Notices
Series I Tech Garage The place to discuss anything technical about the RX-8 that doesn't fit into any of the categories below.

Transmission swap, Series 2 in a Series 1

Old 07-13-2011, 09:38 PM
  #1  
Mo. Val's White Comet
Thread Starter
iTrader: (1)
 
MongoRX's Avatar
 
Join Date: Jun 2011
Location: Moreno Valley
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
Transmission swap, Series 2 in a Series 1

This may seem just stupid but just to be sure, is the series 2 transmission a direct fit for the series 1s? If not what other modification would you have to do to make it fit? Thanks in advance!
MongoRX is offline  
Old 07-13-2011, 09:43 PM
  #2  
Phone Booth'd
iTrader: (4)
 
fuztupnz's Avatar
 
Join Date: May 2009
Location: Cincinnasty
Posts: 2,441
Likes: 0
Received 0 Likes on 0 Posts
Yes. I believe it fits with no modification. Olddragger is the man to ask. I know he's done it as well as a few others.


Calling OD!!!! Calling OD!!!!
fuztupnz is offline  
Old 07-13-2011, 09:45 PM
  #3  
Grasshopper
iTrader: (1)
 
Jon316G's Avatar
 
Join Date: Dec 2006
Location: Streetsboro, OH
Posts: 6,779
Likes: 0
Received 12 Likes on 12 Posts
The S2 transmission will fit in a S1 vehicle, I did this a few months ago.
Its a little bulkier, so I recommend attaching the slave cylinder before lifting the transmission all the way up or else you won't be able to get your hands up there.

Only modification will be on the reverse and neutral switches/sensors.
The connectors are different between the S1 and S2 transmissions, so you'll need to cut and wire your own disconnects.
I just used quick disconnect terminals and had male ends on one switch and females on the other, that way I don't mix anything up.
If I was better prepared I might have ordered weather-proof connectors and crimped my own pins, but they've been holding up so far.
Jon316G is offline  
Old 07-13-2011, 09:49 PM
  #4  
Phone Booth'd
iTrader: (4)
 
fuztupnz's Avatar
 
Join Date: May 2009
Location: Cincinnasty
Posts: 2,441
Likes: 0
Received 0 Likes on 0 Posts
Sweet, didn't know you did it too Jon. What do you think of it so far?
fuztupnz is offline  
Old 07-13-2011, 09:52 PM
  #5  
Grasshopper
iTrader: (1)
 
Jon316G's Avatar
 
Join Date: Dec 2006
Location: Streetsboro, OH
Posts: 6,779
Likes: 0
Received 12 Likes on 12 Posts
Originally Posted by fuztupnz View Post
Sweet, didn't know you did it too Jon. What do you think of it so far?
Never got a chance to drive it
This was for a local guy who has a dedicated RX8 race car.
But he told me that it performs very well, so I'll likely do it on my car too.
Jon316G is offline  
Old 07-13-2011, 10:13 PM
  #6  
Mo. Val's White Comet
Thread Starter
iTrader: (1)
 
MongoRX's Avatar
 
Join Date: Jun 2011
Location: Moreno Valley
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
Thanks for your guys replies! I was just weighing options because im pretty sure my second gear is going to call it quits soon. Id rather have a more dependable unit than just replace a gear and a syncro at mazdas prices just to have it go in another 20k
MongoRX is offline  
Old 08-28-2011, 07:44 PM
  #7  
Registered User
iTrader: (1)
 
Join Date: Feb 2009
Posts: 72
Likes: 0
Received 0 Likes on 0 Posts
wires are the same colors just different connectors?
rxat2012 is offline  
Old 08-28-2011, 07:51 PM
  #8  
Grasshopper
iTrader: (1)
 
Jon316G's Avatar
 
Join Date: Dec 2006
Location: Streetsboro, OH
Posts: 6,779
Likes: 0
Received 12 Likes on 12 Posts
Originally Posted by rxat2012 View Post
wires are the same colors just different connectors?
I don't recall if the wire colors were the same.
I used a meter to check continuity at each connector on the S2 tranny to see which was the reverse and neutral switch.
Then matched to the known wiring on the car.
Jon316G is offline  
Old 08-30-2011, 12:52 AM
  #9  
Registered User
iTrader: (1)
 
Join Date: Feb 2009
Posts: 72
Likes: 0
Received 0 Likes on 0 Posts
well i put mine in only to find out that there is no shifter for it and the s1 dosnt fit.... awesomeness... and the two sensor how do you tell witch is witch they are identical and both have blue wires
rxat2012 is offline  
Old 08-30-2011, 12:56 AM
  #10  
Grasshopper
iTrader: (1)
 
Jon316G's Avatar
 
Join Date: Dec 2006
Location: Streetsboro, OH
Posts: 6,779
Likes: 0
Received 12 Likes on 12 Posts
Shifter is different because you have to press down, left, forward to go in reverse instead of down, right, back like on the S1.

