6 speed Miata Tranny - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


WTB Wanted to buy ads. Designated trademarks and brands are the property of their respective owners. forum cannot be held responsible for the outcome of any transactions.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 05-02-2008, 03:57 PM   #1
Elite Member
Thread Starter
iTrader: (3)
 
AbeFM's Avatar
 
Join Date: Aug 2006
Location: San Diego, CA
Posts: 3,048
Total Cats: 8
Default 6 speed Miata Tranny

Ok, so, it's like I'm always posting this thread, then deciding it's too much work/money, but... What's a guy likely to pay for a 6 speed, which ones are worth getting (the MSM 6 speed is better, right?)

I thought I heard somewhere it's the same tranny in the RX-8, is that a total lie?

Just trying to figure out what to do for my poor little NB...
AbeFM is offline   Reply With Quote
Old 05-02-2008, 04:40 PM   #2
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

Not the same as RX8.
$1000.
MSM is not better.
Need 3.9 or lower ring&pinion or 1st is completely useless.

Keep your 5-spd unless you plan to run 300whp+ and get in on the 3.636:1 group by.
samnavy is offline   Reply With Quote
Old 05-02-2008, 05:04 PM   #3
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

$600-1000
MSM is the essentially the same, but the gears are shot peened
Requires 3.90 or taller rear to be worth a ****
Not even close to being the same as RX8 or NC
Ben is offline   Reply With Quote
Old 05-02-2008, 05:12 PM   #4
Elite Member
Thread Starter
iTrader: (3)
 
AbeFM's Avatar
 
Join Date: Aug 2006
Location: San Diego, CA
Posts: 3,048
Total Cats: 8
Default

Already have the 3.6 gears and speedo sitting in a box in my garage. I would like to think I'll make monster power, though I don't think my car is slow - but at least I want a better cruising gear. I think my 5 speed might be a bit tired, maybe not, I dunno.

For $600 I'd be in, for 1k... I;d be in.... later.
AbeFM is offline   Reply With Quote
Old 05-02-2008, 05:44 PM   #5
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

put money aside, keep your eye out, and when you see one come by for $500-600 jump on it like a horny school girl
Zabac is offline   Reply With Quote
Old 05-02-2008, 05:48 PM   #6
Elite Member
iTrader: (3)
 
Join Date: May 2006
Location: Houston, TX
Posts: 2,900
Total Cats: 0
Default

every now and then one shows up on ebay or craigslist for $600-750 buy it now. you just have to keep an eye out.
Arkmage is offline   Reply With Quote
Old 05-02-2008, 06:50 PM   #7
I'm Miserable!
 
Join Date: May 2007
Posts: 589
Total Cats: 0
Default

I think the Miata 6 sp is closer to the Toyota IS300 than any Mazda.

Both being Aisin's from around the same period just a guess though.
MX5-4me is offline   Reply With Quote
Old 05-02-2008, 08:49 PM   #8
Elite Member
Thread Starter
iTrader: (3)
 
AbeFM's Avatar
 
Join Date: Aug 2006
Location: San Diego, CA
Posts: 3,048
Total Cats: 8
Default

Yeah - I might do that.


I think I checked into the IS300, and I think it was a good fit, or close enough to be reasonable to do. What I remember is the gear spacing was WAY different. Bottom gears closer together and top gears further apart or visa-versa, but I remember thinking it would mess with the character of the car a lot.
AbeFM is offline   Reply With Quote
Old 05-02-2008, 11:32 PM   #9
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

You've seen this thread: http://forum.miata.net/vb/showthread.php?t=236118
Post #106 is where it gets interesting.
samnavy is offline   Reply With Quote
Old 05-03-2008, 05:00 AM   #10
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,363
Total Cats: 1,323
Default

Quote:
Originally Posted by samnavy View Post
MSM is not better.
MSM has shotpeened gears, as Ben said.

Quote:
Originally Posted by samnavy View Post
Need 3.9 or lower ring&pinion or 1st is completely useless.
4.10s here, 1st is very short but not useless.

