Anyways, im on my third or fourth, (lost count) N/A tranny on my S4 Base. I want to get some hardened synchros and some quicker (maybe miata?) gears in the beast for my final tranny when i do my first rebuild. One question is where to get hardened or harder synchros and so forth? I have one link to some rebuild kits but i dont see anything but OEM or OEM like parts on there, no performance which is at www.drivetrain.com . If anyones got anymore links to sites about performances transmission stuff that'd be awsome. Thanks guys.

Do you have more than 250hp??? I'm going to assume you know how to shift, or shouldn't I? I have never heard of someone busting so many n/a trannies.. I have never heard of hardening the synchro either cuz no one ever needs that.. I'm not trying to sound like a jackass either.

I wouldn't go that far. I am on my second tranny in my AE, put a second in the 84, kraig needs to replace his, Travis needs to replace his. 4 or 5 does seem like a lot, but in the same respect i wouldn't say hte mazda tranny's are any where near bulletproof.



I would try the cryo treatment on the tranny parts, I think it costs a couple hundred and is supposed to harden the **** out of the parts. Pineapple also has a much stronger tranny avail, you can find that at http://pineappleracing.com for a proven stronger bet, pineapple is the way to go.

Thanks guys. No, i might have say 200 to the flywheel if that, (havnt dynoed it), but yeah im pretty rough on trannys, so are all my freinds as well as im sure other people are. Yeah i read something about a cryo treatment but didnt know that pineapple did the treatment. i would rather just buy a set of hardened synchros if i could and just use them (as i think they might be cheaper than buying stock ones and then having them treated).



Another thing, i dont mean 4 or 5 in this same car, i mean 4 or five out of all the Rx7s ive had (three) https://www.nopistons.com/forums/pub...R#>/tongue.png Alright, thanks

oh ok https://www.nopistons.com/forums/pub...#>/biggrin.png I thought you meant 1 car....

My old n/a tranny had 150k on it, shifted perfect everytime, raced daily. But at one point at our university meet, we had 10 n/a(s) there and everyone had the originall tranny, in good condition.

stop launching at redline u should be fine, its slower anyway, learn to slip the clutch https://www.nopistons.com/forums/pub...1047683894.gif

I've had 1-2 & 2-3 synchro probs with my old S4 but not on this one. I noticed an improvement when putting Redline MTL in.. now I'm using Redline 75W90.. I think the MTL was a bit too thin.

i think the miata guts tranny will be a little stronger, at least the synchro life will be a little better.



mike

Could you slap a Turbo2 tranny on a N/A motor, as far as I heard they have more beef over the N/A Trannys.



Greg

Stop Assuming what you dont know. To be honest i have NEVER launched this transmission with a clutch dump. I dont drag race that often either, my problems are with second and third gear synchros. I have some synthetic 90W in there right now, but i forget the brand.. No matter how slow/fast i push the clutch in... if i "bang" the gears it'll scratch, which leads me to think the synchs are gone. If i shift it slow it doesnt scratch, but you cant really shift slow all the time.



Time to ask the knowledgable "Evil Forum" as you guys call it if all im going to get is "stop doing something you arnt doing and i have now idea what im talking about" responses. Thanks for those who have helped.



Rotaryman13B- Yes you can use a TII transmission so long as you either change the bell housings and tail housings (use the tail shaft) i THINK that'll work, or you can do a whole conversion with the TII clutch/flywheel/PP along with a TII driveshaft and rear end and half-shafts. But, im trying to avoid all that fuss and just build a strong "N/A" transmission with stronger synchs. I dont really have a problem with the gears messing up, its the synchromesh from banging the gears.



Kahren- Ill pick up some Redline and see if that helps any, i need to change the fluid in the rear soon anyways so when i do that ill go ahead and change the tranny fluid, flush, and put redline in. You guys know where i can get ahold of some of that around town or would i have to order it offline? I asked "AutoZone" and they didnt know where i could get any, but we all know how intellegent those people can be. Thanks

that shouldn't effect the life of the syncros, when you drop clutch, you are already in gear. powershifting at 7000 rpm into 2nd and 3rd is what kills transmissions.



as for slipping the clutch, they will just kill you clutch, which is no easy matter in changing

Have you had a rebuilt n/a tranny go bad, or were all these used?

you have to swap the whole driveline. the t2 is a different style case, usually they shift even slower (bigger = more mass = slower), the t2 boxes usually dont grind they will just not let you in. the na stlye box (m boxes), usually shift a lot better, but we're dealing with 15 year old synchros, and they are one of the wear parts in the tranny.



