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

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

LoneWolfK16 · 02-06-2017, 07:26 PM

So I'm still having a slight misunderstanding when it comes to the dual mass setup. Someone please shed light upon my situation

If I purchased this clutch

http://www.frsport.com/ACT-NS1-XTR6-...T_p_15134.html
or
http://www.frsport.com/ACT-NS1-HDR6-...ET_p_1422.html

would I then have to purchase a new flywheel or will this be a direct bolt onto the dual mass?

I'm trying to prepare to replace my clutch in my car before it goes. (S15 Spec R with a 6MT). I just want to buy the right things once instead of back and forth'n it. I've been reading on this but I still cant grasp the concept of the correct setup on whether clutches are specifically designed for dual mass vs single mass.

"Clutch Disc and Pressure Plate. Any clutch kit for the 5MT will work, but if one is using the OEM S15 Dual-Mass Flywheel, then feel free to get an unsprung clutch kit, even though this may be costly. Sourcing a new OEM replacement clutch kit is rather difficult to find. You can use a sprung clutch kit on the Dual-Mass flywheel, but the dampening will be overkill and shifting between gears may feel sloppy. "

I've contacted FRSport and they were also unsure whether this would work. (Even though is says its 5 or 6spd compatible in their notes.)

Help would be much appreciated.

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

LoneWolfK16 · 02-08-2017, 08:22 PM

Quote:

Originally Posted by TheRealSy90

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

This doesn't answer my question what so ever.

LoSt180 · 02-09-2017, 08:58 AM

Quote:

Originally Posted by LoneWolfK16

This doesn't answer my question what so ever.

It does, sorta. Either of those clutch kits will work with the dual mass flywheel. The diameter of the disc and the mount points of the pressure plate are all the same. There are no physical differences between the 14 and 15 clutch apart from the 14 ones have springs in the friction plate to absorb harsh loads. S15's don't 'need' this as the dual mass fly does the same job but fitting a S14 clutch to a S15 will not be detrimental at all.

Personally (just an opinion of a guy on the internet), I'd get rid of the dual mass flywheel and find a good lightweight flywheel. It will need to be S15 specific due to the flywheel being physically thicker than the S13/S14 one. If converting to a single mass lightweight flywheel, then you'd probably want to consider a sprung clutch (ie a normal SR clutch kit available).

TheRealSy90 · 02-09-2017, 04:23 PM

Yep, just get an aftermarket flywheel with the specific offset for the s15 transmission, and then you can use any s13/s14 aftermarket clutch.

LoneWolfK16 · 02-09-2017, 05:17 PM

Quote:

Originally Posted by TheRealSy90

Yep, just get an aftermarket flywheel with the specific offset for the s15 transmission, and then you can use any s13/s14 aftermarket clutch.

Ehh, rather keep the dual mass on. Its really nice when daily driving.
Thanks for the input fellas.

Hope the ACT clutch works. Cheers

TheRealSy90 · 03-24-2017, 12:44 AM

You'll want an unsprung disc on a dual mass flywheel.

Sent from my iPhone using Tapatalk

ShakotanGazelle · 03-24-2017, 10:49 AM

I had the nismo coppermix sports clutch kit which is a lightweight single mass steel flywheel, and a full face unsprung clutch disc and it felt amazing, relatively easy pedal feel but still incredibly sporty feeling. Best way to describe it would be like a Porsche gt3 or similar kind of sports car.

dwnshft2drft · 03-24-2017, 01:14 PM

Quote:

Originally Posted by ShakotanGazelle

I had the nismo coppermix sports clutch kit which is a lightweight single mass steel flywheel, and a full face unsprung clutch disc and it felt amazing, relatively easy pedal feel but still incredibly sporty feeling. Best way to describe it would be like a Porsche gt3 or similar kind of sports car.

I have the same kind but after installing the nismo coppermix kit, then created issue engine stalling and shuts off before stopping traffic lights. So kept doing heel toe all the time. Some say its the flywheel too light? Did you adjust TPS or change throttle body? Any help would appreciate it.

LoneWolfK16 · 04-21-2017, 07:10 PM

Quote:

Originally Posted by LoSt180

It does, sorta. Either of those clutch kits will work with the dual mass flywheel. The diameter of the disc and the mount points of the pressure plate are all the same. There are no physical differences between the 14 and 15 clutch apart from the 14 ones have springs in the friction plate to absorb harsh loads. S15's don't 'need' this as the dual mass fly does the same job but fitting a S14 clutch to a S15 will not be detrimental at all.

