I have searched but really havnt found a good writeup on how to rebuild my s4 5 speed tranny. I have went through two of them in the last 2 months, (I'm guessing cause they were used already) and want to start with a nice fresh setup. Does anybody have a link to any information that might be helpful to me?



Thanks

Tweak

i'm actually doing 2.5 in the next few weeks, i do have pics from the last one too.



its not that easy, and it does require some special tools or a big hammer.

dont forget the really really long socket for the tail shaft nut.. i got a few na trannies and a few t2/fd trannies i can go threw maybe when i have some time ill do a write up. they are kinda tricky to rebuild but take your time and set the mesurments right and there shouldnt be a problem

So, what rebuild kit do I want? Im really want to rebuild my own this time no matter how long it takes.



I was looking at this, but I really dont know what I need. Does it look like these include everything I need? Would I be able to make the long socket and tools I need?



This one is 170$

http://rx7world.com.phtemp.com/catalog/86-...its_2819123.htm



Is there a better place to get these? Maybe strait from mazda?

I will have 2 dead na trannys now ... I need this one to be strong.



I have an 88 GTU.

what you need depends on whats bad/worn. also with that kit i'd be throwing a couple of bearings away and buying from mazda. mazda is $30-50 a bearing so its cheaper to buy that kit. the front input shaft, and center counter shaft bearings in that kit arent as good as the factory ones though. and you need the 2 nuts.



i dont see why you couldnt make a socket, its like 32ish mm and about 3 feet deep, or you can chisel the old nut off.

Geeze .... this is slowly starting to get more and more expensive. If I was to run into any problems, it might be cheaper to just have it sent out and rebuilt. When I open the tranny should I easily be able to tell what is wrong? Would it be a bad idea just to fix whats broken instead of doing a full rebuild? I guess I will just have to open her up and see. I think I will open up both of mine to compare. First I gata make the long socket.. (args) 32mm you say? How sure are you on this?

he he he, they told me not to do it when I asked... now I know why.

Is the hammer needed in replace for a gear puller?

hmmm nevermind I found a local driveshaft builder that has reasonable prices. I also found a t2 tranny for 200ish$. Other then the driveshaft ... do I need anything else to mount the s4 t2 tranny to a s4 NA? THANKS!

The T2 driveshaft is larger than your NA unit, thus the flange in the back going to the differential is not compatible.



You can either do the full swap w/ the T2 rear and halfshafts (recommended if you drive hard/race the car at higher RPM) or you can (very dangerously) drill the NA flange to fit the T2 driveshaft... that will only leave you with .30" of metal along the outside of the bolts and a very WEAK point in your driveline..



IMHO... if your are blowing NA trannies, first find out why (are you pushing big HP on it or sustain high RPM launches, etc??) and then decide if you need the T2 swap... if you do.... swap in the tranny, driveshaft, rear end w/ a S4 LSD (mechanical vs later model viscous) and the T2 halfshafts... these are good for around 400hp and your NA should NOT be able to destroy them...

crap ..... how weak ? I dont wana buy/install a whole new rear end. y is everything so hard? args.... there is no other options such as changing the yoke or something?

nope you must change the whole rear end and axles if you want to run a t2 drive shaft and tranny, or the other option is to put the t2 tranny in the car with proper starter mind you and flywheel and have a drive shaft made with the slip yoke of a t2 and the shaft of a na.



in my opinion if your thinking this job is hard i wouldnt even waist your money on rebuilding the trannies yourself, just find a shop that is known for good work and have them do it man. it may be more expencive at the start but will save you alot of greef and money in the long run man.

and as for the socet you need, dude i highly recomend not making one unless you have someone who can weld really well and machine heat treated metal and then reheat treat after its made or the socket will do more harm then good. i own 2 mazda factory special tool sockets for the trannies and wouldnt sell them ever. i own alot of the special tools for mazda rotary motors and all of the spacial tools for the trannies even the miata/rx8 6speed. they are expencive but well worth it.

So just making it clear, I can not just put a t2 tranny with a custom drive shaft in?

hes saying yes u can do it

You CAN put the T2 tranny in and have a custom shaft made...



My opinion is still figure out why you keep blowing your trannies... i mean, if your tranny is built and survives... everything flows down hill if you know what i'm saying... first your tranny... then your rear end or axles, etc...



if your driving style is aggressive, consider upgrades...

yes you can bolt up a t2 tranny to a na motor but you need a t2 flywheel, either factory or aftermarket t2 lightweight with proper counter weight for your na engine. you need a t2 starter as they mount upside down compaired to the na tranny, the trans mounts unless a convertable are the same , but you need the slip yoke from a t2 drive shaft welded to a na drive shaft or take a t2 drive shaft and weld the universal from a na drive shaft on so it will bolt to the na diff.



a na diff and axels will hold up to 200hp easy and i know from personal use with all the bolt ons anda 100 shot of spray the only thing i blew was my tranny. the axels held a 4500rpm clutch drop but i wouldnt go any higher rpm then that on stock na axels and diff.





i blew 1-3 gears out of my s5 na tranny and the race car had second gear syncro blow out in 3 pieces and the syncro hubs where worn beond any reuse. so if you want to rebuild this na tranny buy not only the syncros but buy the syncro hubs, guides , prolly wont need bearings and inspect the **** out of the gears, one little chip will cause a huge failure down the road in a short amount of time man.



where do you live by the way. if you live anywhere near wisconsin i may be able to help you out.



randy

Yes I drive VERY agressive. A normal 15 min drive around town will include at least 2 drifts, a mulitiple stop light races / hard launches / burn out. Thats why I Want to go t2 get something stronger. ...



