S15 6 Speed Transmission for Dummies - Page 5 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

soundboy · 07-24-2015, 04:50 AM

The aluminum shafts make the most sense imo

***dorkidori_s13*** · 07-24-2015, 09:12 AM

Quote:

Originally Posted by soundboy

The aluminum shafts make the most sense imo

single piece drive shafts arent for everyone though. there is a bit of noise that comes with them since there is no rubber to dampen out drivetrain noise. also, unless you are really familiar with your gear ratios, gearbox rumble from trying to accelerate a too low of rpms can really shake the hell out of the car with a single piece compared to an OE 2 piece.

slow_sr20 · 07-24-2015, 12:47 PM

I had an aluminum in my last car. The noise it made was ungodly. I'm looking for oem like qualities. I was hoping for an inexpensive option for now. So does that mean the U.S. Spec auto shaft will work, or no?

shaggy0778 · 07-27-2015, 09:14 PM

Not my car, but a friend of mine in Jacksonville is making over 400whp on an s15 6 speed. He broke the original trans after 3-4 months of dailying/abuse including launching with 275 radials. He's now on his second

Mustang dyno:

itsjustdaphne · 09-04-2015, 08:33 PM

Quote:

Originally Posted by shaggy0778

Not my car, but a friend of mine in Jacksonville is making over 400whp on an s15 6 speed. He broke the original trans after 3-4 months of dailying/abuse including launching with 275 radials. He's now on his second

Mustang dyno:

And this one is done too.....

Time to go 350z trans, finally.
There's a video on my IG of how noisy it is.
The last trans did the same thing until it just didn't want to go into gear at all and I'd get stuck in neutral while driving.

Kingtal0n · 09-04-2015, 10:12 PM

If you drive it nice, it can last a long time at 400bhp. No hard launches, no slicks, no drifting, no terrible clutch kicks.

The only reason I am not using a six speed right now is because of their cir-clip issue.

itsjustdaphne · 09-27-2015, 01:23 AM

Riding in a tow truck at 3am. Just toasted the 3rd trans. Awesome.

mik5082 · 11-08-2015, 12:10 AM

circlip modification by neat gearboxes

https://neatgearboxes.wordpress.com/...x-circlip-mod/

ShakotanGazelle · 11-15-2015, 09:15 PM

so what do s13 6 speed guys use for driveshafts? the s15 one i have is too long and the carrier bearing is like 6" too far back.

slow_sr20 · 02-20-2016, 10:36 PM

If anyone is planning to ditch the dual mass flywheel, keep in mind that you will most likely need standard s13/s14 flywheel bolts. The s15 bolts are way too long. ARP seemed to be the cheapest. That's what I used with a Nismo/Autech flywheel.

slow_sr20 · 02-29-2016, 07:07 PM

Is there anyone out there with confirmed drive shaft fitment info? my car is s14/abs car. I purchased what i was told is a 6-speed s15 drive shaft. Fits into output of transmission just fine but is too long. The rear section from diff to carrier is off by 1/2" approx. The front section is entirely too long by probably 2-3". Anyone else compile any data? I figure i can locate a stock rear section and have the front section shortened, but was hoping for a bolt in solution.

Goldhawg · 05-25-2016, 08:42 PM

I have an Autech S15/6 speed that I'm swapping in a Datsun roadster. It has 60K miles on it. I'm thinking that I should at least replace the clutch disc before I install in the car. thoughts? What clutch disc should I get to replace the one I have?

rcefoonia · 08-15-2016, 09:54 PM

Amazing write up we don't even have this much info in AUS about the gearbox.

rcefoonia · 08-15-2016, 10:01 PM

dam great job on the post

chulme1234 · 09-29-2016, 11:01 AM

Quick question if somebody dosent mind answering....

Bought a S15 6MT to put on my SR20DE drift car

It came with the shifter, but no knob so I bought an eBay special, I've tested all the gears and its fine...

But how do I engage reverse?! I've tried pushing down and pulling up but no luck? Do I need a special gearknob to pull up?

Bit confused haha

Sorry if this sounds stupid!

Also sorry again for bumping an old thread

Sent from my E5823 using Tapatalk

***dorkidori_s13*** · 09-29-2016, 11:19 AM

its a 90s 6 speed... so probably just push all the way to left and up, or all the way to the right and up or down. no need to push down or pull up on the gear shift.

chulme1234 · 09-29-2016, 11:21 AM

Looking at pics on one of the first few pages and it's all the way across right and down, next to 6th, sure I tried that though

Sent from my E5823 using Tapatalk

dwnshft2drft · 09-29-2016, 11:31 AM

Quote:

Originally Posted by chulme1234

Looking at pics on one of the first few pages and it's all the way across right and down, next to 6th, sure I tried that though

Sent from my E5823 using Tapatalk

This is correct no downs or ups. If you still cant put it in reverse. Try the Japanese trick I posted.

chulme1234 · 09-29-2016, 11:42 AM

Quote:

Originally Posted by dwnshft2drft

This is correct no downs or ups. If you still cant put it in reverse. Try the Japanese trick I posted.

