My car is finally about ready to accept the turbo high output motor. What started off as a cheap junkyard set-up has turned into a major build that has addressed every aspect of the tuning process. Just this past weekend I epgrgaded my brakes and replaced a lot of my suspension parts so that I can finally feel safe when I run OBD1 and not remove the speed limiter on it.
For fuel delivery, a stock pump (no 1/4 tank fuel cut) feeds into a T. Each line off the T feeds into an in-line fuel pump (making three fuel pumps total) and then into a fuel rail with adjustable fuel pressure regulators. Both of the fuel rails have four 35lb in jectors on them and are both set at around the stock fuel pressure. An under-hood fuel pressure gauge monitors the stock rail and an in-dash monitors the additional rail. Both rails feeed into the same return line back into the tank. Controlling the additional injetors is a Greddy rebic III additional injector controller with a single injector driver and a custom harness. A rebic III simmulator also allows for more tuning options. The rebic unit has a 2 bar map sensor with it. The stock map sensor is blocked off with a high-flowing check valve.
Taking care of the ignition system is a programmable MSD DIS-2 ignition. This feeds into a stock 2.4 ignition module and then into a modified 2.2ohv ignition module (stripped) which I have used to mount new GP sorensen coils to. The coils have 8.8mm accel 300+ wires running off of them into NGK TR6 spark plugs. There are heat shielded poots around the base of the wires in between the cam towers. The MSD is progrrammable via a laptop in my car and has a 3-bar map sensor to use boost retard.
The turbo is a custom turbo I built using Garrett, Masterpower and Turbonetics components.
compressor: .60 a/r, between v and s trim, 3"inlet, 2" outlet
turbine: .68 a/r, p trim, T4 inlet, 3" v-band outlet
center: volove/garrete TBO3 center, turbonetics brass bearings, oil/water cooled
The set-up has a top mount intercooler with water misting and a fan under it which brings air down over it. There is a large scoop over the intercooler as well. The interrcooler bolts right to the throttle body and then 2.25" charge pipes run over the fuel lines and into the turbo (2 ft of charge pipes.) A turbo XS BOV sits right under the scoop pointing out... LOUD..... Everything in my set-up is heat shielded. A 3" downpipe leads into 3" exhaust and is heat wrapped all the way until it is under the car. EGT and O2 bungs are welded into the downpipe. The manifold is an all stainless exploited piece with an external 38mm wastegate.
Other accessoried include a greddy turbo timer, an HKS filter right on the turbo, all new sensors, all braided lines, ect....
I am aiming to be able to hit 400whp with this little H/O motor once I stick the W41 cams and computer on it.
I will be posting pictures as things start to come together durring the build this next coming few weeks.
Cardomain|
Myspace
w-41 cams may have a little to agressive valve overlap for boost., from what i rember HO cams are a little choppy too, but youll see soon enuf.
chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
yes..... I agree 100% that the overlap is too aggressive for boost. I am having a friend machine me some adjsutable cam gears to install with the W41 cams and computer. For now I am going to suffer with the H/O overlap. It shouldn't be that bad since I am running relatively low boost with a high CFM turbo. I just don't want theoverlap to throw off my a/f ratio readings.
Cardomain|
Myspace
sounds like an awesome setup.....all i can say is i cant wait for the pictures and dyno slips
_________________________________________
450WHP Turbo Ecotec swap in the works...