Here is my DIY for testing the sensors on a S1 tranny:
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-test-neutral-reverse-switch-200453/
Use the same idea to find out what the sensors are on the S2 tranny.
And on your car, the white connectors are for the neutral switch and the black connectors are for the reverse switch.
Jon316G is offline  
Old 08-30-2011, 02:55 AM
  #11  
Charles Bundy
iTrader: (5)
 
Grace_Excel's Avatar
 
Join Date: Jun 2010
Location: Sherman Oaks, CA
Posts: 2,395
Received 3 Likes on 2 Posts
I've considered doing this since my third gear started grinding and when I found out that it's a direct fit thanks Jon316G for the added info.
Grace_Excel is offline  
Old 07-01-2012, 11:24 PM
  #12  
Registered
iTrader: (7)
 
kma5783's Avatar
 
Join Date: Nov 2009
Location: Tampa, FL
Posts: 833
Likes: 0
Received 4 Likes on 4 Posts
Bumping this thread rather than starting a new one...

Does anyone know if the Reverse and Neutral Control Switches from the Series 1 Trans will work on the Series 2?
kma5783 is offline  
Old 07-02-2012, 12:38 AM
  #13  
El Jefe
 
yomomspimp06's Avatar
 
Join Date: Mar 2007
Posts: 1,796
Received 4 Likes on 4 Posts
that's answered in this thread I believe...
yomomspimp06 is offline  
Old 07-02-2012, 12:51 AM
  #14  
Registered
iTrader: (7)
 
kma5783's Avatar
 
Join Date: Nov 2009
Location: Tampa, FL
Posts: 833
Likes: 0
Received 4 Likes on 4 Posts
Actually it's not...it says the wires/connectors on the series 2 sensors are different and have to be changed to work with the wiring harness on the series 1 car. It doesn't say whether or not the Series 1 Reverse and Neutral Control Switches will physically work and fit in the Series 2 Transmission.
kma5783 is offline  
Old 07-02-2012, 01:05 AM
  #15  
El Jefe
 
yomomspimp06's Avatar
 
Join Date: Mar 2007
Posts: 1,796
Received 4 Likes on 4 Posts
i see what you mean now.
yomomspimp06 is offline  
Old 07-03-2012, 08:10 AM
  #16  
Registered
 
JPotta's Avatar
 
Join Date: May 2006
Posts: 131
Likes: 0
Received 0 Likes on 0 Posts
I don't believe they do, when I swapped the S2 trans into my 05' I had to use the S2 sensors then cut and wire on the plugs from my S1 trans. sensors.
JPotta is offline  
Old 07-03-2012, 08:15 AM
  #17  
Registered
iTrader: (3)
 
Join Date: Apr 2004
Location: macon, georgia
Posts: 10,771
Likes: 0
Received 8 Likes on 8 Posts
true.
Also you may want to do a little more heat shielding as the trans is closer to the exhaust. Some midpipes get pretty close to it.
Another hint--you cant fill this trans from the top, through the shifter hole, like the s1's.
Its one of the best mods I have ever made.
olddragger is offline  
Old 07-03-2012, 04:39 PM
  #18  
Registered
iTrader: (7)
 
kma5783's Avatar
 
Join Date: Nov 2009
Location: Tampa, FL
Posts: 833
Likes: 0
Received 4 Likes on 4 Posts
Originally Posted by JPotta View Post
I don't believe they do, when I swapped the S2 trans into my 05' I had to use the S2 sensors then cut and wire on the plugs from my S1 trans. sensors.
Damn, not what I wanted to hear, Did you actually try to use the Series 1 Sensors first?

Looks like I'll be sourcing the Series 2 Reverse and Neutral Control Switches.

