Reply With QuoteYou might want to give Tom McGrath a call... I hear he has experience with that particular swap.
6-Speed to a 5-Speed
So let us hypothetically say someone wanted to convert a 2002 Miata from a 6-Speed to a 5-Speed. What would you need to get? I know the rear end needs to be changed as well as the transmission itself. But are there any other items that you need to change??
I am of course wanting to stay within the SCCA rules for a Stock class car.
TIA
You might want to give Tom McGrath a call... I hear he has experience with that particular swap.
You don't have to change the diff, unless you wanted a shorter final drive ratio.
If you do decide to sell the diff or swap it, please let me know.
Trackdog Gary has swapped a 5 speed in place of 6 speed on a local customers car, but kept the 3.9 torsen for a great track setup. Auto-x would be a different story and you might benefit from a 4.10 or 4.30 setup with the 5 speed.
If you swap the trans, supposedly you need the metal gasket/template that goes between the trans and the engine, but I don't know for sure.
6 speed on left, 5 speed on right.
I have a 4.10 gear set for sale really cheap if you want it. You will also need the speed-o sensor I believe. Not 100% though
2005 Lava Orange MSM #601/1428
211 rwhp, 195 ft. lbs on 1/6/07
This depends on which rear end he decides to use.Originally Posted by Magma
hopefully one over 18
2005 Lava Orange MSM #601/1428
211 rwhp, 195 ft. lbs on 1/6/07
Well I would want to go with whatever ratio was stock on a 2002 Miata with a 5-Speed.
I guess I need to research if a 5-Speed was available in a 2002 Miata equipped like the one we Hypothetically have.......
Thanks for all the Hypothetical help!
Why not just pull the extra gear out of the existing tranny?
Just do like Ken O and sell it and buy another, less hassle.
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I have a 5-speed tranny for sale, but you have to buy all the rest of the parts attached to it.
My friend bmcreider wants a six speed and currently has a five...
You'll need a different diff along with a different transmission. The '99-'05 5-speed cars all had a 4.30 rear end, but the 6-speed cars had a 3.90, iirc.So let us hypothetically say someone wanted to convert a 2002 Miata from a 6-Speed to a 5-Speed. What would you need to get? I know the rear end needs to be changed as well as the transmission itself. But are there any other items that you need to change??
I am of course wanting to stay within the SCCA rules for a Stock class car.
TIA
Just out of curiosity, why bother? The '02 is never going to be as competitive as your '99 is (and the '99 isn't exactly king of the hill any more, either), regardless of which tranny it's got. Seems like an awful lot of work to me to make the car slightly less uncompetitive. Why not just leave the 6-speed in it and drive it like that? It'll still be fine for non-National stuff. lugnutjon seemed to do quite fine back in the day with his overweight 6-speed car.
If you do swap it you'll also lose hurt resale, since most people will expect a 6-speed with the option packages on that car and the average numbnuts assumes a 5-speed is "inferior". If it has more speeds, it must be more better.
Iain
"We don't stop playing because we grow old, we grow old because we stop playing." - George Bernard Shaw
What about brake rotor sizes. I think the 6 speed front rotors are bigger also.
I don't think ABS was available on a 5 speed car.
Yea brake rotors are larger 10.6" front & 10.9" rears the Yellow car also has ABS.
The Brochure we got with the '02 shows the 6-Speed was an option on an LS & ABS was only an option on an LS..... Need to find the window sticker and see how they listed the ABS.
Hhhhhmmmm
Mick, if you decide to swap diffs, I have a 4.30 in my miata that I'd be willing to trade you.
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