88 Mazda 626 Garrett VGT MS2Extra
 

Here it is bitches. 1988 Mazda 626 turbo(the ugly white piece of ---- in my avatar). MegaSquirt 2 Extra. GT3782VA from a 6.0L Ford diesel engine. This is a VGT turbo. The 'uppipe' has the turbine inlet flange from a stock y-pipe that I raped on one end and a T3 flange on the other end to attach to the T3 flanged manilfold that I already afro-engineered-up. not making any real power yet. MS is controlling the VGT OK right now. Still working on it. putting a wastegate in the system this wekend. Hers the pics:

THis is the pipe connecting the manifold to the turbine inlet. Im adding a wastegate soon.
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This is the downpipe before I added the O2 bung
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and heres some Ford info on the turbo/VGT solenoid:
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Re: 88 Mazda 626 Garrett VGT MS2Extra
 

wat

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

Isnt one of the features of the VTA the fact you DONT need a wastegate?

What diesel turbo is it?

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

looks like its off a ford 6.0l, 2003 to 2007. Those viens like to stick bad, as me how I know :1

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

Yes.....IF you have very sophisticated controls. All I am using right now is a duty cycle table based on RPM and TPS input. I will be working on that, but right now the wastegate is kind of a safety device.

That is correct. Its a Garrett GT3782VA from a 6.0L diesel truck. You know that I know that the vanes stick. This turbo was a warranty core returned for just that reason, but I cleaned it up. I'm also not running sooty diesel exhaust through it either. AND I know that EGTs ned to e watched closely too.

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

Aw ---- I knew I knew that user name. Yes I'm sure you got that on lock down ;) How often do you get warrantty parts like turbos, injectors, ---- like that that doesn't need to go back to ford? I need some spare parts for some cores on up coming mods >:D

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

Under what options in MS did you put the parameters? Are you using the Boost controller duty table? ------- good work son. MS wins again.

Can you share some info on the size of the motor ect is that the 2.2?, initial spool impressions?
Could u also send me your MSQ file?

Does anyone know how small to large the Ar's change?

Vane actuator uses oil pressure ("55-60psi will do")
?

http://www.schumanautomotive.com/for...ead.php?t=2871 That website states the veins open with oil pressure? Is that true?

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

Yes there is a piston inside the CHRA that actuates the VNT using oil pressure. Oil pressure to the piston is controlled using the PWM solenoid that also mounts into the CHRA.

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

OOO so the oil system is closed loop from the rest of the system. I wonder if I could spin this thing with a 1.6L at the smallest point.

Re: 88 Mazda 626 Garrett VGT MS2Extra
 

Its under the 'Advanced' menu. Yes Im just using the duty table. This is MS2Extra. The engine is a 2.2l 3valve. With the vanes at 85% DC it will start maing boost at 2000rpms and be 10+ by 3000 rpms. Im not sure how much the A/R changes. The actator is as Aero described it. The oil system is NOT closed loop. Your just hook up oil lines fom your engine just like any other turbo and the actuator moves accordingly.

heres some other info that some may find helpful:

vane position(DC%) Apms
0 0-.4
10 .45
20 .5
30 .55
40 .65
50 .725
60 .8
70 .95
80 1.1
90 1.3
100 1.5

On a Ford truck, It will never run more than 85% DC. I'm not sure if the solenoid will kill itself past that or what the reason is. I am hoping to get some more information from deeper inside Ford/Garrett/International/Navistar soon.


Turbine
Inducer: 72.25mm 2.84in
Exducer: 66.45mm 2.62in
.9 A/R

Compressor
Exducer: 81.55mm 3.21in
Inducer: 58.00m 2.28in
.58 A/R