mike

Just put a tII tranny in it, take the driveshafts over to master fabricators and have them build you a driveshaft

I was wondering that too, maybe if you get a pineapple rebuild or another decent rebuild, this won't happen. After a rebuild on my 86 with some Redline, it was perfect no matter how hard I shifted it. I still have a warranty on my car now so I need to kill this tranny which shouldnt be a problem https://www.nopistons.com/forums/pub...DIR#>/wink.png

hey not be a dick, but its obvisouly u that doesnt knwo what u are doing

or talking about if u go thru that many tranny, u cant have that bad of luck.

i beat the crap out of my NA but always rev match the gears, do some launches

and yet to have a problem, knock on wood https://www.nopistons.com/forums/pub...IR#>/smile.png.

The 86 GxL i drive around has had ALOT of luck with it's tranny, like i said a while back, the car was handed down to me.. it now has 212,000 the car. (not the engine lol that only lasted to 208,000) Anyway, the only problems i am having with my transmission are noisy bearings, when i downshift into second, i get a real whine/squeel sound.. i mean, it's not Terrible, but i can tell the bearings are shot



as far as the syncro's, i think their all A-ok, it doesnt grind when shifting from gear to gear, i use to get a slight grind while downshifting into 3rd, changed the fluid, and i've never heard it since.



the N/a tranny's are great, they just can't handle alot of power, 220-250 MAX, and i'm not even getting 200 at the flywheel yet so i should still be safe..



eventually i would like to upgrade to a turbo tranny, but that's still months in the making, and i'm not really worried about it..



just my 7 cents



-Markus

They have all been used transmissions usually ones from the J yard. The first one the shift fork bent (???) and locked up. Then i replaced it with a J yard (J-Spec, LoL) tranny and it had slight grinding 3rd gear to start with, which quickly busted up. And now im on this one, which is grinding second and third gear synchs.



Karen- Its not HOW I LAUNCH. Obviously, every problem i have had with a transmission is in the SYNCHROS and not the accual first gear itself. And with all my stuff coming from the J yard with usually 100+K on it i would bet all i have ON BAD LUCK. I seriously doubt i shift so fast the synchs cant keep up and i just grind them down... higly doubt that. I rev match on downshifts... but they usually dont grind then anyways, my problem is WOT and i go to shift (no i dont hold the gas down either while shifting) they grind, and then continually get worse over time (a few months-6 mo) usually. I use synthetic 90W in all my trannys too, so dont go blaming it on "you dont know what you're doing you probably dont have any fluid in there". Damn, i joined this forum to rid myself of people like you (dont take that to heart), but it seems that i get better help with less fuss on the Rx7Club.com . Maybe im not double clutching right? LMAO.



Well, this transmission isnt grinding too bad, just a little in second and thrid, i think ill go get some redline and see if that helps out any.



Thanks.

It cost about 395 for a basic rebuild from Pineapple Racing. I think i can do it cheaper and not have the down time waiting for shipping each way, since this is my only running vehicle of the time. Anyone know where i can get some harder or hardened synchros? (wasnt this the sole purpose of the thread to begin with? LOL) https://www.nopistons.com/forums/pub...IR#>/bigok.gif



Thanks again guys.

Irv Hoerr Racing has REM treatment for gearbox parts, i swear by this treatment. It eliminates all external stress risers, and completely relieves all internal stressors. Cryo-treatment is ******* hogshit https://www.nopistons.com/forums/pub...IR#>/angry.png , is does not work and its a scam, been there broke that.



Hoerr Racing



You can always adapt a nice MVRE STA900 dogbox to the car https://www.nopistons.com/forums/pub...1047683329.gif



Drpo them a line or an e-mail, they are in the middle of reconstructing their website, request a catalog. They have lots of go fast goodies and stuff in it. https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Excellent site. I ordered the Catalog and should have it whenever, haha, thanks man!

I would say to stop swapping in trannys that are so old, I never got why

people think a junk tranny they buy for $50-$75 is going to work good?



Pay the $500 or so to have it rebuilt, and you will get a warranty with it.



And if you dont like it here, go ask your questions over at RX-7.com and stop telling us about it

Are the N/A s4 and s5 trannies interchangeable?

