Transmissions

[GTOTT97]

So I have some plans in the works for Ashely in the next year that involves a swap, I can use either the 5 or 6 speed but I don't know which is stronger and I'm kinda of turned off of how everyone describes the 6 speed shift. Power wise it'll be around 350-400 wheel. All insight is great appreciated.


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[Shwing]

I believe the strongest is the 6 speed in the mazdaspeeds but I may be wrong, shift wise i'll say I prefer the 5 but the 6 really isn't that bad

[DanBrown]

6 speed usually holds around 350hp, even though torque is the real killer, and the 5 Speeds usually around 275hp.
You might be able to get 300hp on a 5-speed, but it wouldn't last long.

[GTOTT97]

Thanks guys


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[LagunaRoadster]

You'll want the 6-speed. I destroyed a 5-speed with about 270 torque.

[Reverend Greg]

I've purchased an AR-5 from a Solstice, the coupled with a custom bell housing, a custom clutch disc, and PPF, will get me to a comfortable 350 ftlbs. But, working for a clutch company helps.
Greg

[sharkythesharkdogg]

I've purchased an AR-5 from a Solstice, the coupled with a custom bell housing, a custom clutch disc, and PPF, will get me to a comfortable 350 ftlbs. But, working for a clutch company helps.
Greg

Is there a different trans in the 2.4l Solstice vs. the 2.0l GXP?

[91LudeSiT]

I'm pretty sure they both use the same AR5.

[kung fu jesus]

Maybe just go for the unibrow engineering approach and use an FC3S T2 transmission and adapter plate? I know Andrew Kidd was still fragging 6sp transmissions at those power levels. 400-500hp rating on those gives you some headroom.

http://www.miataturbo.net/miata-parts-sale-trade-5/tii-transmission-adapter-plate-miata-71777/

[Reverend Greg]

Kidd was working on the T-5 swap last I heard. But no PPF, kinda kills it for me. The AR-5 has been "said" to handle 800 HP. But that's anecdotal. The expense of the trans and provisions for a PPF made the decision for me. We were thinking that a 350z trans would work too. But, PPF, you know.
Greg

[GTOTT97]

To be frank it's a FC Turbo II swap, I found some info on how to swap the FC bell housing onto NA and NB transmissions


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[wildfire0310]

To be frank it's a FC Turbo II swap, I found some info on how to swap the FC bell housing onto NA and NB transmissions


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Got some bad news then.
The fc swap is from the NA rotory transmissions with the miata 5 spd only.

The T2 transmission and the 6-spd are both different front each other and different from the 5 spd miata box and not interchangeable.

**source**. Ran an rx7 transmission with swapped bell housing and tails shaft on my old 91 brg

[GTOTT97]

Got some bad news then.
The fc swap is from the NA rotory transmissions with the miata 5 spd only.

The T2 transmission and the 6-spd are both different front each other and different from the 5 spd miata box and not interchangeable.

**source**. Ran an rx7 transmission with swapped bell housing and tails shaft on my old 91 brg

Gotcha, thanks


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