high toned sob
New Member
Hi guys, i need some info on what these adjustments would do...i have included what i think i know, lol..
Im not sure these pics are going to be in order, so the first questions are looking into the pump.
The second set of questions is about the side of the pump where the idle screw and maybe external high rpm is?
The last set is on the timing advance/retard arm.
1. Yellow screw raises/lowers max rpm limit. What if you grind the nut down or add a .185” small piece of rod at the end to apply more pressure to the spring inside the shaft?
2. Yellow nut i have no idea, max fuel de-rate? What would happen if......?
3. Orange screw is some kind of gov adjustment? What would happen if you mess with it, what does it control?
so i know the orange would control the amount of retard, and thats determind on a stand. The white cam is “when” it starts to come on. Any benifits to playing with these? Could i somehow tune this to have retarded timing at idle to really quiet the engine down, then go back to normal control off-idle? Like “build” a small ramp on the cam in the idle position? Causes/effects?
the combination is:
dual plane 6.2 intake with a custom hat i made
Dodge ram intercooler
18:1 pistons
4911 pump (i drilled and tapped for a 3/8 inlet, have already maxed the leaf, was thinking about just taking it out)
He351 vgt turbo
Arp studs
Full 5 main girdle made from 1/2 plate
New bosch 40 hp nozzles i set at 2400psi
‘99 water pump and dmax fan
this is with a nv3500 in a older square body, 35’s and 4.10’s
mainly a toy/cruiser truck, but would like to be able to tow a car on a trailer if needed
Thanks fellers
Im not sure these pics are going to be in order, so the first questions are looking into the pump.
The second set of questions is about the side of the pump where the idle screw and maybe external high rpm is?
The last set is on the timing advance/retard arm.
1. Yellow screw raises/lowers max rpm limit. What if you grind the nut down or add a .185” small piece of rod at the end to apply more pressure to the spring inside the shaft?
2. Yellow nut i have no idea, max fuel de-rate? What would happen if......?
3. Orange screw is some kind of gov adjustment? What would happen if you mess with it, what does it control?
so i know the orange would control the amount of retard, and thats determind on a stand. The white cam is “when” it starts to come on. Any benifits to playing with these? Could i somehow tune this to have retarded timing at idle to really quiet the engine down, then go back to normal control off-idle? Like “build” a small ramp on the cam in the idle position? Causes/effects?
the combination is:
dual plane 6.2 intake with a custom hat i made
Dodge ram intercooler
18:1 pistons
4911 pump (i drilled and tapped for a 3/8 inlet, have already maxed the leaf, was thinking about just taking it out)
He351 vgt turbo
Arp studs
Full 5 main girdle made from 1/2 plate
New bosch 40 hp nozzles i set at 2400psi
‘99 water pump and dmax fan
this is with a nv3500 in a older square body, 35’s and 4.10’s
mainly a toy/cruiser truck, but would like to be able to tow a car on a trailer if needed
Thanks fellers