A question about injector tip sizes

[NoSeeUm]

For example a 7x18 injector. What does that mean exactly?



I am thinking 7 holes with . 018 diameter holes.



Thanks for any replies;

Jim

 

[ROADWARRIOR]

You are correct.



Dan

 

[nickleinonen]

that is pretty big...

at my work, the gp38 loco's [2000hp 16v645], we run 5 hole 0. 0134". .

 

[Turbo Tim 1]

How many HP would a 7x18 be?

 

[NoSeeUm]

How many HP would a 7x18 be?

I am not sure, I saw them in a TDR add recently. I was guessing 250 Hp or so as they are pulling injectors.



Anyone know what the hole (I believe 6 of them) size the stock injectors are for reference?



Jim

 

[carfichris]

stock tips sizes

To my knowledge, stock 24v injectors use 7 holes 0. 0065 in diameter. 7 holes @ 0. 0065 produce fuel openings of 0. 00023 sq in. 7 holes @ 0. 018 open up to 0. 00178 sq in. Thats 7 times the surface area even with holes that are so small. Atomization has to be a concern if the fuel delivery system is left alone. Take your 5/8 garden hose off and hook up a 4 3/8 fire hose with that same water supply... watch her dribble. Balance and a slight increase in size seem to be the way the pro's (Don, Keith and Brett) seem to have taken their products.



Chris

 

[Turbo Tim 1]

I can now tell you that 7x18 injectors are too big for me to run on the road, with the box off there is a constant haze and if I step on it the road gets blacked out. I got these off e-bay and I think they'll be going back on there.

 

[PToombs]

Time for a bigger turbo Tim! :-laf :-laf

 

[Turbo Tim 1]

Twins might do it

 

[Highfinance97]

I can now tell you that 7x18 injectors are too big for me to run on the road, with the box off there is a constant haze and if I step on it the road gets blacked out.

My buddy just bought 7 X 0. 024's



you should see those bad boys:-laf





Michael