mitsu prolly going south, which turbo?

[janus]

hey folks,

now that i'm done putting together my 2.5 T1, i notice a loud wheeing noise from the mitsu once i punch it. i broke my v-band clamp bolt when i had the head out and the turbo apart, so i substituted it with a different bolt. could the exhaust side compressor wheel be grinding because it's not fastened enough?
how much do you normally fasten the bolt of that clamp? how much space remains there between the bolt nut and the clamp?

if not, what could happen if the ex wheel breaks or if it's abrased slowly? any danger for other components? if just the mitsu is gonna blow, i dont care much just if possible to fix it, i would do it b/c i dont wanna rip that head off again, i just spent so much time putting it back on :/

in this case, i have another Q for you:
this 2.5l TI is a daily driver, so i would like to keep some fuel economy. i love even tq, racing it around town rarely from time to time is an issue, though.
i would plan on a ported ex manifold and the stock rad/IC from AustrianDodge and get a rebuilt T3 from TU or FWD-P - good choice? what else would i have to upgrade, especially when i get a MBC (mby multistage?). i'm not looking for more than the 14.7 psi, that's the absolute max i'm gonna run.
in case i get another ex manifold i will also get an egt gauge installed. a/f gauge already on its way.

this thread's topic is not too specific, more a general thoughts collection what i can do about my current issue, and also what to buy in case i ditch the mitsu.
thanks for any comments
greetz

[tryingbe]

Just a stock TII Garrett would be fine for you.

[crazymadbastard]

The head RR the second time will go much faster. Just check the mitsu where the turbo chra meets the exhaust housing and make sure it is flush all the way around, there is also an internal bearing shield that can get in the way.

Get a garrett for sure it will meet your goals and still have a bit more left. There are also things that you want to get like a ported exhaust manifold-(I did mine- not recommended) arp hardwareand maintanance items like new belts and timing tensioner.
A cal is a good way to go.

[janus]

thanks for your ideas.
a TII would be which exact turbo, a T3? dont have too much of an idea about snails yet also, i would need another ex manifold right? i suppose all garretts have a common flange, but different from mitsu.
also, which trim should i get for the T3 for my application (see first post).
i will also most likely not be able to get a useful core, so i could basically choose any T3 (and trim) from chris to get a rebuilt one, granted i pay the 150 core charge.

oh, and on the cal: i only saw these staged cals where charge air temp, +20 inj and all that was needed. i hate to say but i kinda dislike the way you guys use proms, is nobody of you scanning and, based on that, designing their own specific prom for the application? or are the cals sold at chris or cindy that good and universal?

[tryingbe]

TII Garrett = .42 housing with T3 50trim wheel, T3 Stage 1 turbine wheel and .48 turbine housing.

It is a direct bolt-on to your car, no need to change the exhaust manifold. Though you'll be needing some new oil and coolant lines.

If you want your own calibration, look into MoparChEM.com

I am currently using 86lbs injectors with my calibration.

[janus]

ok let me get this straight:
the .42 is the exhaust housing trim right?
T3 50 trim wheel - exhaust side
T3 stage 1 turbine wheel - intake/compressor side
.48 compressor housing
got it right?

how much boost would i run max, provided i have the stock IC and enough fuel. stock exhaust for now, but might change soon, dunno yet.
virtually, i would have a 2.5 TII then (remember i'll also get the rad/IC)?
and i could keep my mitsu manifold? i ported it myself, so would be cool to see how it'll run

thx

p.s.:
oh and for the moparchem, i already found this site some days ago but i can't find anything for the 92 models and also moparchem didn't seem very popular at all.
well, i still have a zeitronix zt-2 wideband system and a pda for pocketlogging kicking around, could i use this for scanning? best thing would be to put it in the stock location of the nb o2 and feed the wb o2 signal to the ecm, not sure though if this is possible. is there any other obd or aldl port on these cars?

[speeduphoria]

Quote:

Originally Posted by janus ok let me get this straight: the .42 is the exhaust housing trim right? T3 50 trim wheel - exhaust side T3 stage 1 turbine wheel - intake/compressor side .48 compressor housing got it right?