But ... just to make it clear ... a custom driveshaft wont be weak right? it wont have the 1/3 inch issue right? That sounds like I will break that pretty easily. The 1/3 inch thing is only if I use the t2 driveshaft and have to drill it right?

T2 tranny custom drive shaft... dont need any new mounts or anything.

ill restate it again,,,,,,,,,,,,,,



t2 tannyswap parts



t2 tranny

t2 flywheel with proper counterweight for your engine

t2 starter

t2 slip yoke

na drive shaft



have a good drive shaft shop like A-1 drive shaft or some one reputable take and cut the na drive shaft slip yoke off, weld on the t2 slip yoke,balance the new custom drive shaft and install in the car no further mods needed.

just be sure the length of the drive shaft is corrrect and not short or too long,,,,,,, the drive shaft shop will be able to assist you in the correct mesurment as some shops differ in how they want to measure the length



now is that a clear enuff discription here man

Right, drilling is a last ditch effort needed....



You will need the flywheel swapped like fc3sboy mentioned along w/ the appropriate counterweight... the T2 tranny... the T2 starter.. the custom driveshaft and your set...



I would still recommend swapping the rear.. if you drive that hard.. getting the more stout rear end and axles will only be a good thing... the rear is usually $100-$200 and axles can vary from $75 to $150...

geezes nevermind I cant afford to get all new flywheel and crap .... just going to have to pop in a stock NA pos again.



Putting in a t2 tranny into a na car looks like its going to cost over $500. How would I even figure out what counterweight I need?

ok how bout this, stop driving your car so hard on the streets untill you can afford to upgrade your car man. i mean damn dude you pound that poor car harder then my race team beats the ITS race car , **** even the 13 hour enduro race was a cake walk in comparison to you 15 block drive. damn man.

You can get away w/ the T2 stocker flywheel...i actually had one laying around a while ago..



You could probably do the swap for about $500...maybe less if you get good deals..

If you going to put a mile on the car, make it a good mile.

I noticed you didnt say t2 clutch .. u dont have to change to a t2 clutch when you change the flywheel?

there is a huge differance between driving on the street, spirited street driving, street racing, real racing and then there is what you do,,,,,,,, stupidity if you ask me. im all about having a good time with my cars but damn dude ( Yes I drive VERY agressive. A normal 15 min drive around town will include at least 2 drifts, a mulitiple stop light races / hard launches / burn out) and to top it off you are breaking parts that you seam to not beable to afford. there for in my eyes stupidity

yes you need the clutch too

calling me stupid doesnt help me much. Thanks .. I guess... ? haha



Ok ... so I will add new clutch to that list.... is there anything else we missed?

im not callin ya stupid man, trust me im not. but i guess i should have said careless or assholeish driving style instead of stupid. just think about it. i aint raggin on ya just tryin to open your eyes a bit on the dangerious ways you drive, you could do alot more damage then just a few broken drive line parts ya know.



and ok swap parts



t2 tranny



t2 flywheel



t2 clutch



t2 starter



t2 throw out bearing



t2 pilot bearing and seal as i cannot remember if the imput shaft snub is larger on the t2 so get it anyways



t2 slip yoke



na drive shaft



na or t2 mounts unless its a vertable then ya its all custom mounts needed



a reputable drive shaft shop and proper measurnments



and i think thats it.



is this enuff , and please dude settle down abit when driving

Your image in your head of me driving is a lot worse then it really is haha. I have 0 tickets ( im 22) I have only been pulled over cause the cop was concirned about the flames coming out my exhaust. Trust me im safe, just when I Get a change to launch or give it a little to much gas around a corner (when no 1 is around (another reason I have no tickets)) I do so. :P Trust me I have never got close to hitting anything or anyone.



That being said ..... it looks like .. I need to find a t2 donor car that has been crashed or something and take everything off it from clutch back. Cant go wrong there right?

you do realize you can buy whole rear sub frames , brakes , suspention, diffe axels ect,,, for around 350 from some importers who bring frount clips in from japan and t2 trannies go for anywhere from 150 to 400 depending on who has them,,,,,,,, i got 3 spares i may sell one or 2 and counterweights are like 30 bucks, and a good act flywheel is like 250 to 300. clutches are from 200 on up. but if ya find a doner car more power to ya but if your keepin your car na seriously all you need is a t2 swap as discused before and really ya prolly dont even need that.



ower race car layed down 187whp. the driver downshitfs alot of the time with out the clutch, the only reason we broke the trans this year was the shifter itself wore out and was alowing the tranny to over shift and it exploded the syncros wich caused some other issues. if you just rebuild the na properly and use the clutch you wont have a problem. the na tranny will hold 175 to 200 of toqure and 250hp , same with the na dif and axels and the t2 tranny well i know mine has held 500 plus hp no failure and 400 foot punds of toqure no failure and same with the rest of the t2 drive line.





to rebuild a na tranny , wich i did the race cars exploded trans this year with all new syncros, syncro hubs and guides and the mazda factory grey sealent and a new nut for the tail shaft and some misc parts we had about 375 worth of parts invested. and the spare tanny i when threw we only had about 150 worth of all new mazda parts. they really are not that hard to rebuild , the t2/fd gear boxes are harder to rebuild then the na tranny or even the 6speed miata/rx8 tranny. now i said t2/fd gear box cause they have a box style set up where the na and the 6 speed have a center bearing suport and the bell housing and tail stock bolt to it unlike the t2/fd . ok so that was some info you really didnt need to know at the moment cause that prolly just confused you even more lol. sorry i just worked on them all lol i knotice these things ya know.



randy