s21 b16 trans

vtecveins · 09-21-2010, 08:26 PM

ok guys im looking for some info on my trans!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i recently swapped out the motor in my 94 canadian si coupe(d16z6)
for a b20vtec, and it has a rhd eg6 b16 trans which is really really close geared!!!!!!!
my question is why do people say that the usdm em1 trans are the same gear ratio as my s21?????????
i had an em1 and driving 60mph means 3000rpm
in my ej1 driving 60mph means 3500rpm
whats the difference??????????????????????????????????

Deetz · 09-21-2010, 08:46 PM

Same gearing, just an older version tranny, thats all

S4C/Y21 (USDM B16A2, B16A3; JDM SiR2, JDM SiR2 w/LSD)____3.230___2.105___ 1.458____1.107____0.848____3.000____4.400
Y80/S80 (JDM B16B w/LSD; JDM B18C 96-spec R w/LSD)_______3.230___2.105___ 1.458____1.107____0.848____3.000____4.400

I have an extra one lying around myself, along with the oem LSD option

09-21-2010, 08:26 PM	#1
vtecveins Honda-Tech Member Garage is empty, add now Join Date: Feb 2010 Posts: 24 iTrader Rating: (0)	s21 b16 trans ok guys im looking for some info on my trans!!!!!!!!!!!!!!!!!!!!!!!!!!!!! i recently swapped out the motor in my 94 canadian si coupe(d16z6) for a b20vtec, and it has a rhd eg6 b16 trans which is really really close geared!!!!!!! my question is why do people say that the usdm em1 trans are the same gear ratio as my s21????????? i had an em1 and driving 60mph means 3000rpm in my ej1 driving 60mph means 3500rpm whats the difference??????????????????????????????????

09-21-2010, 08:46 PM	#2
Deetz Honda-Tech Member 2000 Honda Civic My Garage Join Date: Sep 2003 Location: Calgary, AB, Canada Posts: 7,301 iTrader Rating: (0)	Re: s21 b16 trans Same gearing, just an older version tranny, thats all S4C/Y21 (USDM B16A2, B16A3; JDM SiR2, JDM SiR2 w/LSD)____3.230___2.105___ 1.458____1.107____0.848____3.000____4.400 Y80/S80 (JDM B16B w/LSD; JDM B18C 96-spec R w/LSD)_______3.230___2.105___ 1.458____1.107____0.848____3.000____4.400 I have an extra one lying around myself, along with the oem LSD option __________________ 1989 CRX SI http://honda-tech.com/showthread.php...ighlight=years 2000 EM1- Vogue Silver- build- http://honda-tech.com/showthread.php?t=2571881

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s21 b16 trans