Personally (just an opinion of a guy on the internet), I'd get rid of the dual mass flywheel and find a good lightweight flywheel. It will need to be S15 specific due to the flywheel being physically thicker than the S13/S14 one. If converting to a single mass lightweight flywheel, then you'd probably want to consider a sprung clutch (ie a normal SR clutch kit available).

Now this answered it perfectly. Thanks mane.

Eoken · 05-07-2017, 02:38 AM

Time to do a little 6 speed work! I am doing a S15 six speed swap on my blacktop S13. I will be making a custom drive shaft and be running a S15 HLSD with a 3.69 ring gear to get the S15 stock gear ratio. Here is what I had found out installing my SR20DET 5 speed VSS drive gear onto the outputshaft of the S15 6 speed. Hope his info helps people!

S13 VSS Drive gear was bored out by hand from 25.0mm inside diameter to 27.9mm using a round file (I have seen some people say 28.0mm but I kept checking it with my caliper and got 27.9mm...). The steel ball that keeps the drive gear rotating interdependently from the shaft sticks out 5.1mm when installed in its hole. I used a small green rotary tool bit to make the half circle in the drive gear deeper to fit the ball. I then used two a 1-1/18 inch external snap rings to secure the drive gear from moving up or down. to do this I had to take off a mil or two off the top and bottom inside portion of the gear and notching out a place for the ends. It fits well and the S13 VSS installs smoothly and seems to spin nicely when I spun the output shaft when it was all back together. I know people have talked about doing this but I might e the first S13 guy to try it lol! If you are interested in any more details/ methods/ tools just let me know and I can help.

LoSt180 · 05-07-2017, 09:02 AM

Wow, beautiful work and great detail. My question is will your speedo be off since you're using the S15 3.69 FD, and the S13 was 4.08. I forget about the interchangability of sensors, but S14 SR had the 3.69 FD also.

Eoken · 05-07-2017, 10:41 AM

Yes, I will need to use a speedo correction kit like a yellow box or similar product. But it should be very straightforward since the signal will not have to be converted.

Eoken · 05-07-2017, 11:15 AM

does anyone know where I can find the torque specs for the rear transmission housing (using 12mm bolts for the 6 speed? it is mentioned in the original post make sure to torque them to spec but the spec is not mentioned.

I have looked in the SR20DET S14 factory service manual and it is not even mentioned for the 5 speed in there >. >

FSM:http://www.240edge.com/manuals/s14_sr20det.pdf

the transmission section starts on page 369

LoSt180 · 05-07-2017, 11:36 AM

Quote:

Originally Posted by Eoken

does anyone know where I can find the torque specs for the rear transmission housing (using 12mm bolts for the 6 speed? it is mentioned in the original post make sure to torque them to spec but the spec is not mentioned.

I have looked in the SR20DET S14 factory service manual and it is not even mentioned for the 5 speed in there >. >

FSM:http://www.240edge.com/manuals/s14_sr20det.pdf

the transmission section starts on page 369

Check the S15 manual, may be in there: http://www.nicoclub.com/FSM/240sx/S15/S15/

Eoken · 05-08-2017, 12:07 AM

top work loSt180, you lead me right to my answer! 22-28ftlb

LoneWolfK16 · 05-13-2017, 05:36 PM

Quote:

Originally Posted by LoSt180

It does, sorta. Either of those clutch kits will work with the dual mass flywheel. The diameter of the disc and the mount points of the pressure plate are all the same. There are no physical differences between the 14 and 15 clutch apart from the 14 ones have springs in the friction plate to absorb harsh loads. S15's don't 'need' this as the dual mass fly does the same job but fitting a S14 clutch to a S15 will not be detrimental at all.

Personally (just an opinion of a guy on the internet), I'd get rid of the dual mass flywheel and find a good lightweight flywheel. It will need to be S15 specific due to the flywheel being physically thicker than the S13/S14 one. If converting to a single mass lightweight flywheel, then you'd probably want to consider a sprung clutch (ie a normal SR clutch kit available).

Turns out the clutch inside the car was a NISMO Super Coppermix and I was not able to install the new ACT due to the flywheel being totally different than stock.

Lesson learned..

TheRealSy90 · 05-14-2017, 04:50 AM

Those are VERY good clutches. Honestly one of the best available. I'd seriously look into refurbishing that clutch lol.

Sent from my iPhone using Tapatalk

LoneWolfK16 · 05-14-2017, 05:36 AM

Quote:

Originally Posted by TheRealSy90

Those are VERY good clutches. Honestly one of the best available. I'd seriously look into refurbishing that clutch lol.

