Who's Right?

[nissan slut]

I wrote my favorite SCC writer, Dave Coleman, this letter:

In your May 2003 article I read that the RX-8 uses the same 6-speed as the S15 Silvia. And it is generally confirmed that the 6-speed transmission is the older S13 and S14 5-speed with another gear jammed in it. So is Nissan selling transmissions to Mazda? I'm 96% sure that Nissan manufactures the transmission. Or is there another company that is selling the transmissions to both companies? Please clear this up, because I hope you guys didn't publish that to just fill some space.

And he wrote back:

Nope, it's a different transmission made by Aisin, I believe. No
relationship between the 5 and 6 speed as far as i know.


So............?

[uiuc240]

he's right. it's made by Aisin. they also use the same tranny in the miata. and i think, except for the shift linkage, the gearbox is the same for the SE-R Spec-V as well.

However, these cars use different gear ratios...but the case and whatnot is the same.

Eric

[Zemus]

special made tranny, kinda like the skyline tranny, not made by nissan, along with the 6speed supra tranny, super expensive to buy or fix/replace. Their alright thought.

[nissan slut]

Then what happened to all of this talk about the six-speed is weak because it's just the 5 case with another gear jammed in it. Is that still true? Hogwash?

[uiuc240]

yes, myth. that was all speculation over the internet. people have had the 6-speed installed with high power applications and no magical disasters. however, by default, if the 6-speed tranny fits in the same space occupied by the 5-speed, it obviously has smaller gears (something's got to give).

does that answer your question? if you want a 6-speed with your SR, go for it. i'd love one myself, simply for the fact that the 6th gear is a nice, low 0.767:1 6th gear. That would be much better for the highway than my 0.838:1 SR 5th gear (KA has 0.759:1 5th).

Eric

[ca18guy]

Originally posted by uiuc240
he's right. it's made by Aisin. they also use the same tranny in the miata. and i think, except for the shift linkage, the gearbox is the same for the SE-R Spec-V as well.

However, these cars use different gear ratios...but the case and whatnot is the same.

Eric

I really REALLY doubt that the Miata and SE-R share tranny's, seeing that the SE-R is FWD :p The SE-R does share its tranny with the Maxima.

[AKADriver]

and the Hyundai Tiburon V6!

[uiuc240]

Originally posted by ca18guy
I really REALLY doubt that the Miata and SE-R share tranny's, seeing that the SE-R is FWD :p The SE-R does share its tranny with the Maxima.

I know, I was thinking the same thing, but I *swear* I read that a while back. Gears mounted on shafts are the same for FWD and RWD trannies...it's the case that matters. And that's exactly what I meant.

But I could be wrong...:D

Eric