Upping the fuel

[cleb]

Andy: I believe you are running way too hot! Post turbo should be 800, 900 MAX. Bad things can start happening above 800. I believe its about a 300 degree drop across the turbo, so your running ~1300 pre-turbo, which is in the danger zone I believe. Here is some more info: http://www.steelsoldiers.com/deuce-modification-hot-rodding/1118-turn-up-fuel.html

 

[andybritt2002]

errrrr im sorry, have had a few brewskies i meant that was my PRE turbo temp. Im sorry for the mistake!

 

[cessnatwin]

I would like to know a little more about that digital gauge setup?

 

[Billy Bobbed]

I use the digital pyrometer and it works great.Ive been playing with my IP screw,I got my EGTs pre turbo at no more than 1200.If it gets close to 1200 I back off on the throttle.Thats with my foot to the floor up a hill.I watch my pyro more than my speedometer.I really like the power it makes now.

 

[nhdiesel]

I'm gonna jump in here with a problem I'm having, since there seems to be some good knowledge in this thread. I have a D turbo and what I'm told is a "g" pump. My problem is that my truck is very low on power, very low on boost (2psi on a steep hill at 1600 rpms), and doesn't like to rev past around 2200 rpms. It will barely hit 2500 if I let it pull for a bit.

I adjusted the fuel screw and got smoke and a bit more power, but no increase in boost. I tried adjusting the droop screw, no change. I know the turbo is working, as I can hear it when under a load, and it sounds fine (quiet, like a stock 5.9 Cummins) and when I shut the truck down I can hear the turbo wind down.

I have checked intake tubing for leaks and can't find any. I have a "C" turbo I can swap onto it but I want to eliminate anything else before doing that. Does the governor have an adjustment? It seems like its being governed too low. Even if the turbo was bad I would think it should still rev to 2600 on flat ground with no load. It seems to be getting enough fuel, as I can get smoke.

Here are pics of my pump:



Any thoughts about what I should do next? The only thing I can think of is swapping the turbo, but I have seen dead turbos before, and they usually either seize completely, or if they get worn and loose, they will be very noisy from the impellers rubbing the housing.

Jim

 

[gimpyrobb]

It doesn't sound like a turbo issue to me. I know they have governors, but don't know how to adjust them. I would look more into the gov. adjustment.

 

[atankersdad]

My son Matt installed an IP in a friends truck after the seals in the IP failed and filled the oil pan with diesel. Prior to the new install Matt turned up the fuel. This motor was a new motor back in 2004, so it was a tight motor. With the new IP and 1 turn of boost, it made a differance. Now it needs a pyro. Good job Matt...