Sent from my iPhone using Tapatalk

Yeah I thought about just replacing the disc, but both the fly wheel and pressure plate have severe heat spots all over. The clutch disc was inspected and gauged and still had plenty of life on it. But yet its starting to slip. Its been in the car for about 4-5 years now. Probably gonna just but a new one from.

TheRealSy90 · 05-14-2017, 05:50 AM

Should be able to get the flywheel resurfaced and maybe a replacement pressure plate ring? Rhd Japan has lots of clutch refurbish stuff but never looked for that one specifically.

Sent from my iPhone using Tapatalk

Busted_daily · 06-19-2017, 09:34 AM

Hey so after reading if I went with the 6puck white bunny package which is competition clutch and aftermarket flywheel it should work fine with s15 6speed trans

TheRealSy90 · 06-20-2017, 11:38 PM

S15 trans needs an s15 specific flywheel.

Sent from my iPhone using Tapatalk

joaquin714 · 06-28-2017, 11:39 PM

Can I use a s15 clutch flywheel combo on a s13 sr? I know physically it will bolt up but curious if the throw out has diff.

TheRealSy90 · 06-30-2017, 03:47 PM

Quote:

Originally Posted by joaquin714

Can I use a s15 clutch flywheel combo on a s13 sr? I know physically it will bolt up but curious if the throw out has diff.

You can if you also use the s15 6sp transmission.

Sent from my iPhone using Tapatalk

s13vette · 07-10-2017, 12:27 PM

Links to buying 6speed flywheels?

LoSt180 · 07-10-2017, 01:42 PM

Quote:

Originally Posted by s13vette

Links to buying 6speed flywheels?

www.google.com

Fastimport · 10-17-2017, 10:39 PM

Does anyone know what these weigh?
Considering bringing one in from Japan to do surgery on the bell housing so it will bolt on to my L-series truck engine.

Would be nice to know ahead of time what shipping will cost.

Fastimport · 10-23-2017, 07:44 AM

Well, I just bought one of them, so I will find the weight once I have the shipping bill, no problem.

Now I need to find one that has blown, as I would like a spare bell hosing to modify to fit an L-series engine.
Someone must have a one that they blew...

Fastimport · 10-24-2017, 07:57 AM

Quote:

Originally Posted by s13vette

Links to buying 6speed flywheels?

I have bought these flywheels out of Japan for 15 years, sold hundreds of them, and never an issue.

https://page.auctions.yahoo.co.jp/jp/auction/q172944733

And at the very top is a link to 'Buyee', which is Yahoo's forwarding service.

The only reason I no longer sell flywheels is because of the stinking chinco crap being sold for shit low prices.
You know, the shiny black ones that everyone who deals in chinco shit to make a fast buck at the end user's expense.

02-06-2017, 07:26 PM	#152
LoneWolfK16 Zilvia Member Join Date: Dec 2012 Location: Japan Posts: 229 Trader Rating: (7) Feedback Score: 7 reviews	So I'm still having a slight misunderstanding when it comes to the dual mass setup. Someone please shed light upon my situation If I purchased this clutch http://www.frsport.com/ACT-NS1-XTR6-...T_p_15134.html or http://www.frsport.com/ACT-NS1-HDR6-...ET_p_1422.html would I then have to purchase a new flywheel or will this be a direct bolt onto the dual mass? I'm trying to prepare to replace my clutch in my car before it goes. (S15 Spec R with a 6MT). I just want to buy the right things once instead of back and forth'n it. I've been reading on this but I still cant grasp the concept of the correct setup on whether clutches are specifically designed for dual mass vs single mass. "Clutch Disc and Pressure Plate. Any clutch kit for the 5MT will work, but if one is using the OEM S15 Dual-Mass Flywheel, then feel free to get an unsprung clutch kit, even though this may be costly. Sourcing a new OEM replacement clutch kit is rather difficult to find. You can use a sprung clutch kit on the Dual-Mass flywheel, but the dampening will be overkill and shifting between gears may feel sloppy. " I've contacted FRSport and they were also unsure whether this would work. (Even though is says its 5 or 6spd compatible in their notes.) Help would be much appreciated.

03-24-2017, 10:49 AM	#159
ShakotanGazelle Zilvia Junkie Join Date: Apr 2011 Location: DFW, TX Posts: 514 Trader Rating: (2) Feedback Score: 2 reviews	I had the nismo coppermix sports clutch kit which is a lightweight single mass steel flywheel, and a full face unsprung clutch disc and it felt amazing, relatively easy pedal feel but still incredibly sporty feeling. Best way to describe it would be like a Porsche gt3 or similar kind of sports car.

