mx5cartalk.com

Posted: **Fri May 16, 2008 10:09 pm**

What diff ratios did the NA6 have?

I just got a 4.30:1 gear set from Japan that was supposed for an NB8 but it is smaller and must be from the NA6 But I cant find any info of what ratios were available. I am wondering if it is actually from an MX5 at all.

Thanks Duane

Posted: **Fri May 16, 2008 10:47 pm**

from memory NA runs 4.3
NB8A - 4.1
NB8B-C - 3.9

Posted: **Fri May 16, 2008 10:49 pm**

NA6 are 4.3, NA8 & NB8 are 4.1

or so says miata.net

Posted: **Sat May 17, 2008 3:59 pm**

Thanks Guys.

No the Japanese NB had the 4.30:1 in them and that is what this was supposed to be but this is smaller than the normal NB8 crown wheel so I am assuming it is an NA6 crown wheel.

Duane

Posted: **Sat May 17, 2008 11:09 pm**

Some jap spec NBs did have 4:3 these were the NRA version I believe. Thats what my diff is, it is the same size as any other na8/nb.

It sounds much like you have a na6 crownwheel.

mx5cartalk.com

4.3:1 in an NA6

4.3:1 in an NA6