Differece between jspec & usspec fd3s tranny

justturbo2 · 03-08-2010, 09:12 PM

Is there any diffrence between the jspec tranny and usspec in the 3 gen? It looks like just the 5th gear ratio is different. Is there anything else? case, mounting bolts gearing? thanks Justin

dudemaaan · 03-09-2010, 12:23 PM

I don't think all of them have a different 5th gear ratio. I can't think of any subtle differences but it will bolt up and install just fine

speedjunkie · 03-10-2010, 03:35 PM

My JDM tranny definitely has a different 5th gear than the USDM. I tested it about 4.5 years ago when I put it in...I don't remember what speed I tested at or the RPMs, but I do remember at the same speed and in 5th gear the JDM tranny was about 500 RPMs higher than the USDM.

Other than that I didn't notice any differences. Same electrical connections, bolts up exactly the same...

Whizbang · 04-05-2010, 11:40 PM

only difference should be the fifth gear.

03-08-2010, 09:12 PM	#1
justturbo2 The Newbie Join Date: Mar 2008 Posts: 13 Rep Power: 0	Differece between jspec & usspec fd3s tranny Is there any diffrence between the jspec tranny and usspec in the 3 gen? It looks like just the 5th gear ratio is different. Is there anything else? case, mounting bolts gearing? thanks Justin

03-09-2010, 12:23 PM	#2
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 17	I don't think all of them have a different 5th gear ratio. I can't think of any subtle differences but it will bolt up and install just fine __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

04-05-2010, 11:40 PM	#4
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	only difference should be the fifth gear. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook

03-10-2010, 03:35 PM	#3
speedjunkie RCC Loves Me Not You Join Date: Mar 2008 Location: Colorado Springs, CO Posts: 2,089 Rep Power: 20	My JDM tranny definitely has a different 5th gear than the USDM. I tested it about 4.5 years ago when I put it in...I don't remember what speed I tested at or the RPMs, but I do remember at the same speed and in 5th gear the JDM tranny was about 500 RPMs higher than the USDM. Other than that I didn't notice any differences. Same electrical connections, bolts up exactly the same...