gonzz

I'm thinking of buying a S4 N/A car that has a S5 TII engine installed. The engine is installed and that's it. Nothing hooked up. I need to know what parts are needed to finish this. Do I buy all s4 parts? Thanks.

13bturbo2

a lot of people...try searching or using the FAQ provided

gonzz

I have searched and you get only half the story in every post. I'm tring to get all the info I need.

Amur_

www.rotaryresurrection.com

In the Tech section there's a write-up (I think.)

gonzz

Thanks...

casio

JUST the engine? they don't run all the same sensors. actually, i don't know what similarities they would have. a few sensors may work...
does it have an S5 wiring harness and ecu?
sensors i can think of off hand that the S5 T2 differs:
pressure/boost sensor
tps
afm

also, i'm not sure if all the other stuff hooks up correctly (ie the S4 ignition; i've never dealt with this).

the list from http://www.rotaryresurrection.com:

Complete turbo engine with intercooler

Left-hand drive spec turbo wiring harness

Turbo ECU (jspec ecu will work, as well as convertible ecu of the same
year range)

*only for 87-88 turbo* knock control box, a small silver box up inside the
passenger kick panel that plugs into the wiring harness. On 89 and later
setups, the ecu handled this function.

turbo boost sensor.

Turbo throttle cable. 87-91 are interchangeable.

Stock turbo fuel pump (87-91 turbo pumps are the same, but the bracket is
not) or upgrade such as walbro 255. A rewire for full voltage from the
fusebox is also recommended, as well as a re-ground in the hatch to bare
metal, a new pickup screen and fuel filter.

Stock turbo intake duct with blow off valve (if not present on engine
already). The 87-88 TID is smaller than the 89-91, but either can be used
in place of the other. Blow off valves are slightly changed but basically
the same.

Stock t2 precat/downpipe and midpipe (bolts to main cat) or
aftermarket/custom equivalent.

T2 hood with scoop (unless you go front mount intercooler from day 1)

Turbo air flow meter (your old nonturbo afm will get you by if you cannot
find one, however the turbo afm is said to be calibrated for slightly
higher air flow on top end so it is something that might matter once you
begin to push the car).

Aftermarket boost gauge is recommended. Even though 89-91 owners can
install the 89-91 turbo gauge cluster and the gauge will work, it is still
not very helpful. 87-88 owners cannot install the stock turbo gauge cluster
and expect it to work, the wiring harness differs in this area.

Aftermarket upgraded clutch and pressureplate. Remember, you're buying
this for a nonturbo, not a turbo, since you're using your old NA drivetrain
still.

Mark'sMazda

yep, i done it.

I used a microtech LT-8 to run the engine, much easier, and WAY better than messing w/stock ecu+piggyback.

gonzz

This is what i got so far... S5 TII JSPEC engine installed. I have a S4 TII wiring harness, S4 TII ECU and S4 TII airflow meter. Can I change the S5 TII throttle body with a S4 TII unit? all other sensors I think are the same. Are they? Another question is the drivetrain. It looks like the guy still has the S4 N/A tranny installed. So that would mean that the flywheel has to be a N/A type right? Can a TII flywheel clear a N/A bellhousing?

casio

if its an NA tranny, it MUST be an NA flywheel (clutch, pressure plate, and i think even starter).

gonzz

Doesn't the flywheel have to match the rotating assy or the engine is not balanced right?

casio

2) Take all the stock engine parts out of a turbo II to put into your car,
just the engine itself and all the electronics that are required to operate
it in stock form, not the turbo drivetrain (for instance if you cannot find
one). This would retain your nonturbo drivetrain. This is not highly
recommended, but can be done successfully depending on the driver. To do
this you would need, at very minimum, an upgraded clutch and pressureplate
to avoid major slippage of the clutch under boost. You just bolt an NA
flywheel onto your new t2 engine and everything bolts together just like it
did.

-- http://www.rotaryresurrection.com/

gonzz

Oh ok. what's the bare minimum items needed for the eng to run? eveything else i will block off..

Rx7 Restorations

we have done several swaps like this and all you will be using is the engine core and the intakes work also just swap out the throttle body use the S4 engine harness and ecu this works when you are finished

gingenhagen

You mean emissions removal?

https://www.rx7club.com/forum/showthread.php?t=112251

Frees up weight, cleans up your engine bay, and much much more, for only $9.99!!!

edit: I can't type

gonzz

Cool thanks "Rx7 Restorations" . How much would a shop charge for this project.. Just wondering.. So i will use the S5 block with intakes, put on a S4 throttle body, use a S4 ecu and harness and block off everthing i can including OMP. Thanks guys for all the help.. I love this forum!!!!