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Old 12-24-2009, 05:58 PM   #1
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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
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Old 12-24-2009, 06:05 PM   #2
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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.
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Old 12-24-2009, 06:50 PM   #3
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thanks for the reply.
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Old 12-24-2009, 07:53 PM   #4
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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.
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Old 12-24-2009, 08:22 PM   #5
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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?
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Old 12-24-2009, 08:25 PM   #6
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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?
want to sell?
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Old 12-24-2009, 08:33 PM   #7
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want to sell?
Oh no. I am very happy with the set up.
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Old 12-24-2009, 08:39 PM   #8
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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.
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Old 12-24-2009, 09:02 PM   #9
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MMS also sold a 4.8 r&p.
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Old 12-24-2009, 09:20 PM   #10
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yes they still carry the 4.8 @ $279 and the 4.44 @ $479. figures I need the more expensive gear.
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Old 12-24-2009, 09:35 PM   #11
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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
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Old 12-24-2009, 11:41 PM   #12
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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
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.
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Old 12-24-2009, 11:43 PM   #13
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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.
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Old 12-24-2009, 11:51 PM   #14
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What Joe said... and for under $300 a set. Market is right for this...
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Old 12-24-2009, 11:57 PM   #15
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What would the ideal gear ratio be for drag racing? And where would I get it from?
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Old 12-25-2009, 12:15 AM   #16
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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.
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Old 12-25-2009, 12:38 AM   #17
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Originally Posted by Corky Bell View Post
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
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Old 12-25-2009, 12:58 AM   #18
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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?
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Old 12-25-2009, 04:58 AM   #19
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Old 12-25-2009, 12:22 PM   #20
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Quote:
Originally Posted by pitbull113 View Post
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
Quote:
Originally Posted by pitbull113 View Post
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

Quote:
Originally Posted by miataspeed2005 View Post
some dude its trying to tell me that rx8 LSDs will fit in a miata housing?
real or not?
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Originally Posted by Ben View Post
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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