my 5SFTE turbo project, 300+whp PG 23!!!!!!! Options

[presure2]

hey guys, since i've been fielding alot of questions about turboing the 5s, and most of the links in the 5sfte sticky are dead, i figured i start a thread about the buildup of my kit, and try to include as many details as possible, so everyone can learn a little more about what exactly goes into a setup like this. ill keep updating the threads and adding pics and stuff as i upload more ect..
im not gonna get into the whole why not swap a 3s instead debate here, thats a dead issue as far as im concerned. (not that i think swapping is a bad idea, just not for me.)
so, ill start off by saying the single most important thing you can do if you wanna turbo your 5s is RESEARCH! take your time, learn about the diffrent systems that all work together to make a good kit work. go to www.howstuffworks.com and find out how EVERYTHING works, it'll make understanding the hows and whys of everything so much easier. i've been reserching about this for 2+yrs and i STILL learn new things everyday.
#2 is DONT BE CHEAP...can you do it cheap? yea..will it last? prolly not.
thats gotta be the SINGLE biggest mistake i see EVERYONE make. cheap out on all the little stuff, and it WILL come back to haunt you in the end
that said, i decided i wanted to turbo my 5s. lol
so, off on the hunt i went...parts lists, install sites, the burien kit...i searched it ALLLLLL...for MONTHS!! talking to people, looking at sites, printing info..basicly what the old timers call "goin to the woodshed"
then, i started looking for parts:
3s exhaust manifold, ct-26 turbo, oil hard lines, elbow and primary cat (also known as a downpipe), if your not planning on getting a aftermarket downpipe. also the oil pan and 2bar map sensor.
your gonna want these off of a 2nd gen 3sgte from a 90-93 alltrac or mr2T, and are pretty easy finds over on www.alltrac.net and or www.mr2oc.com. if your not a member of these 2 sites, YOU SHOULD BE!!! theres a wealth of info on these to sites, and while alot of it may not be 5sfte spacific, its still VERY good info, especially the 90-99 mr2/ 3sgte forum.
next was injectors. there is ALOT of confusion here, where to find them, what they look like, what size are they really ect.
what we're looking for is the MKIII N/A supra injectors. not turbo injectors, not alltrac injectors, N/A MKIII supra. theyre a lime green color, and 315cc. just to clear up another point of confusion, they do NOT become bigger injectors in our cars. the fuel pressure between the n/a supra and the 5s is the SAME.
there is a pic in the 5sfte sticky of what they look like and the flow tests to show it.
i found mine on ebay, but you can sometimes find them on some of the boards ive mentioned, and the supraforums.
also, i really reccomend having the injectors cleaned and balanced once you get them, if you look closley at the printout for my injectors in the sticky from when i had them cleaned and balanced, youll see why i say this.
one of my injectors wasnt even spraying, it was DRIPPING before it was cleaned. i'd HATE to see what would happen if i'd installed that thing in there and cranked up the boost!
so yea, i really cant stress enough, HAVE YOUR INJECTORS CLEANED BEFORE YOU INSTALL THEM!!! www.rceng.com did an excelent job on mine for about 100$, and ive heard thru the mr2 board that www.witchhunter.com also does a very good job, and are only 12$ per injector.

EDIT!!! 315CC injectors are TOO SMALL for use in a turbo 5sfe. 460cc rx7 injectors are a drop in replacement and are discribed later in this post!!!


you'll also need to upgrade your fuel pump, use the 255lph walboro supra pump. you can get it for under 100 usually on ebay., and pretty much bolts in.
next for me was the intercooler..now contrary to popular belief, bigger IS NOT always better when it comes to intercoolers.
you wanna choose the smallest intercooler to fit your needs, with a LITTLE room for growth. for instance, in my case, my goal is around 190-200whp for now, so i chose a intercooler thats 26x6x3 overall length, with endtanks. its good for up to 300hp. why not somthing bigger? well, the #1 reason is theres no NEED for anything bigger. lol the bigger you go, the more pressure drop you have, and thats not what we want. with all the piping invloved for a 5sfte FMIC, the last then we want is some big honking core, sucking up 2-3 or more psi of the boost we wanna get to our engines.
for the piping, again, bigger is NOT always better. 2" or 2.25 " is more than sufficent for us. you'll need to buy pre-bent lengths and cut and fit them for your particular setup. jcwhitney is cheap for aluminized steel, or burns stainless if you want stainless pipes.
then the noise maker of the bunch , the BOV...your choice here, i chose the HKS SSQV... got it from ebay for 190+ shipping i think it was..just make sure your buying the real thing if its from ebay, theres alot of shady copys floating around. youll also need a mounting flange to have welded to your intercooler piping, make sure you get the correct size and material to match your piping.
TOO BE CONTINUED...

This post has been edited by presure2: Nov 11, 2007 - 10:53 AM

[presure2]

naa, i just feel like i could have used the extra money from that somewhere else..
the ct-27 works great for me, and has given me excellent results, but over the past yr + ive come to realize that the biggest restriction for us is the ecu.
with the very small amount of adjustent the SAFCII gives us, it really doesnt do what we need it to.
IMO one of the big issues with the 5sfTe is timing, and some form of control with it.
the BTM is one way of doing that, but, its VERY crude.
i could never get the car to feel better than what it did when i had it turned to 0, so i took mine out.
looking back, at going over my dyno charts, (man, how a year of studying them things can help!) its pretty easy to see how timing is being pulled right @ 4450rpm.
IMO the reason it does that is because of the stock ECU timing maps. an NA car can tolorate more timing than a turbo car.
so, the more boost you run, the worse it is for the ecu, cause as boost builds, the stock ecu is adding more timing than what should be there for a boosted motor. which causes it to knock harder, pulling more timing.
IMO i verifyed this when i run on the dyno with the race fuel mix.
i've learned from researching on mr2oc that one of the benifits of race fuel, is that it allows you to run more timing, as it is less prone to detonation.
with that in mind, that was one of the reasons for trying it.
and, when i did, there was a VERY pronounced improvment in the car.
it no longer pulled timing at 4450rpm like it does on pump fuel at all.
if you look thru my dyno sheets i have posted, you can see how much smoother the 50/50 race fuel/ 93 pump runs are.
IMO the SAFC just makes the problem worse because of the way it "tricks" the ecu into thinking there is more or less airflow, and because of that, it adjusts timing at the same time, and we really dont know how much it does.
the manage ultimate does things much diffrently.
it ties directly into your injector wiring, to control injector opening times, and ties into the crank and cam signals in the distributor for timing control.
that will be a MUCH better way of controlling things, IMO.
i'd hoped to have it by now, but $$ has been short this summer.
hopfully over the next couple months, ill be able to get that, and install it.
once i do, it should REALLY open up things for me, and in turn, all of you
i finally picked up a wideband a couple weeks ago, and that is REALLY helping to paint a better picture for me of what is going on, and i think the combination of that and the emanage ultimate will go a long way toward getting a much better tune on the 5SFTE.