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Old 08-10-2013, 08:11 AM   #91
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does the transmission plate (between block/bell housing) remain the same 5 vs 6 speed?

will I require S15 part or will my S13 part work the same....

I've searched, with no luck leading me to believe its unecessary...
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Old 08-10-2013, 01:04 PM   #92
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Quote:
Originally Posted by S13GG View Post
does the transmission plate (between block/bell housing) remain the same 5 vs 6 speed?

will I require S15 part or will my S13 part work the same....

I've searched, with no luck leading me to believe its unecessary...
Plate is the same.
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Old 08-10-2013, 01:19 PM   #93
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My only question is I am doing a s15 swap with the 6 spd trans what are my diff options apart from the s15 diff since I need the abs module for my Dakota.
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Old 08-12-2013, 10:02 PM   #94
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My only question is I am doing a s15 swap with the 6 spd trans what are my diff options apart from the s15 diff since I need the abs module for my Dakota.
There are quite a bit of things in this thread that discuss this very topic, so read through it and if you still have questions I'll do my best.
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Old 08-12-2013, 10:09 PM   #95
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Originally Posted by racinjayson View Post
There are quite a bit of things in this thread that discuss this very topic, so read through it and if you still have questions I'll do my best.
I have now my question is the Dakota sgi-5 do the trick? There is no specific model in the walkthrough.
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Old 08-28-2013, 04:11 AM   #96
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Hey guys, really dont know if this is the right thread to ask this question.
But anyway, anyone knows the difference if you take the s15 spec-r 6-speed diff and put it in a s14 kouki sr20det with 5-speed?
Need a welded diff and a buddy of mine got the original from his s15!

Thanks /Nilsson
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Old 08-28-2013, 06:58 AM   #97
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Man, I wouldn't weld up an s15 diff, but it will work just fine. The only difference is the gearing. Your diff. now is probably a 4.08 or 3.90 where as the original s15 gearing is a 3.69 so your tach. at 65 will be about 300 rpms lower. Like I said ,though, I wouldn't weld it up, because it's already a helical style posi. which by many standards is the best type of posi. you can get. Yes, of course, not for you drifters, but time attack, autocross, and track days there's nothing better.
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Old 08-28-2013, 04:16 PM   #98
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Man, I wouldn't weld up an s15 diff, but it will work just fine. The only difference is the gearing. Your diff. now is probably a 4.08 or 3.90 where as the original s15 gearing is a 3.69 so your tach. at 65 will be about 300 rpms lower. Like I said ,though, I wouldn't weld it up, because it's already a helical style posi. which by many standards is the best type of posi. you can get. Yes, of course, not for you drifters, but time attack, autocross, and track days there's nothing better.
Damn, I hoped it would be the other way.. Need to get me a 6-speed tranny, always thought my gears are sooooo long if u know what i mean, ~85 topspeed at 2nd gear and ~115 in 3rd.
Got a good price at the s15 diff so might as well use it! thanks for the good answer!

/Nilsson
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Old 08-29-2013, 03:41 AM   #99
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only the s15 spec R diff is a torsen unit, the S15 spec S (and tbc the auto) is a standard diff.

Sell the S15 spec R diff with the halfshafts, it is worth a bit of money. Dont get a 6spd from an S15, unless you want to change it often. The late Z33 6 spd is really great even for drifting, as it is quite short and precise. I know a pro drifter using one around here. Full kit (including new gearbox from nissan, adapter plate, machining, propshaft, and maybe labor ) is around 4000€.

Another way to make a gearbox "shorter" is the Clarkson way: "POWERRRRRRRRRRRRRR" :mrgreen:
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Old 08-29-2013, 04:38 PM   #100
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Originally Posted by Croustibat View Post
only the s15 spec R diff is a torsen unit, the S15 spec S (and tbc the auto) is a standard diff.

Sell the S15 spec R diff with the halfshafts, it is worth a bit of money. Dont get a 6spd from an S15, unless you want to change it often. The late Z33 6 spd is really great even for drifting, as it is quite short and precise. I know a pro drifter using one around here. Full kit (including new gearbox from nissan, adapter plate, machining, propshaft, and maybe labor ) is around 4000€.

