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Old 09-12-2011, 10:18 PM   #31
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So im assuming people who run the 6MT never do upgrades there SR? I want to know how much power they can handle?
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Old 12-04-2011, 06:57 PM   #32
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This is an excellent write up. I have a couple 6 speeds and I joined the forum to add one thing. In my S14 (not sure about S13 chassis) I can install the transmission separately from the engine. I need to disconnect all the intercooler plumbing and hoses and move the wire running along the top of the firewall. Doing those things allows the engine to tilt back enough to remove the tranny. It is a squeeze though.
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Old 12-30-2011, 03:36 PM   #33
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found this while searching for the 6spd crossmember ala-carte:

http://www.nismo.co.jp/en/products/c...ilvia_spec.pdf

it contains all the part numbers for essentially anything 6spd related on the 180sx/silvia.

ALSO, be advised the throwout bearing is NOT the same between 5spd and 6spd. i don't recall off the top of my head but one is of smaller diameter compared to the other.
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Old 01-09-2012, 04:50 AM   #34
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what an excellent and thorough write up, thanx man. Zilvia needs more of these!
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Old 01-25-2012, 06:50 PM   #35
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Great info here guys. Im just curious why do you have to use the s15 flywheel when fitting the 6 speed to a non s15 sr20det?

I can understand the flywheel is thicker. Is the input shat on the 6 speed not long enough to work with the s14 flywheel?
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Old 01-26-2012, 04:46 PM   #36
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has anybody put speedo drives in these? I have the nismo cross reinforced box which had provisions on the main shaft for a speedo drive, ie had the two grooves and hole for a steel ball with the rear housing having a removable bung over the vss hole.

i did a little tinkering myself..

i put a drive gear on the main shaft using an rb25 auto speedo drive gear. it is 2mm smaller in internal diameter. but very carefully i was able to bore it out enough just before the gear became too thin. it was also to wide to fit in the space provided. so i ground it down on a bench grinder and tidied it all up.

i will be using a c34 vss and i am hoping that it will do the trick. if not i will have to find myself a s14 vss.

have heard of people running s15 abs computer etc etc but too much of a hassle for me and i already took my abs out anyhow
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Old 02-14-2012, 01:27 AM   #37
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Greetings to ALL!!

Greetings to ALL!!

I'm fresh on the forum, would just like to say "Hi" to everyone
My goal is to gain knowledge and to share my knowledge and experience.
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Old 03-03-2012, 10:28 AM   #38
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big power

i have the s15 engine and trans and i am planning to make in the neighborhood of 550 to 600 hp max is there anything i can do to strengthen the tranny without spending $10500
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Old 03-27-2012, 09:09 PM   #39
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The 6 speed gearbox uses same yoke as an RB auto box if anybody didnt realise this
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Old 03-27-2012, 09:57 PM   #40
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Great thread. I had one in my non turbo S15 SR car and I never had to replace it. I beat the hell out of my S13 drifting as slow as I could, and the tranny never gave me shit. Considering about doing the 6spd MT in my S13 SR setup , but I have an FC..so it's complicated like a Facebook relationship status.
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Old 03-28-2012, 04:21 PM   #41
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Quote:
Originally Posted by quadzilla View Post
Great info here guys. Im just curious why do you have to use the s15 flywheel when fitting the 6 speed to a non s15 sr20det?

I can understand the flywheel is thicker. Is the input shat on the 6 speed not long enough to work with the s14 flywheel?


Shot in the dark, but I want to say it is bc both the flywheel and bell housings overall diameter are larger and the matching flywheel is needed for trans, flywheel and starter to align.
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Old 03-28-2012, 11:16 PM   #42
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6 speed uses dual mass flywheel, needs it as stated above different diameter bellhousings etc
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Old 04-05-2012, 12:18 PM   #43
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hello from chicago, i have a kinda silly question so please dont kill me,lol can the drive shaft from the 5mt s14 fit the 6mt from a s15? i have a s14 blktop with a 5mt and blew 5th gear and when i put it in reverse the trans wont go back to nuetral when i want to get out from reverse unless i drive it in rev, for about 10ft or so then it pops out on its own? so i just got a 6mt and now the driveshaft doesnt fit?so what should i do? im kinda lost here,anyone in chicago have a yoke i can buy for 6mt? lol hit me back.thanks and this wright up is SSOOO informative! thank you so much. garageafterlyfe@gmail.com
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Old 04-06-2012, 01:24 AM   #44
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Quote:
Originally Posted by garageafterlyfe View Post
hello from chicago, i have a kinda silly question so please dont kill me,lol can the drive shaft from the 5mt s14 fit the 6mt from a s15? i have a s14 blktop with a 5mt and blew 5th gear and when i put it in reverse the trans wont go back to nuetral when i want to get out from reverse unless i drive it in rev, for about 10ft or so then it pops out on its own? so i just got a 6mt and now the driveshaft doesnt fit?so what should i do? im kinda lost here,anyone in chicago have a yoke i can buy for 6mt? lol hit me back.thanks and this wright up is SSOOO informative! thank you so much. garageafterlyfe@gmail.com
You can use an auto drive shaft. I dont know if it is the same as a SR auto. But in my 6 speed i actually used a factory auto drive shaft from an RB R32 skyline.

