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Discussion Starter #1
Hello all,

I need some help in figuring out the correct parts I need to order for my shop to install the RSX-S/Civic-Si gears 2, 3, 4, and 5 into my 06 TSX.

Here's the parts I could find no problem:

23450-PNS-000 GEAR, MAINSHAFT FOURTH
23580-PNS-010 GEAR, MAINSHAFT FIFTH
23471-PNS-000 GEAR, COUNTERSHAFT THIRD
23481-PNS-000 GEAR, COUNTERSHAFT FOURTH
23461-PNS-000 GEAR, COUNTERSHAFT FIFTH

I assume I need to buy a mainshaft gear and a countershaft gear for each shifter gear that I am swapping out. In my case 4 x 2 = 8, so where's the other 3 parts I need? All I could find was this:

23440-PNS-000 GEAR
23431-PNS-000 GEAR, COUNTER SECOND
23432-PNS-315 GEAR SET, SECOND
23444-PNS-306 GEAR SET, THIRD

Do the "GEAR SET" include the countershaft AND the mainshaft gears? They are 4x the price of the 5 gears I listed at the top of my post.

Also, I will be swapping these in, along with a Wavetrac LSD, to a stock TSX with 20k miles. What other wear-able parts should I go ahead and replace when the tranny is opened up? Not worth it to replace synchros given the brief period of use?

Also, any recommendations between the Yellr speedo fix box and the Dakota one?

****Thank for you for any help/advice you can provide!******
 

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what are u doing wit ur tsx gears i will take third off ur hands. let me know? when they say gearset means that it comes wit sychro. if u look at the picture u can tell. u going to need a mainshaft cause the mainshaft comes wit second gear cast on to it. these are the part numbers u going to need.
Counter shaft
2nd=23432-PNS-315
3rd=23471-PNS-000
4th=23481-PNS-000
5th=23461-PNS-000

Mainshaft
2nd which is the mainshaft=23210-PNS-010
3rd=23444-PNS-316
4th=23450-PNS-000
5th=23580-PNS-010
 

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Discussion Starter #4
Thanks eg6k! I will let you know once the project is complete and its time to sell off the old parts. Any advice on other wearable parts to replace while the tranny is open? How about the speedo boxes (Dakota and Yellr) - anyone have experience with either?

I am under the impression that I will need the speedo fix due to the speed being read from the 3rd gear. Is that correct? Also, I think I read the LSD affects the speedo reading too. Any truth to that?

A Mack,
I am super pumped about this upcoming swap. I will be sure to post results/lessons learned afterwards.

Thanks for the help!!
 

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Discussion Starter #5
Are these worthwhile to change out?
Ball bearing 91001-PPP-005 - $26.53
Needle bearing 91003-PPP-004 - $30.20
2 Diff bearings 91005-PPS-003 - $29.85x2

Also, when I install the LSD does that need new bearings too?
 

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you can replace just the counter 2nd because the syncro is the same but 4th gear is not so your going to have to buy the 3rd gear syncro set, and depending on the year of your car will depend on what 5th you need to buy, if you hav an 04tsx you need the 23580-PNS-000 if you have a 05+ you need the 23580-PNS-010. but other then that you can just get the other gears you need. msg me on aim if you want more help
 

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I'm looking into doing this as well for my 06 TSX.

Many have said that you can find a 06-11 SI transmission and transfer the guys of that into the TSX case. The K20 tranny case will not bolt up to the subframe but if you take out all of the internals, it will work!

I'm trying to see if I need any other parts to make this all work... Same project as yours:

Civic Si gears and LSD into TSX tranny

Has anyone else done this? What
 

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I'm looking into doing this as well for my 06 TSX.

Many have said that you can find a 06-11 SI transmission and transfer the guys of that into the TSX case. The K20 tranny case will not bolt up to the subframe but if you take out all of the internals, it will work!

I'm trying to see if I need any other parts to make this all work... Same project as yours:

Civic Si gears and LSD into TSX tranny

Has anyone else done this? What
I've done this. Its a way better ratio than the stock tsx gearing, especially 2nd gear. I went with MFactory LSD tho.
 
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