i have a p pump block and 1st gen head i dont know what injectors will fit i want to get 370 marine injectors but dont no if the will fit?any help?

 

Depends what year the head is, I was told if it is '91.5 or newer it has 7mm injector nozzles and if it is older it will have 9mm nozzles but you can get copper spacers from cummins to use the 7mm nozzles.

 

dont go with the 370's get something good like SDX the 140HP are real common
SDX/Smokem

that is correct 89, 90, and up to 91.5 were 9mm holes and yes the spacers are common as well but........

if I am not mistaken the first gen head has a different injector angle than the 2nd gen block I think but dont know for sure

if that is the case when ordering you will want to ask whomever you get them from to get ya the correct angle

also is this thing a P-Pump?

 

Definitely check with an injector expert before you buy, but I was told the difference in spray angle is dictated by the injector nozzles.

So if you have a ppump block and ppump pistons (they are different), you should just need ppump injectors with ppump nozzles.

I just built a '93 engine with a ppump mounted on it and i'm using ppump injectors, I've only run it for about 20mins but it seems to run great. I did notice the ppump head had much thinner copper washers under the injectors, so the injectors stick into the combustion chamber more. I can't find any info on if that is how it was from the factory.

 

its a 1989 head and im going 2 put a mild cam in it im gion to put p pump pistions and it is guna b p pumpd the block is orginally a p pump i just arent sure weather 2 get 370 marines or 1st gen injectors ?

 

The Cummins Non-intercooled engines (1989 through December 31, 1990) use a 9mm injector hole, with a 155 degree injector spray angle.
The piston bowls are shaped correspondingly, HOWEVER the (Lucas) POD injector (7mm hole) is the same spray pattern, as are the Marine 370 injectors (7mm hole).
Simply using the aformentioned shims will allow the use of 7mm injectors in the 9mm head.

Some people make a big deal out of the fact the the 9mm head has a definite cracking issue in the injector hole, and while they do tend to crack there and they do seep through the washers, they seldom ever do much more than seep a minute amount of compression.
To this point, personally, I have never seen them crack and have a coolant issue.

The spray angle on the '91.5-'93 INTERCOOLED injectors is 145 degrees.
The spray angle on the '94-'98 (pre 24 valve) injector is also 145 degrees.

The injector BODIES are different where the injector line fitting attaches to the body.
The '94-'98 line fitting is larger than the '89-'93 style.

The tips (sometimes called "nozzles") interchange between the bodies on all years, but the "pop pressures" (Initial line pressure required to move the pintle) differs between the 2 different pump styles (89-'93 VE vs. '94-'98 P-7100).

I (and others) consider the Non-Intercooled VE engine to be the "Hot Rod" engine of the VE line, as it has the largest stock injectors, flow wise, (4x.013) of all the 12 valve engines, as well as a bit more agressive cam profile.
As stock, the non-intercooled VE pump is usually very conservatively tuned, with much more capacity available in it's adjustments.

The above specs are to be credited to the GREAT FOLKS at 1stGen.org.

Mark.

 

thank you so much thats what i wanded to no