s14/s15 tranny reliablilty?

[Dosusx]

I have a 95 240sx that probably this summer will get a sr20 transplant s14 with 6 speed or 5 speed tranny, how long do they last at 400rwhp? are they built like subarus that always break when theres too much power or are they strong even at 400hp? I dont want to be changing it every 3 months.. :wiggle:

[drifter101]

stick with the six speed. more gears = better. i heard they can withstand up to 500+hp.

seriously search.

[mr_240sx]

it all depends how you drive it.

im sure you can destroy an s14 tranny with 200hp. also im sure you could daily drive a 600hp car with stock s14 tranny if you take it easy.


hp is just like boost..... you dont always use it all when driving the car.

[Wahl 136]

You should have no problems at 400 whp as mr_240sx said. If you spend the money to get some descent numbers and don't beat it to submission and you'll no worries.

[Wei240]

when you do break them, get the z tranny, look up mazworks, serious stuff... they run a 9 second car or something ridiculous and putting out hefty power

or you can ball out and get them to begin with and never worry, ever...

[Dosusx]

i heard on the z forums that they have grinding problems with lots of z trannys at like 30k miles, and subaru forums people getting their sti trannys swapped at around the same, glass trannys?

[Dosusx]

hmmmmmmmmmmmmmm oops

[slider2828]

Most people actually stick with the 5 speed in Japan. I was looking into doing a S15 6 speed and friends in Japan said that the 5 speed is more reliable and cheaper to get. Most people in Japan stick with the 5 speed.

[steve shadows]

Most people actually stick with the 5 speed in Japan. I was looking into doing a S15 6 speed and friends in Japan said that the 5 speed is more reliable and cheaper to get. Most people in Japan stick with the 5 speed.

The 6 speed is not stronger it is actually slightly weaker.

[axiomatik]

All i got is one pic of the proto, but my max is 50kb that i can up for some reason, not 500kb

don't try to upload it to zilvia. host it on a 3rd party site such as photobucket (http://photobucket.com/) or imageshack (http://imageshack.us/) and then copy the link into your message using [img] tags.

edit: maybe your post was meant for the S15 thread

[Dosusx]

yeah it was, thanks though heh


don't try to upload it to zilvia. host it on a 3rd party site such as photobucket (http://photobucket.com/) or imageshack (http://imageshack.us/) and then copy the link into your message using [img] tags.

edit: maybe your post was meant for the S15 thread

[Dosusx]

Well I want something strong enough to go to the track once a week and I race my friends some times on the weekend on a closed road close to me and im aiming for 400rwhp on a s14 sr20det, I just dont want problems like my friends 04 wrx tranny heh

[mr_240sx]

you should be ok with an s14 tranny. if it blows then you can find another s14 tranny or go z route.... simple

[Dosusx]

the tranny that comes with the silvia s14 blacktop alot better then whats in my 95 s14?

[mr_240sx]

use the s14 sr tranny

[azndoc]

^^^ agreed use the S14 tranny. Plus S15 trannys are hella expensive. If you break one have fun buying another one.

[axiomatik]

the tranny that comes with the silvia s14 blacktop alot better then whats in my 95 s14?

If I remember correctly, the trannies are the same, just different bell housings.

[!Zar!]

s15 tranny is weak.

S13 or s14 is fine.

But why are you even asking? Everyone I know who has 400hp isn't dumb enough to have a need to ask on a forum...

Small steps. First find a motor and install it.

Then worry about power. Because you're getting way ahead of yourself.

Not ALL subaru tranny's are weak. It was only a few.Not to mention awd + sticky tires and added hp. But then again, I redid my tranny before so it hasn't happened to me, but who cares.

Lesson to be had. Don't mod your car like an idiot.

[Dosusx]

Well I just wanted some info before I throw money at my car and have to change tranny every 30k, Lots of people with new sti's are changing theirs even stock, seems to be some problems. Anyway Ill keep my tranny and just start with a motor then, thanks.

[drift-it]

why do you need 400 hp

[azndoc]

Why are you basing your ideas of how many miles a sr tranny would last you with a sti tranny. Doesn't make sense to me.

Every tranny has a different history of how it was driven and cared for. So basing your thinking of that a SR tranny won't last just because a STI's tranny doesn't last is retarded. It's a matter of luck. Sometimes you get lucky and don't have to change your tranny for a while driving a certain way and sometimes you get crap tranny that has to be changed out right away. That's how life goes.

GL

[Dosusx]

I read alot of subaru forums because I have one, and I was just saying how under alot of hp most dont last to long, Like people saying get "bla bla tranny if your going over 350whp, and I wanted to know how strong a sr one was kinda around the same hp, because I dont hear alot about trannys in nissan forums, well except for 350z I hear those have lots of problems too, people changing even at 20k and such.

[DJ_Sunrise]

buy a rebuilt KA tranny on ebay, swap SR bellhousing onto it. or, get the z32 maxworx conversion. or, buy a ppg gearbox gear set, or os giken gear set. ka/sr tranny's are decently cheap. even if u do replace one every 36k/3 years.. $300 over the period of time? who cares. just do it. worry about all this shit later.

-Bart

[koukimonster139]

stick with the six speed. more gears = better. i heard they can withstand up to 500+hp.




what? how did you come up with that lol


yay now ive heard they can withstand 500hp too :ugh:

[sultan]

i heard with that drifting with twin plate clutch you will never blow trannys





EVER







hahahhah

[!Zar!]

I read alot of subaru forums because I have one, and I was just saying how under alot of hp most dont last to long, Like people saying get "bla bla tranny if your going over 350whp, and I wanted to know how strong a sr one was kinda around the same hp, because I dont hear alot about trannys in nissan forums, well except for 350z I hear those have lots of problems too, people changing even at 20k and such.
I have one also. Yes, the trannies are a little weak, but most of the people who drive them are ricers who abuse the fuck out of them. Then there are the people who modify the car. People who spend countless dollars into building more power yet leave the tranny alone. Like I said before, if you are going to be making so much power with awd you might as well upgrade the tranny. I went as far as changing the gear ratios in there, but that's up to you...

stick with the six speed. more gears = better. i heard they can withstand up to 500+hp.

seriously search.

lolyoufailatlifelol
i heard with that drifting with twin plate clutch you will never blow trannys





EVER







hahahhah
I heard if you don't run a clutch at all you won't have to worry about blowing it or burning it out.

[CKAMC]

Sr 6 speed gears are physically smaller.

keep the s14 ka tranny you have and use the s14 sr tranny for the swap. from here you can clean the gears and replace them with new or improved gears while still out there with the sr tranny.

when the sr tranny takes a dump *it can happen to the best of us* simply do the bellhousing swap and walla you got yourself a fairly good transmission ready to go.

or do the z32 trans.

you would be suprised how a much more frequent gear oil change helps. also if you get bored you can have the trans sent off to get cryogen'd or install a mission/diff cooler.

iirc they also make a bellhousing that allows people to use the fs5r30a transmission(the z32 but this a completely pre-casted bell housing not an adapter).

there is quite a bit of choices as you see.

[Dosusx]

*takes notes*