yeah, higher pressure would end up with a better atomized spray but you would lose a bit in volume. lower pop pressure would flow more fuel but wouldn't have as nice a spray.

 

non-I/C'ed is also 155* correct?

 

Yes.

 

still didn't answer my question...why not marine nozzles?? i'm not being a dick but i would like to know what is wrong with them. or what nozzle you think is better. i would like to get a bigger set of injectors sometime in the future, and knowing this stuff helps to make up my minde.

 

I woudl asumme that fro teh non-I/Ced engines it simply comes down to teh spray pattern.

Would a marine nozzle be a better choice for a non-I/C'ed piston then a 145* injector? or is there something else wrong?

 

the non I/C motors were classified as industrial/marine in 91.5 cummins had to start with emissions and the in a somewhat way reinvented the motor for use on the road

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i ran the 145* injector (1993) with the 155* block (1990) for 300 miles then broke a valvespring pulled the head off the spray is all in the pre cup and laa looks good so i would not see a big issue with mixing the 145 and 155

 

So smokem.

What are your eventual plans here? will you be making/having made different types of injectors and testing them out head to head?

all the fun discussion has got me anxious

 

It has a bit to do with the spray pattern/bowl design and quench area, but the Marine nozzle in general does not seem to have a consistant wear pattern. Some will last and fire well for a long period of times, most will not. I am moving away from VCO nozzles in general, I feel this is the best option, I just have to settle on the Sac volume.

 

oh ok thats good enouff for me, so what do i do when i want to get another set of injectors, go with the 145*s? or get custom 155*?or does it really even matter?

 

heres my .02