just got done putting in a tripple gauge pillar and thought the boost was a little low. only made 16-17lb pulling big hill with foot on floor. Have max fuel turmed 2 turns, daiphran 120*, star wheel 3/4 turn CW and fuel screw cranked down. Dont these trucks make 14-15 stock? I drilled and tapped into IC line just before intake manifold

 

That sounds about normal for stock injectors and a stock turbine housing. A '92 is lucky to make 12 psi stock.

 

what injectors do you all recomend for a little more umph with out breaking the bank. Plan on pullin a trailer a lot grossing 20k+

 

from what i've heard bosch 190's r the next step up and good bang for buck, or pod's but idk about them

 

Unless you want to spend a lot of extra on a bigger turbo, 190's are about as big as you can go in a tow rig.

 

my causins 92 made 20psi with the 16cm housing and no fueling mods

 

My 91.5 stock 14 PSI.

 

my 92 has hit 28psi with fuel screw bout three turns and fuel pin 120*, but i just inserted into the port right under the intake elbow. don't know if it would make that much difference. o yeah, stock injectors.

 

Yeah, 14-16 stock is about right. If you make 12psi stock, even with a Lagmaster, you have fuelling issues.

Get a fuel pressure gauge, and go to town turning the fuel screw. Lack of fuel pressure & volume is what kills the VE, not fuel output as some would tell you. I towed 22-25K a lot with a 93 with stock injectors and turbo. Made 25-28psi boost, with about 900deg post turbo EGT. Never had any issues with power from central KS to ColoSprings.

Also, check injectors, valves, and lift pump output.

Daniel

 

i'm pushing 31 lbs right now with fuel turned down and stock injectors dave....is mine a fluke?

 

mine pushing about the same but i have the max fuel up nad the diafram down all the way, if i turn up the diafram close to 40 sweet but lots of smoke at take off.

 

are the pump tweeks that i did the right amounts to maximize power?
Have max fuel turmed 2 turns, daiphran 120*, star wheel 3/4 turn CW and fuel screw cranked down

 

i do believe you can go 3 turns on the main fuel and you could grind your fuel pin down and i bottomed my star wheel down and came back about 1 full turn back and my smoke screw is turned all the way down

 

i tried 3 turns but couldnt get the idle low enough the linkage wasn't long enough to travel that far. any major issues with egt while towing?

 

mine runs cooler egts down the free way and less boost at cruise but i havn't hooked up my trailer yet. i would think that it would stay close to the same (unless your really smokeing all the time) when towing sence it doesn't have to work as hard to get the same power as before. imo