Fuel Injector Experts

[tmoss]

Originally posted by 1989GT
Also I don't agree with tmoss' statement, injectors need a certain amount of pressure to produce the spray pattern they were designed to produce. So if you up the injector size too soon you'll run too low of a pressure and get a poor spray pattern. Ryan

Any basis for your statement? Bosch injectors produce a good enough pattern for good atomizing as low as 30-32psi if the injector is clean and were only DESIGNED to be used to 44psi.

Yes, you can run more but what affect does that have on the magnetic circuit that lifts the pintel? It makes it lift later (and possibly not a high depending on fuel pressure) and it closes sooner as it has to overcome more pressure to open and has more pressure assisting in closing it - the injector was not DESIGNED to run at that high a pressure. F/S guys run 100% duty cycle at high pressures to feed their 340-350 "stock" engines with 19# injectors, but they only do it 1/4 mile at a time - they are not street engines.