arveetek
08-27-2004, 12:44
I've logged around 4000 miles since my turbo installation, including my RV trip to Colorado. I haven't had a single problem, other than a few minor bugs that I got worked out at the beginning. No blown head gaskets, no blown rear main seal, nothing of that sort.
Today I turned the injection pump up another 1/4 turn. I didn't turn up the pump when I first installed the turbo, because I had previously turned it up a 1/4 turn when running N/A. So I now have turned up the stock 4126 pump a whole 1/2 turn. Let me tell you, what a difference that makes! I was smoking like a freight train before the turbo, showing that I didn't have enough air. But after the turbo, no visible smoke at all showing not enough fuel. Now I can smoke some on take-off, and now I can burn some rubber! With the new 31" tires, I just couldn't get them to break loose on dry pavement before. But now, if I powerbrake, I can get the tires smoking! Yee-ha!
Before the pump adjustment, I could only build about 2 lbs of boost while powerbraking. Now I can build about 5 psi. That makes a lot of difference. I've also hit near 15 psi at full throttle. My EGT's rose some, of course. I could only hit 1100 degrees while pulling hard all day long with the trailer. Without the trailer, I could never get above 975. Now I can hit about 1000 degrees without too much trouble. That's just about where I want it.
Man, if installed a 4911 pump, some high-performance injectors, and an intercooler, there's no telling how much fun I could have! And this is all with a stock '82 motor!
My next project, actually, is to start on an intercooler. I think I've got enough boost to warrant it and have it be useful. After that, perhaps some fuel injection upgrades. And then after that, perhaps a better, waste-gated turbo.
Casey
Proud owner of a hot-roddin' 6.2L Turbo Diesel! :D
Today I turned the injection pump up another 1/4 turn. I didn't turn up the pump when I first installed the turbo, because I had previously turned it up a 1/4 turn when running N/A. So I now have turned up the stock 4126 pump a whole 1/2 turn. Let me tell you, what a difference that makes! I was smoking like a freight train before the turbo, showing that I didn't have enough air. But after the turbo, no visible smoke at all showing not enough fuel. Now I can smoke some on take-off, and now I can burn some rubber! With the new 31" tires, I just couldn't get them to break loose on dry pavement before. But now, if I powerbrake, I can get the tires smoking! Yee-ha!
Before the pump adjustment, I could only build about 2 lbs of boost while powerbraking. Now I can build about 5 psi. That makes a lot of difference. I've also hit near 15 psi at full throttle. My EGT's rose some, of course. I could only hit 1100 degrees while pulling hard all day long with the trailer. Without the trailer, I could never get above 975. Now I can hit about 1000 degrees without too much trouble. That's just about where I want it.
Man, if installed a 4911 pump, some high-performance injectors, and an intercooler, there's no telling how much fun I could have! And this is all with a stock '82 motor!
My next project, actually, is to start on an intercooler. I think I've got enough boost to warrant it and have it be useful. After that, perhaps some fuel injection upgrades. And then after that, perhaps a better, waste-gated turbo.
Casey
Proud owner of a hot-roddin' 6.2L Turbo Diesel! :D