As the title states. I have a tii trans in my garage and I need to know if its s4 or s5. Every tii trans I have had has looked the same but they were all in swapped cars so I cant be sure of the year. Thanks in advance.

 

s4 has the conventional mounting boss for a "block" rubber mount common to most earlier mazdas

s5 uses a mounting boss that has a V edged profile, and uses a multi rubber V mount
( there is also extra room inside the rear section to hide a balance weight )

s5 also has syncro 1st./ rev , the s4 will clunk !

 

Take a look at the metal bracket that the mounts bolt to. S4 is 1 bolt on each side, S5 2 bolts.

 

S5 trans has more "ribs" on the case, or at least mine does. Something like 10 vertical ribs vs. 6 or so on my S4 trans.

 

Thanks a ton.

 

Completely false.

First of all, the synchro sharing between the gears are 1-2, 3-4, and 5-R.
Secondly, both the S4's and S5's are synchronized for all gears, including reverse. Mazda part numbers for the blocking rings are: first gear- M502-17-265A, Reverse- R503-17-265A.

 

any pics to see the difference between the s4 and s5 trans?

 

I also believe the reverse light switches are different from a s4 to a s5.....

 

yea the plugs for the reverse and 5th/neutral are different. i just did a S5 turbo trans swap and i swapped over the S4 stuff, just so everyone knows it does fit and works fine.

 

so thats where the problem lies when you use an s5 t2 trans in an s4 and you have no freaking reverse lights lol

 

It's not a problem at all. I have a Jspec S5 transmission in my S4, and I have reverse lights. The only part I'm missing is the 5th gear switch, which is normally part of the rev switch on US cars. Japanese cars don't use it, so the rev switch just has 2 wires instead of 4. I have a spare Jspec S4 transmission too, and it's the exact same way. No 5th/Rev switch, just a rev switch.

The 5th gear switch is only for the shift up light and triggering the split air solenoid on US ACVs. My shift up light comes on in 5th gear, but no other issues, haha.

 

well my 5th gear light was alwasy on too lol