i wanna learn how to madify a cummins and other diesels

Hehe......

The skinny on the first gen cummins........

They have a Bosch VE injector pump, gear driven off of the cam gear. The VE is a single piston rotary pump, good for moderate HP, mine has probably an honest 350 at the rear end, and, oh, maybe 650-700 pounds of TQ. To start out, you need a boost guage, and a Pyrometer. Boost should be measured on the plug under the intake of the manifold, Pyro should be in the joining of the two sections of the ex manifold, before the turbo. Pyro goes like this. 1200, OK, 1250, mmm, ok for a little bit, 1300, hit it and back off, 1400, your brave, don't keep it there long 1600, I have hit it, didn't seem to hurt anything yet, but it scared me, and cumins says my pistons are bubbled. Pyro and boost are not only detrimental, but needs for a guideline.

Mods to the VE pump.

First thing, is to screw the start wheel all the way down on the "ach"? (The boost sensor, this will make it smoke some when you hit the throttle, boosts quicker, then, you grind the pin, or get a bullydog ol smokey pin, I ground mine, line the diaphram up so the skinniest part of the pin is facing the front. Then, pull the fuel pin screw out, break the collar off of it (count your turns) and fix the threads, grab a 2x4, pull the....... You know what, I am going to find a damn link..... brb