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RX8 ring and pinion

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Old Dec 24, 2009 | 04:58 PM
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Default RX8 ring and pinion

So I read on this website that the 4.44 ring and pinion from an rx8 fits the 94-97 miata. So I bought one and the ring gear is too big. Wrong gear from seller or wrong info?? Anybody try this? Please help a newb out...TIA
Old Dec 24, 2009 | 05:05 PM
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Originally Posted by pitbull113
So I read on this website that the 4.44 ring and pinion from an rx8 fits the 94-97 miata. So I bought one and the ring gear is too big. Wrong gear from seller or wrong info?? Anybody try this? Please help a newb out...TIA
I think I remember that thread, and I'm pretty sure several people said it wouldn't fit in a NA/NB, but only possibly in a NC.
Old Dec 24, 2009 | 05:50 PM
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thanks for the reply.
Old Dec 24, 2009 | 06:53 PM
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I've also read many many things saying it won't fit. It should fit the NC as Dustin said though.
Old Dec 24, 2009 | 07:22 PM
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I have a 4.44:1 gear. I got it from Mazda Motorsports a few years back. From a Kia maybe?
Old Dec 24, 2009 | 07:25 PM
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Originally Posted by miata2fast
I have a 4.44:1 gear. I got it from Mazda Motorsports a few years back. From a Kia maybe?
want to sell?
Old Dec 24, 2009 | 07:33 PM
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Originally Posted by pitbull113
want to sell?
Oh no. I am very happy with the set up.
Old Dec 24, 2009 | 07:39 PM
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Had to try. thanks for all the responses. so it goes without saying do NOT believe everything you read on the internet.
Old Dec 24, 2009 | 08:02 PM
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MMS also sold a 4.8 r&p.
Old Dec 24, 2009 | 08:20 PM
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yes they still carry the 4.8 @ $279 and the 4.44 @ $479. figures I need the more expensive gear.
Old Dec 24, 2009 | 08:35 PM
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Considering all the torque of the turbos, that first gear is not of much use, and the fast cruise mode (west Texas), what final drive ratios do you guys feel would offer the best combo of fun?

Corky
Old Dec 24, 2009 | 10:41 PM
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Originally Posted by Corky Bell
Considering all the torque of the turbos, that first gear is not of much use, and the fast cruise mode (west Texas), what final drive ratios do you guys feel would offer the best combo of fun?

Corky
I guess it depends on what you are doing. I am a drag racer using slicks, and I never drive the car very far. I love the combo, but would hate it if I did more long haul driving.
Old Dec 24, 2009 | 10:43 PM
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~ 3.3:1. That'll give you 70 MPH at somewhat under 3,000 RPM on a 5 speed, and probably make first gear useful again.

I've got a set of 3.636 on the shelf, and have decided I'll probably be installing it in my car next month, as I'll be doing a lot of freeway commuting. We'll see how that works out. Should put 70MPH right about at 3,100 RPM.
Old Dec 24, 2009 | 10:51 PM
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What Joe said... and for under $300 a set. Market is right for this...
Old Dec 24, 2009 | 10:57 PM
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What would the ideal gear ratio be for drag racing? And where would I get it from?
Old Dec 24, 2009 | 11:15 PM
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Originally Posted by dustinb
What would the ideal gear ratio be for drag racing? And where would I get it from?
The ideal gear for all drag racing is 4.1:1, regardless of tire size, transmission gearing, engine powerband, etc.

As it happens I have a set in my garage in the 1.8-style fitment. I'll sell 'em to you for $500.
Old Dec 24, 2009 | 11:38 PM
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Originally Posted by Corky Bell
Considering all the torque of the turbos, that first gear is not of much use, and the fast cruise mode (west Texas), what final drive ratios do you guys feel would offer the best combo of fun?

Corky
Six speed + 225/45/15...

Probably 3.0 to 3.3. This is a bit backwards compared to the rest of the thread though. :P
Old Dec 24, 2009 | 11:58 PM
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Originally Posted by Joe Perez
The ideal gear for all drag racing is 4.1:1, regardless of tire size, transmission gearing, engine powerband, etc.

As it happens I have a set in my garage in the 1.8-style fitment. I'll sell 'em to you for $500.
WOW is that $500 shipped?
Old Dec 25, 2009 | 03:58 AM
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Old Dec 25, 2009 | 11:22 AM
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Originally Posted by pitbull113
So I read on this website that the 4.44 ring and pinion from an rx8 fits the 94-97 miata. So I bought one and the ring gear is too big. Wrong gear from seller or wrong info?? Anybody try this? Please help a newb out...TIA
Originally Posted by pitbull113
Had to try. thanks for all the responses. so it goes without saying do NOT believe everything you read on the internet.
Epic fail, lack of comprehensions

Originally Posted by miataspeed2005
some dude its trying to tell me that rx8 LSDs will fit in a miata housing?
real or not?
Originally Posted by Ben
NC maybe, NC diff is pretty close to RX8

NA/NB ring and pinion will interchange into NC, and I assume RX8 as well.
Assumtion is the mother of all **** ups.

The NC and Kia R&Ps are known fitments.
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