how to tell a 87-88 turbo motor from a 89-91?
 

hey guys

i need some helped i tried searching could not find the info. I am going to a japanese auto importer tonight ot look at some motors. I want the 89-91 motor. How can i tell them apart fromt he earlier 87-88 motors?
thanks alot

the s5 has a electric OMP,on the bottom of the s4 (by the oil pan) there some actuator that the s5 doesnt have,on the side of the motor the s4 has 4 electric solenoid plugs, s5 has 3

that should be good enough,i had to actually do the samething but over the phone so it sucked even more

and if your looking for a s5 tranny(which i believe is better than a s4)the pan on the bottom has 12mm on the s5, 10mm on the s4


good luck

Look at the UIM.

What pan is this that you speak of? Also, the S4 N/A differs from its S5 sibling in the placement and mounting of the rear transmission crossmember.

thanks, but what the hell is an OMP lol
I am new to this rotary stuff :D

don;t suppose you have any pics of this stuff?

The OMP or more correctly labeled by the FSM - MOP is an oil pump that injects small amounts of motor oil into the rotor chambers. This serves to keep the apex seals lubricated and aids in the compression.

ahhh cool thanks.

THe motor is not going into an Rx-7. Do the older ones have less electronics that the newer ones, or are they pretty much the same?
Is it just the compressiont hat make up the differnce in HP (probably not). But is the turbo btter, intercooler better, oiling system better or jsut different?

if you look at the bottom of the tranny thers some kind of pan...on the turbo models...sorry dont know about n/a

Good job on the triple post. There is no pan that I know of on the N/A transmissions. I do not recall one on a turbo transmission either, but I might be wrong. It has been a while since I saw a turbo transmission.

knock sensor on iron on S4 13BT, in rotorhousing on S5 13BT

it looks like a metal plate, on the bottom

thanks :D and sorry about that :)

i went to go check out the motor but they are in the bottom of the stack :( gotta wait a couple more days till they get them out.
$1200 CDN for complete motor/tranny ECU
Or he will order me a front clip and it will be here in 30days for $1700-$1900