ok so like i have said before i have got a new rx7(well new to me)87 turboII the guy told me it had a new motor in it. but how do i know if its an s5 or if it has s5 clips or s4?

 

An S4 TPS has one plunger/piston while an S5 has two.

 

do you have any pictures?i dont really know where that is.sorry

 

The BAC is on the passenger side on an S5 . The opposite is true for an S4.

The picture in the link is an S5
http://www.fc3spro.com/TECH/HOWTO/TPS/tps1.jpg

 

https://www.rx7club.com/new-member-rx-7-technical-256/

or use SEARCH next time. every single thread you have posted has been covered before at least once.

 

lol so this is the problem now that i have. the whole wiring harness in the car has been cut up and taken out from previous owner. is there any other way to tell?

 

S5 TII injector connectors are round, S4 are square.

The S5 TII engine does not have a twin scroll actuator on the turbo manifold. The TII wastegate actuator rod is kind of bent while the S4 is square.

S5 engines have much thicker castings and a support crossmember at the oil filter pedestal area, while S4 engines usually don't.

There are many other differences. Check the FAQ for detailed information on how to tell S4 and S5 engines apart.

 

fan clutches are different.
different knock sensor locations.
the charge pipe is plastic on S5 and metal on S4
plug location on the housings
tps
TB inlet pipe.
alternator
water pumps
turbo wastegate
turbo manifolds
OMP
injectors
fuel rails
fuel pressure regulator
front cover
intake manis,they look similar but they are not the same
bac
and a lot more