So, i've some parts here and i'm wondering if this will work...

S5 block - NA Rotors - S4 Turbo - UIM, LIM, LIMA etc. from S4 - S4 body - s4 Ecu - S4 harness and a Apexi SAFC II...

i will rebuild the S5 block, port the wastegate, port the turbine inlet ports and do a streetport...

will this setup work "without" problems?

 

"without problems" is questionable. Technically, it should start, but i'm not certain how safe it would be to run the high comp motor on the stock ECU.

Also, is that the T2 ECU or the NA? If it's NA i certainly wouldn't do it.

 

TII S4 Ecu and harness

TPS, AFM, all sensor etc. from S4... only the smallblock from S5 with high.comp rotors @ portet s4 turbo

 

If the S5 block is N/A you'll have some of the problems NA-Turbo projects have in that regard. It looks like all the other stuff would be S4 turbo? (all the s4 parts that you specify, you say are turbo, no S5 part is identified as N/A or Turbo, and the rotors aren't specified as S4 or S5)

 

One other thing you will need to change is the front cover. The S4 front cover is different then the S5 and are not compatible with each other. You can swap the S4 onto the S5 block easily though.

 

ok guys so, let me beginn again

S5 200hp Block
S4 NA Rotors
S4 181hp Turbo
S4 181hp LIM, UIM, AFM, body, Ecu, Harness, Sensors, power steering, Airpump etc.
S4 181hp Ecu
Apexi SAFCII

 

You'll need the S4 front cover, front balance and flywheel. Everything else should bolt on.
S4 NA balance!

 

I have a S4 NA balance...

would a S4 NA flywheel + S4 NA frontcover work? or only turbo?

 

You would probably need to use the Turbo front cover since you're going to put a turbo on the car. The Turbo front cover has an oil return built into it, but again that's up to you.

You can use a S4 NA flywheel, but you'll need to use the NA transmission which may or may not hold up under the HP.

 

i have to use a S4 TurboII Transmission... so.... ???
S4 Turbo Front cover won't be a problem

 

If you're using a T2 tranny then you'll have to use the T2 flywheel, no exceptions!

 

and how i can use a T2 flywheel on this engine? :/

is it possible with another aftermarket flywheel?

 

The flywheels are interchangeable. However, the NA flywheel will not fit the T2 tranny. You must match the flywheel to the tranny!

Check out the tech section of http://www.rotaryresurrection.com

 

soooo, now, is this plan complete?

S5 Turbo Housings
S4 NA Rotors
S4 Turbo Frontcover
S4 NA counterwheight
S4 Turbo Flywheel
S4 Turbo Transmission
S4 Turbo + manifold
S4 Turbo UIM, LIM
S4 Turbo Body
S4 Turbo Harness
S4 Turbo ECU
Apexi SAFC II

so, a few questions

1.) which output shaft should i use? S4 NA, s4 Turbo or s5 turbo?
2.) will i ran to lean with the stock fuel system or anything like that? (i will get a wideband lambda to tune the car with my safc right, but the first few months i will drive COMPLETELY stock
3.) which other troubles can i get with that engine?
4.) which rebuild kit is the best way to go with that setup? which apex seals, Water o rings etc. ?

and now, the main question lol

what do you think about the power output? this engine with 3" downpipe, 3 " Catback, stock cat (so no fuelcut i hope), streetport, wastegateport, turbo inlet runner portmatching, apexi SAFC II (tuned with a wideband) and a boost controller to prevent overboost the first miles...

thx 4 your great help

 

1) You will have to use a turbo output shaft and differential, unless you want to make a custome drive shaft. It doesn't matter if it's S4 or S5
2) I don't know, but with NA rotors i'd be more inclined to run with larger injectors and a standalone ECU.
3) Since you're running higher comp rotors you're more likely to detonate.
4) I'm going to be building a similar engine in the spring and will be using RA apex seals, everything else will be OEM. I'd check out dDubs thread on his build, or Aaron Cake. (do a search)

I'm not into guessing power, you'll certainly get more with a standalone.

 

make sure you port the LIM to fit the 5th and 6th ports; if you're using the stock NA fuel system then you definately have to go with bigger injectors. 450cc injectors will make your car run lean and you dont want that to happen. also get a bigger fuel pump like a walbro 255 l/h; with the turbo II ECU you may just get the engine to run but it is best to get a standalone ems and with that you don't really need the safc. as for reebuild kits everyone has their own opinions and it's on forum so you can search for it. as for me i'm gonna use atkins corner seal springs and seals but everything else will be oem.

 

i don't use the NA fuel system! i use the S4 TurboII Fuelsystem
Fuelpump is also from a S4 TurboII

i only want to build a good runing engine with some power out of the box... my goal is 300hp in the future, i don't need more here in Austria

 

for a 300hp it's best u use the standalone but i guess the tII fuel system should be ok. do you have all the sensors for the ecu?

 

jep, should have all the stuff here

hm, i have to think that project over... because its also my first rebuild

 

The T2 ECU with SAFC-II will handle 300hp without too many problems. There's a guy in CO with that setup, but he has 4 720cc injectors and says they're running maxed out. With a standalone it might be different but i'm not sure.

I don't think 4 550s will get you to 300hp though.

 

nono, you've misunderstanded me...

i don't want to hit 300HP with the stuff above...

i've thought abaout an rtek 1.7 with 2x550cc + 2x720cc, warlboro fuelpump, greddy intercooler ...

 

you may wanna go 720cc's all around to prevent detonation. it's better to run a lil rich than a lil lean

 

i will cruise with stock boost levels, stock timing etc.

afaik the stock AFM is very rich on the s4's, so i think i don't have to bother about detonation!? or is the compression ratio that high?

later, when i got my wideband lambda and boost controller, everything will get tuned the right way

later, when i get the RTEK i think i'm on the very safe site...

secondarys @ 3200rpm and timing per boost settings