Difference in turbo vs non turbo 6 spd trans?
 

While shopping for a 6 speed trans I found a place that has a turbo and a non turbo trans. Is there any difference between the two?

Thanks!

To my knowledge, there is no difference.
Curious to know what price you were quoted though.

i thought I heard the turbo trans was shot peaned or something.

Aren't they both the same trans from the RX-8?

Edit: I'd heard that too, the shot peaning...

that would be my guess too....

http://www.miata.net/faq/brochures/2...z_brochure.pdf

the msm brochure says that its got the shot-peen-hardened gears.

That's interesting... but can you find something that says the N/A 6 spd is not shot peened?

working on it......

sorry it took so long.....

http://members.aol.com/solomiata/Drivetrain.html


it talks about 5 speed turbo trans. but thats all i could find in my attention span while watching the Rangers KILL the Flyers. maybe ill look it up more in detail later.

does that work?

I have a '99 AE 6 speed at 300 RWHP, no problem... All the six speeds are tough. And for the record, no information exists about the N/A 6 speed not being shot peened. My suspicion is that they both are... If not, disassemble and shot peen it. No big deal.

Mark

how much can shot peening help?
if i was to make a guess i would have to say that both are shot peened, reason being, why would mazda go backand shot peen a transmission thats already proven to be more than adequate...you know?

I wouldn't be surprised either way, seeing as the MSM has larger axles than the non turbo cars. And the axles on the standard 7" diff are more than strong enough for a double stock power car.

again, good point...

So far $600 for a local 82k non turbo trans, have to call them tomorrow to check the price on the turbo trans.

Are you selling a 6 speed w/ shifter and plate?

a question for you guys:

I just put a 2002 SE on hold. I am very familiar with the M1, not with the M2 yet. How much do the 2002 SE wheels weigh? Has anyone found a place to get a set or a single one quick? One of the wheels looks like it hit a pot hole.

Also, what is the difference between the 6 speed SE and the regular for 2002? Is this 6 speed also a little beefed up?

Thanks for the help.

Wheels are easy to find... Junkyards everywhere have them.

www.car-part.com

The six speed is always stronger than the stock 5 speed, and by a significant margin. Broken six speeds are rare. Only 1 or 2 broken ones have been reported thus far on the net.

Mark

Yeah, same price but would have to be shipped. Get the local one.

I just looked up the 6 speed internal parts in MazdaEPC and the answer is yes, the turbo has a different gear set than the non turbo.

Example:
99-05 non turbo 2nd gear is part Y601-17-251, retail $188.55
04-05 turbo 2nd gear is Y611-17-251, retail $191.90
I would interpret this data as the turbo trans has peened gears and the non turbo car does not.

The Torsen LSD in the turbo car is also completely different than the non turbo LSD.

Thanks for looking up that info Ben. Another plus to getting the turbo trans is that there is a good chance that it has less mileage on it than the non turbo transmissions.

Update:
The 'local' transmission is over 1,000 miles away from me. Up for grabs:

For pickup in Louisville, Ky - 2000, 85k mile, 6sp, will include shifter if you ask nicely, $600. 800-828-1075

04-05 MSM rear end is a 4.10 whereas the 02 SE is a 3.90. When i first got my 02SE, i though the 6spd was going to feel short for having 250rwhp....... but it doesn't. ANd it helps that i have a 7500rpm redline :) (MSMs redline at 6500)

I also hear that the turbo 6spd was slightly beefed up...kinda like how Mazda beefed up the 1.8 5spd trans.

IIRC the SE wheels are the cross-spoke style (al la BBS-ish) Enkeis. Dunno about the weight, but i'm pretty sure it's close to the regular 16" wheel on the 01+ cars. As for finding one, it could be difficult....might as well buy some wheels that you like.

http://www.miata.net/faq/images/2002se.jpg

18lbs

http://www.miata.net/faq/wheel_weights.html

huh? I thought all five speeds were the same?

for the most part, they are the same. they added a double cone synchro to 2nd gear in 94. doesn't make it any stronger.

Hmm.. i thought they did that in 95.. Good to know..

well my 94's second gear is slightly less notchy then it was in my 92 but it could also just be the previous owners shifting ability.

Ben is correct.

That's what i get for listen to one source rather than many.

Local Miata "Guru" .. um .. yeah "Guru".. told me that the change was made in 95 after tranny issues started happen when they switched to the 1.8.

This appears to be incorrect info.

I'm going to raise the BS flag with him after work today.. heh..

:bsflag:

Interesting... Obviously it didn't cost much to add shot peening to the mix then.

Question now is, how much stronger are they?

Mark

Yeah, but, that's $3.35 TIMES SIX

I wonder what the differences in the diffs are! Gears I can swap, but raw-strong I want....

Mark, have you experimented with different tranny fluids to see which one appeared to perform the best? I finished my 6-speed swap, just using generic 75w90 gear oil to put some mileage on it to clean it out, then I was going to run Amsoil 75w90 Severe Gear like I did with the 5-speed. It's nice I don't have to sweat the turret oil fill, and can fill the tranny through the turret instead of spewing the nastiest of stinky lubes all over myself and the driveway.

600$ local pickup is a good deal i might have to look into that dvcn

No, I'm not that ----... I simply grab the container that says Mobil One full synthetic and in Mobil I trust. Simple as that.

Mark

Thanks. I just found that thread as well. Thats a good one.

Good to know. I took a test drive, and it sounded to me like there was a slight hum coming up from below the shift lever. I then learned that the owner replaced the engine a few months prior at a nearby shop. my guess is that that sound deadening material and that rubber wheather cover under that leather shift boot was lost and not replaced by the local shop.

Have any of you had experience with this before? Has anyone heard this sound?

Thanks for the input.