What the **** is up your ass? Damn gena. Im sorry i make little money and cant afford 500 dollars at the drop of a hat so i do what i can. BTW j yards give warentees, hehe. I dont think anyone really hopes a J yard special tranny will hold up, i certainly dont. Thats why when everyone was like "hey man, you must not know what you are doing because you break so much ****" im like "uh.. they were J yard trannys, of course they are going to break". So, all in all your post was https://www.nopistons.com/forums/pub...1047683621.gif . Unless you know where i can buy some hardened gears?



And yes i think S4 and S5 trannys are interchangeable but im not sure, maybe a search would yeild come good results.

What the **** is up your ass? Damn gena. Im sorry i make little money and cant afford 500 dollars at the drop of a hat so i do what i can. BTW j yards give warentees, hehe. I dont think anyone really hopes a J yard special tranny will hold up, i certainly dont. Thats why when everyone was like "hey man, you must not know what you are doing because you break so much ****" im like "uh.. they were J yard trannys, of course they are going to break". So, all in all your post was https://www.nopistons.com/forums/pub...1047683621.gif . Unless you know where i can buy some hardened gears?



And yes i think S4 and S5 trannys are interchangeable but im not sure, maybe a search would yeild come good results. [/quote]

whats up my ass? What kind of answer would you like?

Would you like me to read you a bedtime story and hold your hand

and rock you to sleep when I give a answer?



You say you have no money, but you ask about hardened gears and

cryo treating? STOP WASTING PEOPLE'S TIME if you cant afford it.



Junk yards give a warranty- yeah, 30 days if im not mistaken, on the part

only. A tranny shop will give you a 2 year warranty, you can even

swap the tranny in and out yourself, they will still warranty it.



So your answers have been given to you, if you read carefully instead of getting all pissy about the answers given.

Either get a TII tranny and get a custom driveshaft, or drive normal, or get yours rebuilt.

hahah.. Rob has a way with words.. but he always has a good point.. Damn him.. He even made me change my mind about fiberglass body parts.. which I used to hate.. Oh and Don't ask me to use the search young'n I am too lazy for that..

yes, you need the crossmember that goes with the tranny though



mike

How about i ask where i can find some Synchros gears and get a rebuild kit? (which should be cheaper than 500+). Oh wait.. i did that. If im wasting YOUR time then DONT POST. Easy enough? The only answers i got "pissy" about were pointless ones such as "stop launching at redline" which OBVIOUSLY is not the problem. I said in the FIRST post that it was my 2nd and 3rd gear synchros that were giving me problems, not my first gear, so obviously im not the only one not reading and wasting other peoples time.

Cool, so now I can get an S4 junkyard tranny to mobilize my vert while I spend the money on getting the other sucker rebuilt..

find your gears at the dealer or a tranny shop, flip thru your yellow pages instead of trying to find answers off the internet.

be prepared though, rebuilding a tranny isnt easy, by the time you buy what you need along with the tools you could probably just get it done.



Im guessing you didnt have much luck at RX-7.com if you are still here seeking answers, thats the only part that got me worked up, you didnt like the answers given, so I guess you threaten to go to RX-7.com? Just go there and ask your questions as well, no need to talk about it. ON that note, im going to watch some TV, lol.

Your best bet would still be to call pineapple racing since they do racing trannies for the FC, they offer it on the site so they may sell you the parts or have info on the hardened synchros.. But it would still be best to have it rebuilt by them sine they will honor the warranty if they do it.. ....

I am watching "A Man apart" and a lil later I am gonna Watch "X-men 2"

Yeah man, im just frustrated period with this car lately. All in all i am pleased with the answers given but when there is a smart ass answer trying to make me look bad i do get a little defensive about it. Im not worried about the work as for the rebuild, its something i want to learn anyhow and i have a tranny around to rebuild while im still driving this one. I found some kits that were under the $200 mark and i was hoping a set of hardened synchs would be under 200 also which would be great. I didnt think about looking locally, i just figured that performance parts for older Rx7s would have to be found at a specialized shop usually easier found through word of mouth on a forum. Anywho, sorry to cause friction and no hard feelings.



Thanks all,

Charles

thats cool man.. anyways pineapple has as good REPUtation so they can give you good help and point you in the right direction..

damn..... harsh words

no need to fight here



we are here to help each other out not fight.....

Don't make me have to whoop any of you with my belt..

yes you have a REPUtation to uphold!



mike

Alright.. Damnit.. **Takes ofF Belt**



Come here..! (chasing j9fd3s around)

haha, i make bad joke! how REPUgnant of me!



mike