Originally Posted by olddragger View Post
true.
Also you may want to do a little more heat shielding as the trans is closer to the exhaust. Some midpipes get pretty close to it.
Another hint--you cant fill this trans from the top, through the shifter hole, like the s1's.
Its one of the best mods I have ever made.
Thanks for the heads up, I'll see how close it comes to the Midpipe, I'm running the BHR Midpipe.

And Yea I heard you can't fill the Series 2 Trans from the top.

Thanks Guys
kma5783 is offline  
Old 07-03-2012, 08:06 PM
  #19  
El Jefe
 
yomomspimp06's Avatar
 
Join Date: Mar 2007
Posts: 1,796
Received 4 Likes on 4 Posts
I've been following this thread but I can't seem to figure out what's better about the Series2 trans?
yomomspimp06 is offline  
Old 07-03-2012, 09:16 PM
  #20  
Out of NYC
iTrader: (1)
 
nycgps's Avatar
 
Join Date: Jun 2005
Location: Planet Earth
Posts: 19,867
Received 14 Likes on 13 Posts
it can take more beating than the S1 Aisin Transmission, which is infamous for it's "easy to break" factor, even at stock power level.

mine is hold up SO FAR,64K miles, knock knock

I forgot who made the S2 Tranny, was it Mazda?
nycgps is offline  
Old 07-03-2012, 09:51 PM
  #21  
Registered
iTrader: (1)
 
550rwhrex's Avatar
 
Join Date: Feb 2008
Posts: 38
Likes: 0
Received 0 Likes on 0 Posts
If anybody is intrested I have a Series II transmission for sale, with starter and Switches(if i can find them)

PM me for more info
https://www.rx8club.com/se-sale-want...single-235353/
550rwhrex is offline  
Old 09-21-2012, 01:05 PM
  #22  
Registered
 
Join Date: Nov 2007
Location: West Chicago, IL
Posts: 13
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by yomomspimp06 View Post
I've been following this thread but I can't seem to figure out what's better about the Series2 trans?
It's a top load design (i.e. much beefier and resistant to damage).

I did the S1 to S2 trans swap back in January and can say that it is 100% bolt up compatible. The electrical connectors are different, so cut off the connectors from the S1 trans and splice onto the S2 trans. You'll also need the S2 shift lever and bushing as it is different and if you really need to, replace the shifter **** as the shift pattern is different (reverse is left/up instead of right/down). The new Mazda **** was over $100, so I did without -- I know where reverse is ;-)

I ordered a new trans direct from Mazda via the Mazdaspeed Motorsports Racer Support program. Part numbers:

S2 Trans: P6Y1-03-000
S2 Shift Lever: P610-17-510B
S2 Shift Bushing: P611-17-492

And while you have it all apart, consider replacing the clutch...
erikv is offline  
Old 09-21-2012, 01:40 PM
  #23  
El Jefe
 
yomomspimp06's Avatar
 
Join Date: Mar 2007
Posts: 1,796
Received 4 Likes on 4 Posts
thanks
yomomspimp06 is offline  
Old 10-17-2012, 08:13 AM
  #24  
Yank My Wankel
iTrader: (4)
 
Carbon8's Avatar
 
Join Date: Nov 2009
Location: Buffalo, NY
Posts: 2,216
Likes: 0
Received 1 Like on 1 Post
From what I have been reading to me the s2 swap has more drawbacks then it's worth. Here's what I have gathered so far.

Pro's
More durable(thicker casing is all I can see) no one has said what else is more durable about it other than beefier housing
Very easy swap. Just rewire two connectors.

Con's
Heavier than S1
When used with S1 diff gear ratios suffer and drive is actually slower than S1

Sorry if I missed something but what exactly about this transmission is better then?
Carbon8 is offline  
Old 10-17-2012, 09:28 AM
  #25  
Yank My Wankel
iTrader: (4)
 
Carbon8's Avatar
 
Join Date: Nov 2009
Location: Buffalo, NY
Posts: 2,216
Likes: 0
Received 1 Like on 1 Post
Also to anyone who has done this swap did you use a S1 or S2 throughout bearing as they are different?

Last edited by Carbon8; 10-17-2012 at 09:32 AM.
Carbon8 is offline  

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 1 votes, 5.00 average.

Quick Reply: Transmission swap, Series 2 in a Series 1


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.