Hi im a rather new to your site but have beenreading alot of posts and gathering alot of info from everyones posts. Im have also been a member of DSMtuners for a while so please forgive me if i break any of your forum rules. I just wanted to run this setup im gonna be purchasing in the spring by you guys, since you all seem to be the source to go to when it comes to turboing our 420A. Please be critical as i do want to do this correctly and have found that i can save about 1000 buy piecing a kit together. Suggestions are welcomed as is criticism. Id also like to know of safe boost levels after my break in period as well as an estimated WHP i will be making.

Turbo: T3 50 trim .48
Custom Manifold
Ebay FMIC
Custom IC Piping
3in exhaust
8.6 pistons
forged rods
oil feed and return lines
fuel feed and return lines
Walbro 255lph HP
Unsure on injector size i shoudl be running???
1gBOV
Tial Wastegate
Stage 3 clutch
Custom DP
FPR
Necessary gauges: Boost, EGT, Fuel Pres, Oil Pres
Possibly a wideband.
Turbo Timer
Manual Boost Controller
Lines for BC, BOV, and WG
Necessary flanges

This is my current mod list that will apply when the turbo is on:
AFX UDP, Screamin demon coil, 8mm plug wires, cuttin my current CAI as turbo intake

Thanks,

Justin

Injector size really depends on how much boost you plan to run...typically you can run stock injectors between 5-7 psi safely with the walbro and SFMU. If you are wanting more than that, you need to go larger. Most people start out with 30lb injectors or higher depending on what your goals are for boost.

For your turbo, I would suggest a nice .60 or better compressor(cold) side. A .48 will not be very efficent over 10-12 psi. As for the turbine side, its really up to you, the smaller the AR on it the quicker it will spool, although you will not have as much top end.

Your going to need a SFMU to regulate your fuel requirements if you decide to go that route. Do a search for megasquirt as an alternitive to your fuel needs. Seems to be some great success stories going around.

Does the center section of the turbo have coolant lines? If so, that's another area that you'll have to consider. But, if it does, a TT is not as necessary since the oil isn't given as much cooling responsibilities then.

Looks like you're off to a good start.

Brian


Oh! What year? (nm, just read your name--97) You have to do something about the MAP sensor. In 96-99, they'll throw a CEL, cut fuel, timing...etc if they see boost. 95 guys are lucky :) Get a missing link (vacuum bleed) or a voltage clamp (I posted the site around here somewhere on how to make one--dennis doza--type that into google and something will come up.) You'll need that mod to run it correctly.

OK thanks guys, i have checked on the megasquirt as well forgot to mention that. Ill check on the turbo as well. Although what size are 30lb injectors in terms of CCs. And what if i run some 270cc or maybe some 3 something injectors, how much boost and HP can i expect to get safely, and tuned.

Originally posted by White97rs
what size are 30lb injectors in terms of CCs. And what if i run some 270cc or maybe some 3 something injectors, how much boost and HP can i expect to get safely, and tuned.

30lb = 330cc.
as far as how much boost/hp you can do, it all depends on what your final set up is and what your goals are. Do some more searching and research and make your own determination. Also check this link out,
http://www.geocities.com/vttalon/tech.html

Originally posted by hunntyr

Originally posted by White97rs what size are 30lb injectors in terms of CCs. And what if i run some 270cc or maybe some 3 something injectors, how much boost and HP can i expect to get safely, and tuned.

30lb = 330cc. as far as how much boost/hp you can do, it all depends on what your final set up is and what your goals are. Do some more searching and research and make your own determination. Also check this link out, http://www.geocities.com/vttalon/tech.html

arent 30lbs = 315cc? i thought i read that the equation is lbs x 10.5... was re-reading Maximum Boost today.

yeah, i thought 30#'s were 315cc's as well. not like it really matters much in the contex of this post though.

Originally posted by ryansiefring
yeah, i thought 30#'s were 315cc's as well. not like it really matters much in the contex of this post though.

it just makes me feel smart :+