05-07-2017, 02:38 AM	#162
Eoken Zilvia Member Join Date: Feb 2015 Location: Austin, TX Posts: 188 Trader Rating: (1) Feedback Score: 1 reviews	Time to do a little 6 speed work! I am doing a S15 six speed swap on my blacktop S13. I will be making a custom drive shaft and be running a S15 HLSD with a 3.69 ring gear to get the S15 stock gear ratio. Here is what I had found out installing my SR20DET 5 speed VSS drive gear onto the outputshaft of the S15 6 speed. Hope his info helps people! S13 VSS Drive gear was bored out by hand from 25.0mm inside diameter to 27.9mm using a round file (I have seen some people say 28.0mm but I kept checking it with my caliper and got 27.9mm...). The steel ball that keeps the drive gear rotating interdependently from the shaft sticks out 5.1mm when installed in its hole. I used a small green rotary tool bit to make the half circle in the drive gear deeper to fit the ball. I then used two a 1-1/18 inch external snap rings to secure the drive gear from moving up or down. to do this I had to take off a mil or two off the top and bottom inside portion of the gear and notching out a place for the ends. It fits well and the S13 VSS installs smoothly and seems to spin nicely when I spun the output shaft when it was all back together. I know people have talked about doing this but I might e the first S13 guy to try it lol! If you are interested in any more details/ methods/ tools just let me know and I can help.

05-07-2017, 09:02 AM	#163
LoSt180 Zilvia FREAK! Join Date: May 2013 Location: MD Posts: 1,049 Trader Rating: (18) Feedback Score: 18 reviews	Wow, beautiful work and great detail. My question is will your speedo be off since you're using the S15 3.69 FD, and the S13 was 4.08. I forget about the interchangability of sensors, but S14 SR had the 3.69 FD also.

05-07-2017, 10:41 AM	#164
Eoken Zilvia Member Join Date: Feb 2015 Location: Austin, TX Posts: 188 Trader Rating: (1) Feedback Score: 1 reviews	Yes, I will need to use a speedo correction kit like a yellow box or similar product. But it should be very straightforward since the signal will not have to be converted.

05-07-2017, 11:15 AM	#165
Eoken Zilvia Member Join Date: Feb 2015 Location: Austin, TX Posts: 188 Trader Rating: (1) Feedback Score: 1 reviews	does anyone know where I can find the torque specs for the rear transmission housing (using 12mm bolts for the 6 speed? it is mentioned in the original post make sure to torque them to spec but the spec is not mentioned. I have looked in the SR20DET S14 factory service manual and it is not even mentioned for the 5 speed in there >. > FSM:http://www.240edge.com/manuals/s14_sr20det.pdf the transmission section starts on page 369

05-08-2017, 12:07 AM	#167
Eoken Zilvia Member Join Date: Feb 2015 Location: Austin, TX Posts: 188 Trader Rating: (1) Feedback Score: 1 reviews	top work loSt180, you lead me right to my answer! 22-28ftlb

06-19-2017, 09:34 AM	#172
Busted_daily Leaky Injector Join Date: Jan 2013 Location: Aiken SC Age: 30 Posts: 118 Trader Rating: (1) Feedback Score: 1 reviews	Hey so after reading if I went with the 6puck white bunny package which is competition clutch and aftermarket flywheel it should work fine with s15 6speed trans

06-28-2017, 11:39 PM	#174
joaquin714 Zilvia Member Join Date: Jul 2007 Location: California Posts: 192 Trader Rating: (1) Feedback Score: 1 reviews	Can I use a s15 clutch flywheel combo on a s13 sr? I know physically it will bolt up but curious if the throw out has diff.

07-10-2017, 12:27 PM	#176
s13vette Leaky Injector Join Date: Jun 2012 Location: Miami Age: 38 Posts: 145 Trader Rating: (1) Feedback Score: 1 reviews	Links to buying 6speed flywheels?

10-17-2017, 10:39 PM	#178
Fastimport Join Date: Jun 2005 Location: San Antonio TX Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	Does anyone know what these weigh? Considering bringing one in from Japan to do surgery on the bell housing so it will bolt on to my L-series truck engine. Would be nice to know ahead of time what shipping will cost.

10-23-2017, 07:44 AM	#179
Fastimport Join Date: Jun 2005 Location: San Antonio TX Posts: 22 Trader Rating: (0) Feedback Score: 0 reviews	Well, I just bought one of them, so I will find the weight once I have the shipping bill, no problem. Now I need to find one that has blown, as I would like a spare bell hosing to modify to fit an L-series engine. Someone must have a one that they blew...