Hi Everyone,
I'm looking to see if anybody can help confirm the part numbers for the jdm 5spd gear set. This is what I have and was wondering
what else I'll need to replace?
Thank you.
-MAIN SHAFT (1ST&2ND) 23210-PR8-020
-4TH GEAR MAIN SHAFT 23451-PR8-010
-5TH GEAR MAIN SHAFT 23581-PR8-020
-1ST GEAR COUNTER SHAFT 23421-PR8-020
-4TH GEAR COUNTER SHAFT 23481-PR8-000
-5TH GEAR COUNTER SHAFT 23461-PR8-000
-3RD GEAR MAINSHAFT 23441-PR8-A02
-3RD GEAR COUNTER SHAFT 23471-PR8-A00
-2ND GEAR COUNTER SHAFT 23431-PR8-A01
-5TH GEAR COUNTER SHAFT 23461-PR8-000
First off, if you're planning on buying all this gearset yourself piece-by-piece you will have a hell of a time, there are several gears that have been backordered for a long time. You're better off finding a vendor with the full gearset to sell you if you don't want to wait months or more.
When you ask what else you'll need to replace, are you rebuilding the transmission yourself or having a professional do it? Are you planning to replace bearings, synchros, and other worn items as well? There are standard wear items plus items that you might need to replace like hubs/sliders and other gears if those are damaged.
You can use
https://honda.epc-data.com/nsx/e-na1/14741/ as a parts reference. It points to a first-gen JDM NA1 NSX so all transmission parts will be of the JDM gearset. If you want the NSX-R final drive the same website has an NSX-R parts list.
You can reference SoS as well
https://www.scienceofspeed.com/inde...ons-gears-lsd/honda-5-spd-short-gear-kit.html.
The JDM gearset only changes gears 2-4 and the mainshaft. Parts ending in -A00, -A01, etc. are Acura/USDM specific, maybe EU as well.
-MAIN SHAFT (1ST&2ND) 23210-PR8-020 - yes,
https://honda.epc-data.com/nsx/e-na1/14746/transmission_mt/26446/?p=1&fromMap=1
-4TH GEAR MAIN SHAFT 23451-PR8-010 - yes,
https://honda.epc-data.com/nsx/e-na1/14741/transmission_mt/26446/?p=3&fromMap=1
-5TH GEAR MAIN SHAFT 23581-PR8-020 - no, this part is the same between all 5-speeds
-1ST GEAR COUNTER SHAFT 23421-PR8-020 - no, this part is the same between all 5-speeds
-4TH GEAR COUNTER SHAFT 23481-PR8-000 - yes,
https://honda.epc-data.com/nsx/e-na1/14741/transmission_mt/26448/?p=6&fromMap=1
-5TH GEAR COUNTER SHAFT 23461-PR8-000 - no, this part is the same between all 5-speeds
-3RD GEAR MAINSHAFT 23441-PR8-A02 - no, -A02 is the US part number. You need 23441-PR8-020,
https://www.amayama.com/en/part/honda/23441pr8020
-3RD GEAR COUNTER SHAFT 23471-PR8-A00 - no, -A00 is the US part number. You need 23471-PR8-000,
https://www.amayama.com/en/part/honda/23471pr8000
-2ND GEAR COUNTER SHAFT 23431-PR8-A01 - no, -A01 is the US part number. You need 23431-PR8-010,
https://www.amayama.com/en/part/honda/23431pr8010
-5TH GEAR COUNTER SHAFT 23461-PR8-000 - you listed this twice, no
