So i got my actuator brackets and everything set up for the most part, I’ll grab some pictures tomorrow. I didn’t have the fittings i needed to run the drive pressure to the air cylinder yet, so i just decided to set the spring tension lighter to let the pressure from the nozzle to open it for now. I know there are a lot of guys running their mechanical setups like this, like a standard wastegate spring gate; but i worry that there wouldn’t be enough force in both directions to move the collar if it decides to get a little sticky... so i was pretty set on using this big 1-1/2” cylinder, But now i wonder if the pressure from that combined with the nozzle pressure will just be way overkill and I’m going to have to use a crazy stiff spring to tune it...
Ok. The more fun part. I got to drive this thing home tonight and holy freakin cow!! I am not regretting switching to this turbo AT ALL. Even though I’ve gone down a size in injector during this swap, the truck still has definitely gained some top end power. I can tell this turbo is breathing better, while still being able to close it down tight for quick spool up. Worth the hassle.
Some numbers.
I didn’t have time on my drive home to test too much especially since it was dark, but from the best of my ability i believe these numbers to be decently accurate.
Drive:Boost.
10:5
20:10
30:20
40:35
50:50
60:65
70:70
80:75
90:80
For just setting this thing up real quick, i am REALLY happy with how it’s looking. I did notice that if i drop the throttle real quick i get a little bit of flutter/surge, though it’s hard to hear. After i fixed my boost leaks the other day, turbo noise in the cab has probably been cut in half, i’d like to get a quality fly by video so i can really see how it sounds.