Originally Posted by Smokem

12v compression spring uninstalled height 1.090" installed height 1.030" is 300BAR

24v compression spring uninstalled height 1.202" installed height 1.162" is 300BAR

12v spring creates 32lbs when compressed 0.040" and 53lbs when compressed 0.060"

24v spring creates 37lbs when compressed 0.040" and 54lbs when compressed 0.060"

Originally Posted by Smokem

Here we go;

I used the same nozzle, holder, compression pin, and intermediate disk. Using the 24v compression spring with a protrusion from the holder of 0.085" resulted in a opening pressure of 345BAR. Using the 12v compression spring with a protrusion from the holder of 0.085" resulted in an opening pressure of 355BAR. So if you were to ask my opinion whether or not the injector for a P-pumped 24v requires a change in compression spring, I would simply say no. I like to set many of the larger hone size 12v injectors to 300BAR, and I always set the 24v P-pumped injectors that are of larger hone size to 280-290BAR, which falls right in line with what I have seen.