Another way to make a gearbox "shorter" is the Clarkson way: "POWERRRRRRRRRRRRRR" :mrgreen:
Hehe yeah maybe its a better idea to get one of those then. just thought it would be the easy way out to get a s15 6speed as it fits right on , and i am about to get some more power with new cams and injectors (now currently 280~whp)
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Old 09-15-2013, 10:42 AM   #101
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My swap didn't come with the shifter does anyone know where I can get a s15 shifter.
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Old 11-11-2013, 11:09 AM   #102
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Speedo gear question:

So I had my s14 speedo drive gear (metal) machined for a 28mm vs 25mm shaft

There are 2 clip groves, but the nismo kit only includes 1, so I only ordered 1

The gear is too wide to expose both groves,

My guess is; put the c-clip in forward groove and the rear housing holds it in place?

Anyone with experience care to chime in?
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Old 11-12-2013, 08:11 AM   #103
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i am still working on my speedo issue also
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Old 11-13-2013, 12:26 PM   #104
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Would anyone happen to know:
I have an S14 SR with a Exedy Hyper Single (clutch and fly wheel combo), Would this combo work with the S15 Transmission?
Also, can you swap the bell housing between S15 and S14 to allow the use of a S14 Clutch?

Can anyone post pics on how to install the VSS ring into the S15.
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Old 11-13-2013, 05:51 PM   #105
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hello all
pardon me, i dont mean to add clutter to the thread,
i only ask because maybe others could benefit from it.

how does the 6 speed s15 trans compare to the 6 speed z33
trans?

-which one is more plentiful/tangible?
-does it cost more to source the s15 trans OR the z33 and adapter plate
(and/or whatever else it takes to run it)?
-how are the gearings compared to each other?
-which one is stronger (id assume its the z33, but i dont want to assume...)

again, only trying to help and bring more options and info to the community.
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Old 11-14-2013, 02:53 AM   #106
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I just backed out of a S15, because the Z33 seems like a better route. Z33 gear boxes are reasonably priced on ebay. I feel the s15 swap costs a bit much for what it is.
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Old 11-14-2013, 12:45 PM   #107
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just got the s15 engine and tranny swap done with a Toda 11lb flywheel and ACT 6 puck street clutch. i drive it almost every day and im so glad i got this setup. just have to sort out the speedometer issue
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Old 11-15-2013, 05:26 AM   #108
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Alright, ^I will document and upload the speedo correction in about a week or so when I get around to finishing it up, with part numbers etc...
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Old 01-07-2014, 01:24 AM   #109
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Wow, this is a really good write up. I don't plan to do a swap any time soon but when I do I will be coming back to this. Thanks!
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Old 01-16-2014, 04:45 PM   #110
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Quote:
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My swap didn't come with the shifter does anyone know where I can get a s15 shifter.
Do you still need the shifter lever?
I have an extra for S15.
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Old 02-23-2014, 05:05 AM   #111
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Any problems mating a s15 DET with a s13/14 5 speed box?
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Old 03-05-2014, 11:44 AM   #112
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I have an S14 with a relatively stock S15 motor making 304whp 306wtq and the transmission is still holding strong.
However, I am starting to have some issues with the clutch slipping. I have purchased a new clutch and flywheel, but was wondering; do I have to remove the engine to change the clutch? It says in the OP there's no way to get the transmission in and out with the engine in the car. If this is true that makes clutch changes a real PITA
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Old 03-05-2014, 12:03 PM   #113
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Wrong place to ask said question. Try the actual tech section next time, not the stickier threads.

However, it's not impossible to get the trans out with the motor still in, it just takes some finesse.
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Old 07-23-2015, 06:49 PM   #114
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Does anyone know, can I use an automatic s14 KA driveshaft for the s15 6 speed trans? I found a super old thread from freshalloy where someone said you could. Just looking for clarification before I pay out for a "JDM" s15 6-speed shaft. Thanks.
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Old 07-23-2015, 11:03 PM   #115
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buy the S15 shaft. the american drive shafts were pieces of shit. the JDM drive shafts didnt use the stupid hockey puck damper on the tranny output shaft that goes to hell in a hand basket (turns into a frayed mess). the JDM drive shafts used standard yolks and a rebuilding center bearing bushing.

or just buy a single piece aluminum drive shaft and enjoy the wonderful 100% direct feeling in acceleration!
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Old 07-24-2015, 04:50 AM   #116
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The aluminum shafts make the most sense imo
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Old 07-24-2015, 09:12 AM   #117
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Quote:
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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.
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Old 07-24-2015, 12:47 PM   #118
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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?
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Old 07-27-2015, 09:14 PM   #119
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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:
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Old 08-06-2015, 08:02 PM   #120
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Thumbs up

sooooooooo, anybody have the part number for the speedo drive gear and the associated c clips and bearing to get the speedo to work in an S13?

ive got 2 full s15 setups so i sold all my 5 speed stuff haha and at least one of them has the VSS plug
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