Injector pressure?

[Gr8ride]

Howdy,

What is the ideal pop off pressure for the injectors?

For the sake of conversation lets say the injectors are currently set at 1100 psi, and I change them to 1800 psi will I have to adjust the timing?

 

[typ4]

The shop I use sets the idi to 2150 and they even do it to new ones to make sure they are even. I ran my new stanadynes for 10k miles and they all dropped to 2050 except one which was still at 2150. The timing change is small but needs to be reset, Higher pressure = later timing

 

[icanfixall]

Yes.... Its as stated above. But I remember 1450 psi being the lowest pressure before they need to be replaced. I dought the truck would run at 1100 lbs....

 

[Gr8ride]

icanfixall, I was just using those numbers as an example seeing as how I had no idea what the actual pressure should be, but now I do.

Thanks guys

 

[DeepRoots]

just a question I've always wondered, is how come we can't make the injectors pop off higher?

like 2800psi?
our pumps are good up to 5000psi

 

[icanfixall]

Higher pressures will take away the long life (100,000 miles) these pumps usually last. I just had my "G" injectors with 5200 miles on them pop tested. The low was 1850 and the high was 2000 lbs. I think they were OEM 2150 but thats just a guess. I will be running them in my second rebuild....

 

[Agnem]

If I'm not mistaken, the whole point of higher pop presure is better atomization. With our pre-chambers it's splitting hairs to squirt it in any harder. Ken's performance nozzles have sacrificed spray pattern for flow, and the proof is in the numbers. Higher pop pressure or better atomization would probably only make the EPA happy and not do anything really for you.