How does that work? Do you keep pushing to the right and try put it in reverse?

Sent from my E5823 using Tapatalk

dwnshft2drft · 09-29-2016, 11:51 AM

Quote:

Originally Posted by chulme1234

How does that work? Do you keep pushing to the right and try put it in reverse?

Sent from my E5823 using Tapatalk

Yes mate, while someones pushing the car reverse. Try it and let me know if this works. If it does I'll tell you what went wrong.

dwnshft2drft · 09-29-2016, 11:22 AM

Do you have it installed already?

chulme1234 · 09-29-2016, 11:23 AM

Quote:

Originally Posted by dwnshft2drft

Do you have it installed already?

Yes mate

Sent from my E5823 using Tapatalk

dwnshft2drft · 09-29-2016, 11:26 AM

Theres a reset trick. Have some one push the car reverse while you engage clutch then force it to reverse. I had the engine running and be safe though.

chulme1234 · 09-29-2016, 11:27 AM

Quote:

Originally Posted by dwnshft2drft

Theres a reset trick. Have some one push the car reverse while you engage clutch then force it to reverse. I had the engine running and be safe though.

What I'm asking is do you have to push the knob down or anything to put it in reverse?

I know how reverse works

Sent from my E5823 using Tapatalk

TheRealSy90 · 09-29-2016, 11:52 AM

All the way right and down how hard is that to understand.

chulme1234 · 09-29-2016, 12:24 PM

Quote:

Originally Posted by TheRealSy90

All the way right and down how hard is that to understand.

Because I didn't know that?

No need for the attitude.

Quote:

Originally Posted by dwnshft2drft

Yes mate, while someones pushing the car reverse. Try it and let me know if this works. If it does I'll tell you what went wrong.

Wicked cheers for the helpful comments buddy!

Sent from my E5823 using Tapatalk

dwnshft2drft · 09-29-2016, 12:53 PM

Quote:

Originally Posted by chulme1234

Because I didn't know that?

No need for the attitude.

Wicked cheers for the helpful comments buddy!

Sent from my E5823 using Tapatalk

No sweat mate! Hey wonder if you can help me out to find me a s15 evaporator box and s14a front bumper side cover/caps? (pictured)

dwnshft2drft · 09-29-2016, 12:40 PM

Quote:

Originally Posted by TheRealSy90

All the way right and down how hard is that to understand.

He's doing it right but he was just confused

TheRealSy90 · 09-29-2016, 07:14 PM

Okay when it's said two or three times and you keep asking...

Sent from my iPhone using Tapatalk

TheRealSy90 · 02-07-2017, 08:18 AM

Like they say, get an unsprung clutch disc since you're using the dual mass flywheel. That's all.

Sent from my iPhone using Tapatalk

09-04-2015, 10:12 PM	#6
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 41 Posts: 4,829 Trader Rating: (17) Feedback Score: 17 reviews	If you drive it nice, it can last a long time at 400bhp. No hard launches, no slicks, no drifting, no terrible clutch kicks. The only reason I am not using a six speed right now is because of their cir-clip issue. __________________ 5.3/4l80e/turbo 240sx playthrough: tinyurl.com/4l80er

09-27-2015, 01:23 AM	#7
itsjustdaphne Zilvia Addict Join Date: Sep 2011 Location: South FL Posts: 785 Trader Rating: (12) Feedback Score: 12 reviews	Riding in a tow truck at 3am. Just toasted the 3rd trans. Awesome. __________________ @ddaapphh \| @spectuned

09-29-2016, 11:19 AM	#16
*dorkidori_s13* ITS LISA'S FAULT!!! Join Date: Jun 2003 Location: Las Vegas Age: 42 Posts: 7,492 Trader Rating: (41) Feedback Score: 41 reviews	its a 90s 6 speed... so probably just push all the way to left and up, or all the way to the right and up or down. no need to push down or pull up on the gear shift. __________________ Check out my IG for what I'm up to! DORKIDORI INSTAGRAM!!!