Quote:
Originally Posted by samnavy View Post
Keep your 5-spd unless you plan to run 300whp+ and get in on the 3.636:1 group by.
Grenaded 3rd gear in my 5-speed at 220.
Savington is online now   Reply With Quote
Old 05-03-2008, 12:39 PM   #11
Elite Member
iTrader: (12)
 
Join Date: May 2007
Location: Austin, TX
Posts: 1,923
Total Cats: 0
Default

The 6 speed seems good at higher numbers, but how much can the factory rear end and gears handle?
JayL is offline   Reply With Quote
Old 05-04-2008, 07:36 PM   #12
Junior Member
 
Join Date: Jun 2006
Location: Huntsville Alabama
Posts: 51
Total Cats: 0
Default

If anyone is looking for a good 6 speed I just got another 2002 Limited Edition that I'm parting out w/ a 6 speed. See www.partsgroup.com . $750..
Tom
partsgroup is offline   Reply With Quote
Old 05-04-2008, 07:43 PM   #13
Miotta FTW!
iTrader: (24)
 
Splitime's Avatar
 
Join Date: Jun 2006
Location: Chicagoland, IL
Posts: 4,295
Total Cats: 26
Default

Quote:
Originally Posted by partsgroup View Post
If anyone is looking for a good 6 speed I just got another 2002 Limited Edition that I'm parting out w/ a 6 speed. See www.partsgroup.com . $750..
Tom
Sigh, wish I had the cash.

Tom = good peoples.
Splitime is offline   Reply With Quote
Old 05-04-2008, 08:47 PM   #14
Elite Member
iTrader: (12)
 
Join Date: May 2007
Location: Austin, TX
Posts: 1,923
Total Cats: 0
Default

Quote:
Originally Posted by partsgroup View Post
If anyone is looking for a good 6 speed I just got another 2002 Limited Edition that I'm parting out w/ a 6 speed. See www.partsgroup.com . $750..
Tom
PM sent, I think I want this. Much cheaper than what I have seen them go for in the Seattle area.
JayL is offline   Reply With Quote
Old 05-05-2008, 02:13 PM   #15
Elite Member
Thread Starter
iTrader: (3)
 
AbeFM's Avatar
 
Join Date: Aug 2006
Location: San Diego, CA
Posts: 3,048
Total Cats: 8
Default

That's interesting, yeah, 3.3 was what I always thought would be awesome on the car, though I'll admit I was worried it would be too much.

Before I could sit around wishing, but now it's a ****-or-get-off-the-pot kinda thing....

Certainly adds plenty of top speed, and it seems to mostly just leave the lowest gears alone, only throwing in a few more shifts at high speed relative to the 5 speed.
5s4.1 6s3.6 6s 3.3
37 35 38
62 58 64
88 80 88
117 105 115
143 132 145
---- 156 172
If the formatting carried through, you can see that a 6 speed with 3.6 basically lowers your gearing (I sure with I knew if I had a 4.1 or a 4.3) slightly. The only real difference is there's a gear switch at ~100 you'd normally be waiting for.

I will say something in these numbers seems off, I think my 4th gear runs out much closer to 100 mph even.
5s4.3
36
59
84
111
137
132

I guess the tire size assumption might be off here.

At any rate, the 3.3 doesn't seem to be much of a change from my 5 speed set up.
AbeFM is offline   Reply With Quote
Old 05-05-2008, 03:26 PM   #16
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

So in conclusion, a 6 spd with the 3.3 is THE way to go?
Zabac is offline   Reply With Quote
Old 05-05-2008, 04:07 PM   #17
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

No, not necessarily. The 6 spd + 3.6 is going to be the best set up for most people. Depends on your goals and needs.
Ben is offline   Reply With Quote
Old 05-05-2008, 04:31 PM   #18
Elite Member
iTrader: (39)
 
Zabac's Avatar
 
Join Date: Sep 2007
Location: High Point NC
Posts: 4,854
Total Cats: 8
Default

Lots of power!
Zabac is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1994 Spec Miata Race Car SM/SM2/SSM For Sale Quinn Cars for sale/trade 6 10-23-2016 08:58 AM
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 07:13 AM
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM
VR6 to Miata Swap ScrapinMX5 Meet and Greet 8 09-28-2015 02:04 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:48 AM.