Not quite

the "stage" wheels are exhaust/turbine wheels. The "trim" wheels are the compressor/intake wheels
so its(cold side 1st then hotside)

.42A/R compressor housing(intake/cold side)
T3 50 trim compressor wheel(intake/cold side)

.48A/R turbine housing(exhaust/hot side)
T3 stage 1 turbine wheel(exhaust/hot side)


the exhaust manifolds are basically the same so you can use it

its not good to put the WB sensor close to the turbo like a NB O2 sensor, 18" away from teh turbo is recommended but some get away with 12" or slightly less, YRMV

[janus]

oh well i got it all wrong then - lol, thanks a lot. that cleared up things
wouldn't that thing be too fast of a spool up, even more with a ported ex manifold? not that i dislike quick spool, but does it hurt midrange/topend very bad?
which widebands do you guys use, i saw cindy sells the AEM system. how many people on here are using wideband or moparchem?

[speeduphoria]

Quote:

Originally Posted by janus wouldn't that thing be too fast of a spool up, even more with a ported ex manifold? not that i dislike quick spool, but does it hurt midrange/topend very bad?

its bigger then the mitsu you have

for 14psi it will do well on a 2.5, fast spool and cooler intake temps then the mitsu

[tryingbe]

Quote:

Originally Posted by janus how much boost would i run max, provided i have the stock IC and enough fuel. stock exhaust for now, but might change soon, dunno yet. virtually, i would have a 2.5 TII then (remember i'll also get the rad/IC)? and i could keep my mitsu manifold? i ported it myself, so would be cool to see how it'll run thx p.s.: oh and for the moparchem, i already found this site some days ago but i can't find anything for the 92 models and also moparchem didn't seem very popular at all. well, i still have a zeitronix zt-2 wideband system and a pda for pocketlogging kicking around, could i use this for scanning? best thing would be to put it in the stock location of the nb o2 and feed the wb o2 signal to the ecm, not sure though if this is possible. is there any other obd or aldl port on these cars?

Save your money and DO NOT buy a TII radiator/intercooler. Stock TII intercooler cools decent, but add a lot of restriction, you're looking at 2-3 psi drop at around 15psi. I'd stick with the radiator you have now and mount and aftermarket intercooler up front.

Exhaust manifold is the same between TII Garrett and Mitsubishi turbos.

Europe cars are odd, and it is usually 1-2 years behind US models, you need to find out exactly what computer it is using. Take some pictures of the engine and computer.

WORST thing you can do to a wideband o2 sensor is to put it too close to the turbo. That will shorten the sensor's life span.

Quote:

Originally Posted by janus oh well i got it all wrong then - lol, thanks a lot. that cleared up things wouldn't that thing be too fast of a spool up, even more with a ported ex manifold? not that i dislike quick spool, but does it hurt midrange/topend very bad? which widebands do you guys use, i saw cindy sells the AEM system. how many people on here are using wideband or moparchem?

With my 2.5, my TII Garrett boost starts at 1800 or so rpm in 4th gear. Strong low end and mid range. No much left over 5000rpm, that's when I know to shift.

I'm using the AEM wideband and Moparchem.

[crazymadbastard]

I beg to differ on the t2 radiator- get it, it makes a good place to run IC pipes. Also at 14 psi the stock Ic should be good enough.

[tryingbe]

Keep in mind he's in Europe, getting parts are not easy.

Beside, most of the TII radiator are over 18 years old, unless re-cored, I wouldn't trust them for autobahn speed.

If he wants a smaller radiator, get an aftermarket one.

[crazymadbastard]

Good points on age and expense- maybe get different
I got a new NOS t2 radiator last year for $100-
Talk about being lucky.

[1984Rampage]

Damn, I spent 500 on a recored GLHS radiator/Ic combo. I think I overpaid and now I want to upgrade my intercooler. Oh well I should have thought things over and realized I wasnt gonna want to keep it stock for long.

[tryingbe]

You can probably turn around and sell the GLHS radiator/intercooler for near that much, if you haven't use it yet...