

Quote:

Originally Posted by critical

Keep the 7AT. Hit up GTM about upgrades. Oil cooler, transmission cooler and some transmission upgrades should set you straight.

megalapagas · 08-01-2013, 05:00 AM

Thx a lot man for clearing my head before I jumped on the gun which I was this coming week hahaha, but in all seriousness I believe I'm keeping my AT after seeing your post and rather invest my money in a built AT tranny or maybe just for a on a VB and then fix certain bumps down the road, Thanks to all for the info.

DamnThatZGuy · 10-29-2019, 12:15 PM

Damn, I want to do the manny swap so bad but don't wan't to find another Z because I'll never be able to find another one like mine. I have a 2009 with 38k miles on it and it's BEAUTIFUL. If it was a manual it would be the PERFECT 370!

07-31-2013, 02:12 PM	#18 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4210	Nissan has never said the 7 speed auto is good up to X horsepower. Some light reading: Forced Induction & 7AT 370z Info __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

07-31-2013, 02:37 PM	#21 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 23	I just got back from work , I will post something up soon __________________ Megan Journal Click Me ....................One Man Team Motorsport Click Me

07-31-2013, 03:41 PM	#22 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 15	Keep the 7AT. Hit up GTM about upgrades. Oil cooler, transmission cooler and some transmission upgrades should set you straight. Streetlife likes this.

07-31-2013, 06:55 PM	#26 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Another thing to try to keep the 7at alive would be to get a good boost controller and set it up where the boost comes on slowly. That huge torque spike on spool up is going to be what eventually kills it. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-01-2013, 05:00 AM	#28 (permalink)
megalapagas Enthusiast Member Join Date: May 2013 Location: McAllen,TX Posts: 457 Drives: '10 370Z Tour A/T Rep Power: 11	Thx a lot man for clearing my head before I jumped on the gun which I was this coming week hahaha, but in all seriousness I believe I'm keeping my AT after seeing your post and rather invest my money in a built AT tranny or maybe just for a on a VB and then fix certain bumps down the road, Thanks to all for the info. Megan370z likes this.

07-31-2013, 02:37 PM	#20 (permalink)
bghoward Base Member Join Date: Jun 2012 Location: Austin Posts: 4 Drives: 2012 370z 6MT+Sport Rep Power: 12	Wouldn't it just be cheaper to sell your car and buy a used 6MT Z? You might even be able to break even if you did it all private party. Much better then spending $1000s and the headaches involved in a swap.

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