07-24-2015, 04:50 AM	#1
soundboy Zilvia Junkie Join Date: Aug 2013 Location: trinidad Age: 43 Posts: 320 Trader Rating: (0) Feedback Score: 0 reviews	The aluminum shafts make the most sense imo

07-24-2015, 12:47 PM	#3
slow_sr20 Zilvia Addict Join Date: Aug 2005 Location: dayton, oh Posts: 723 Trader Rating: (13) Feedback Score: 13 reviews	I had an aluminum in my last car. The noise it made was ungodly. I'm looking for oem like qualities. I was hoping for an inexpensive option for now. So does that mean the U.S. Spec auto shaft will work, or no?

07-27-2015, 09:14 PM	#4
shaggy0778 Zilvia Junkie Join Date: Jul 2011 Location: Here Posts: 298 Trader Rating: (15) Feedback Score: 15 reviews	Not my car, but a friend of mine in Jacksonville is making over 400whp on an s15 6 speed. He broke the original trans after 3-4 months of dailying/abuse including launching with 275 radials. He's now on his second Mustang dyno:

11-08-2015, 12:10 AM	#8
mik5082 Join Date: Feb 2014 Location: Australia Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	circlip modification by neat gearboxes https://neatgearboxes.wordpress.com/...x-circlip-mod/

11-15-2015, 09:15 PM	#9
ShakotanGazelle Zilvia Junkie Join Date: Apr 2011 Location: DFW, TX Posts: 514 Trader Rating: (2) Feedback Score: 2 reviews	so what do s13 6 speed guys use for driveshafts? the s15 one i have is too long and the carrier bearing is like 6" too far back.

02-20-2016, 10:36 PM	#10
slow_sr20 Zilvia Addict Join Date: Aug 2005 Location: dayton, oh Posts: 723 Trader Rating: (13) Feedback Score: 13 reviews	If anyone is planning to ditch the dual mass flywheel, keep in mind that you will most likely need standard s13/s14 flywheel bolts. The s15 bolts are way too long. ARP seemed to be the cheapest. That's what I used with a Nismo/Autech flywheel.

02-29-2016, 07:07 PM	#11
slow_sr20 Zilvia Addict Join Date: Aug 2005 Location: dayton, oh Posts: 723 Trader Rating: (13) Feedback Score: 13 reviews	Is there anyone out there with confirmed drive shaft fitment info? my car is s14/abs car. I purchased what i was told is a 6-speed s15 drive shaft. Fits into output of transmission just fine but is too long. The rear section from diff to carrier is off by 1/2" approx. The front section is entirely too long by probably 2-3". Anyone else compile any data? I figure i can locate a stock rear section and have the front section shortened, but was hoping for a bolt in solution.

05-25-2016, 08:42 PM	#12
Goldhawg Join Date: Jan 2010 Location: Albquerque Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	I have an Autech S15/6 speed that I'm swapping in a Datsun roadster. It has 60K miles on it. I'm thinking that I should at least replace the clutch disc before I install in the car. thoughts? What clutch disc should I get to replace the one I have?

08-15-2016, 09:54 PM	#13
rcefoonia Join Date: Aug 2016 Location: uk Age: 36 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	Amazing write up we don't even have this much info in AUS about the gearbox.

08-15-2016, 10:01 PM	#14
rcefoonia Join Date: Aug 2016 Location: uk Age: 36 Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	dam great job on the post

09-29-2016, 11:01 AM	#15
chulme1234 Join Date: Sep 2016 Location: GB Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	Quick question if somebody dosent mind answering.... Bought a S15 6MT to put on my SR20DE drift car It came with the shifter, but no knob so I bought an eBay special, I've tested all the gears and its fine... But how do I engage reverse?! I've tried pushing down and pulling up but no luck? Do I need a special gearknob to pull up? Bit confused haha Sorry if this sounds stupid! Also sorry again for bumping an old thread Sent from my E5823 using Tapatalk

09-29-2016, 11:21 AM	#17
chulme1234 Join Date: Sep 2016 Location: GB Posts: 6 Trader Rating: (0) Feedback Score: 0 reviews	Looking at pics on one of the first few pages and it's all the way across right and down, next to 6th, sure I tried that though Sent from my E5823 using Tapatalk

09-29-2016, 11:22 AM	#21
dwnshft2drft Zilvia Addict Join Date: Dec 2006 Location: 3 stars n a sun Posts: 675 Trader Rating: (28) Feedback Score: 28 reviews	Do you have it installed already?

09-29-2016, 11:26 AM	#23
dwnshft2drft Zilvia Addict Join Date: Dec 2006 Location: 3 stars n a sun Posts: 675 Trader Rating: (28) Feedback Score: 28 reviews	Theres a reset trick. Have some one push the car reverse while you engage clutch then force it to reverse. I had the engine running and be safe though.