50trim-Stage2

[Stratman]

Specs: 50 trim compressor wheel in machined stock T03 housing/ Stage 2 turbine wheel in .63 housing.

Well guys, got the motor in the car after 3 years. LOTS of tuning ahead!
There has been discussion of the 50 trim wheel in a machined stock T03 compressor housing on another thread. The real problem with it so far is lots of lag. I'm trying to let the motor break in some before I flog it for tuning under boost, right now I'm trying to get idle situated as this motor is WAY different than the old 2.2 in there before.

The turbo on this motor takes around 5000 RPM's before seeing 15 psi and is real slow to get there. Haven't held it long enough yet to see what it's like when it shifts to second due to break in. Definatly seems like the turbo is maybe a little to big for my 2.2 Daytona. There is a definate difference in exhaust decibels with the .63 housing, "much" more throaty and deeper than before.

Attached are pics of the stock T03 Garrett and the new 50 trim side by side when I built the motor. I will have more updates on here and the website when I am fully able to tune with no worries.

[glhsken]

Ahh Auto...

Try what I said. You should have no problem ramping by low 4's with your car. From everyone I've ever seen with this turbo, it will build slowly to 10 psi then WHAM... it goes full.

Chris, the moly rings will either take a set or not. I give my engines 20 minutes. This one will be run up, run down a bit in the Garage. The car loaded onto a trailer and then flogged at the dyno.

[contraption22]

Ken's right.. i run that exact turbo,, and it's REAL slow getting to 10psi, then it shoots up.

[Stratman]

Quote:

Originally Posted by contraption22 Ken's right.. i run that exact turbo,, and it's REAL slow getting to 10psi, then it shoots up.

I just come from lunch and decided to hold it WOT till it hit second. It shifted before 15 psi was reached, LOL. Felt real strange. Of-coarse, I was already driving 30 MPH before I hit it.

[tarkus1]

Hmmm, I am in the process of replaceing my S-60 with that turbo right now.
I will have it finished Saturday. The S-60 felt and was sluggish until I finally put it on a dyno. Took some fuel out of it, picked up 20 hp and just spooled better all around. Can't wait to see how this one works.

[contraption22]

Quote:

Originally Posted by tarkus1 Hmmm, I am in the process of replaceing my S-60 with that turbo right now. I will have it finished Saturday. The S-60 felt and was sluggish until I finally put it on a dyno. Took some fuel out of it, picked up 20 hp and just spooled better all around. Can't wait to see how this one works.

Be careful with that. Its a good thing you did it on a dyno, probably with A/F monitoring. I kept taking fuel pressure out till it spooled decently, and ended up blowing a headgasket and melting the deck of the head just a tad. Pistons seemed ok tho. Forged pistons rock

[Mystryguy]

i have the same turbo on the lancer and it does a similar thing... except only in first gear (523) 2nd it will load enough to reach any boost psi. Plus when i took some low end fuel out it felt much better.

[tarkus1]

Quote:

Originally Posted by contraption22 Be careful with that. Its a good thing you did it on a dyno, probably with A/F monitoring. I kept taking fuel pressure out till it spooled decently, and ended up blowing a headgasket and melting the deck of the head just a tad. Pistons seemed ok tho. Forged pistons rock

I was at an a/f of 10.8 at redline plus I kept an eye on the egt gauge. My temps actually went down alittle after taking out some fuel. I don't trust just going by a/f, also need to see what the temps are doing. Thats why I have not put a map clamp on my SRT-4, everyone is doing it but I don't think anyone has actually watched the egts.

[Stratman]

Quote:

Originally Posted by tarkus1 I was at an a/f of 10.8 at redline plus I kept an eye on the egt gauge. My temps actually went down alittle after taking out some fuel. I don't trust just going by a/f, also need to see what the temps are doing. Thats why I have not put a map clamp on my SRT-4, everyone is doing it but I don't think anyone has actually watched the egts.

At 12-15psi around 5500 RPM's my EGT's seem to want to climb higher than 1500 at 11:1 A/F on the wide band before it gets out of second gear (auto).

[glhsken]

Rich on fuel, egt's climbing... my guess is the car wants some more timing.

[Stratman]

Quote:

Originally Posted by glhsken Rich on fuel, egt's climbing... my guess is the car wants some more timing.

I'll add a little and see what happens. Got the new adjustable wastegate and it's been spiking at 15 psi and settling at 12, , is that a sign the the wastegate tension is to tight?

[Stratman]

Raised a couple degrees, EGT's seemed to climb faster, but I never lowered the A/F ratio yet, at 11.5:1 at 12 psi.

I would not advise this turbo with the .63 turbine housing on a 2.2 with automatic for a street driven vehicle. I found out today if I am in third WOTand it doesn't hit passing gear (75 or so), the boost builds sooooo slow!!!
About 8-10 seconds until it hits 4500 to finally get to about 10 psi. EGT's are getting lower at that point so maybe a that's the good way to tune this turbo in, or maybe I just need a much better flowing head than the mildly ported swirl thats on there. Still equipped with high flow cat, 2.5 inch swingvalve and exhaust, and the dynomax turbo muffler. Going to the muffler shop soon to have bolt up flanges installed before the cat so I can dump the exhaust. Wonder how much it would help spool or even if it will at all.

On a sweet note, I was driving 30 MPH this morning getting off the ramp to work and decided to shift it into first gear and floor it to see what would happen, RPM's just to 5000 and turbo spooled FAST to 12 psi, shifted hard when I threw it in second and SLAMMED me back into my seat! Sure wished I could have the best of both worlds.

[1985ShlbyChrger]

I am going to try to work with a compressed air turbo spool system. Then you have instan boost whenever you need it. Think it would work?

[tarkus1]

Lag is an understatement. It has a hard time getting to 5 psi.
All I can compare to is the S-60 I took off. 4500 rpm in 2nd gear and the tires would be squealing for traction. At about 5000 rpm I managed 13 psi boost. I foresee alot of tuning.

[Stratman]

Quote:

Originally Posted by tarkus1 Lag is an understatement. It has a hard time getting to 5 psi. All I can compare to is the S-60 I took off. 4500 rpm in 2nd gear and the tires would be squealing for traction. At about 5000 rpm I managed 13 psi boost. I foresee alot of tuning.

I'm working on that right now. Needs more advance before 4500 on this turbo to get it going. Do you have an Auto or stick?