Basically the 6 speed yoke is just an auto yoke. everybody says u need a custom one blah blah blah. But no u dont. auto has same yoke.
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Old 04-06-2012, 11:56 AM   #45
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hello again, hey 3v1ls14 thanks for the reply. but i still have a problem, i cant find any skyline parts locally and would have to order from somewhere online,so what other options do i have for a driveshaft yoke for the 6mt? can any other yoke fit from other us spec nissans? i've been hitting the junkyards for about 3 days now and no luck. i thought a ka yoke would fit but none available what would be best for my trans/yoke combo? or do i need to have a custom yoke and d-shaft made? im stuck!! lol any one else care to share as well please, thanks very much. oh btw, pics to come soon, i have a 1977 corolla wagon(te38) with s14 sr20det and ae86 gts diff. so hopefully can take her out soon, thanks again forum.
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Old 04-07-2012, 09:44 PM   #46
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Quote:
Originally Posted by garageafterlyfe View Post
what would be best for my trans/yoke combo? Or do i need to have a custom yoke and d-shaft made? .
Quote:
Originally Posted by 3v1ls14
everybody says u need a custom one blah blah blah. But no u dont. Auto has same yoke
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Originally Posted by 3v1ls14
you can use an auto drive shaft
any nissan rwd silvia skyline etc auto drive shaft yoke fits the 6 speed!
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Old 04-08-2012, 07:44 AM   #47
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will a 5 speed from a KA fit on a s15 motor?????!?!?!?!?!
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Old 04-27-2012, 02:21 PM   #48
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This maybe a silly question, but do you think that there is a possibility of removing the bell housing to machine off the extra thickness and run an s14 flywheel? Or since that might misalign the starter, take the bell housing and section an inch out of it at the base which would pull the tranny closer without messing with the starter aliment. I think I'm going to try this and get back to this thread to report my findings because a 17lbs flywheel is just unacceptable when with the s14 setup you can have a 9.5lbs flywheel.

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Old 05-16-2012, 10:49 AM   #49
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Great info thank you
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Old 05-17-2012, 06:46 PM   #50
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Quote:
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This maybe a silly question, but do you think that there is a possibility of removing the bell housing to machine off the extra thickness and run an s14 flywheel? Or since that might misalign the starter, take the bell housing and section an inch out of it at the base which would pull the tranny closer without messing with the starter aliment. I think I'm going to try this and get back to this thread to report my findings because a 17lbs flywheel is just unacceptable when with the s14 setup you can have a 9.5lbs flywheel.
I would not recommend this. The transmission casing is made of cast aluminum, and you may weaken the integrity of the casting, which may lead to cracking.
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Old 06-06-2012, 04:12 PM   #51
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Quote:
Originally Posted by racinjayson View Post
This maybe a silly question, but do you think that there is a possibility of removing the bell housing to machine off the extra thickness and run an s14 flywheel? Or since that might misalign the starter, take the bell housing and section an inch out of it at the base which would pull the tranny closer without messing with the starter aliment. I think I'm going to try this and get back to this thread to report my findings because a 17lbs flywheel is just unacceptable when with the s14 setup you can have a 9.5lbs flywheel.
An easier solution would be to use something like the Exedy hyper single. The included flywheel is not dual mass and extremely light comparatively. Also I can second the other S14 owner. Removal of the tranny alone is doable in an S14 chassis, it's a pain though.
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Old 06-07-2012, 02:37 AM   #52
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its taking a box out of a car while still in place. it is what it is. not usually very fun to do and you will more than likely have a little less space than you'd like, but you can do it if you feel like getting it done.
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Old 06-07-2012, 02:06 PM   #53
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No, the distance needed to clear a dual mass flywheel is much larger, you can find aftermarket 6MT flywheels that are the proper distance.


The distance you would have to cut the housing down would surpass the alignment holes, not to mention its extremely unsafe idea in general.
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Old 01-10-2013, 09:49 AM   #54
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thank you for this thread !
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Old 01-19-2013, 02:46 PM   #55
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so i figured this would be the best place to ask

i got a 6 speed swap and is came with this was told its a nismo flywheel its very light

thinking its the Autech Flywheel

anybody can confirm this and maybe have more info on it as of it value
i searched for a little and could not find much on it

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Old 02-03-2013, 12:21 PM   #56
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where could i possibly get a rebuild kit for a 6 speed?
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Old 02-03-2013, 02:21 PM   #57
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Did you blow up gears or are you looking for synchros? If you blew up gears, the cheapest option is to find a replacement trans or go 5-speed. I'm unsure where you would get a rebuild kit for synchros, I've always assumed they are only sold in Japan and would probably cost too much anyways.
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Old 02-03-2013, 02:28 PM   #58
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Did you blow up gears or are you looking for synchros? If you blew up gears, the cheapest option is to find a replacement trans or go 5-speed. I'm unsure where you would get a rebuild kit for synchros, I've always assumed they are only sold in Japan and would probably cost too much anyways.
Your post did not answer my question in any way.. Not looking for gears, looking for a rebuild kit(seals, syncros etc)
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Old 02-03-2013, 03:12 PM   #59
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Your post did not answer my question in any way.. Not looking for gears, looking for a rebuild kit(seals, syncros etc)
Sorry man, wasn't trying to help you or anything. I've looked for the same thing a while ago, and with little information on the 6-speed I couldn't find where to go. Previous post was kinda hinting that you're on a lost cause. If rebuild kits are only sold in Japan, (which I think they are) then you have to find a seller, convert yen, pay shipping, rebuild at a shop. In all, it'll cost less than a 5-speed swap. Makes no sense to do all of this work on a "weak" transmission, but that's a whole other case.

GL on finding info, post it here if you do.
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Old 02-03-2013, 03:25 PM   #60
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Sorry man, wasn't trying to help you or anything. I've looked for the same thing a while ago, and with little information on the 6-speed I couldn't find where to go. Previous post was kinda hinting that you're on a lost cause. If rebuild kits are only sold in Japan, (which I think they are) then you have to find a seller, convert yen, pay shipping, rebuild at a shop. In all, it'll cost less than a 5-speed swap. Makes no sense to do all of this work on a "weak" transmission, but that's a whole other case.

GL on finding info, post it here if you do.
Did you read this thread?
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