Injector Pump

[DHendrix]

How much power can a 1st gen pump put out?

 

[DHendrix]

injector pump that is

 

[JLEONARD]

A pump can't put out any power... it feeds the engine fuel .

There are other factors involved besides the pump.

 

[DHendrix]

Let me rephrase my question how much power can a first gen injector pump keep up with?

 

[DHendrix]

Also would it be possible to run 2nd gen injectors with a 1st gen pump?



I have recently purchased a 1st gen engine and I am going to build it. I would like to get into the 400 hp range and stay streetable would this be possible with the 1st gen pump? Any other suggestions or tips on how to achieve my goal would be appreciated.

 

[Greenleaf]

You need the injector tops. The portion that threads onto the body.



Our engine is the same as any other. Fuel and air. It's only money. 400 RWHP will work. Don't mess with the HX35 turbo. It will not keep you cool enough. I know they are rated for 375 but it won't be enough even at that. Maybe, maybe if you have a highly polished head and a large cooler. The small turbine housing on the 35 is not gonna work out. You'll need a turbine with a larger dia. such as the 40 or custom 50.



Too large a turbo and it will set there and go along for the ride. You'll top out the EGT prior to the turbo activation.



I'd suggest a modern "performance hi-flow" injector as opposed to the old school that simply dumps the fuel in on top the piston.

 

[JLEONARD]

I'd suggest a modern "performance hi-flow" injector as opposed to the old school that simply dumps the fuel in on top the piston.

Basically VE pump (1st gen pump nomenclature) puts out lots less fuel pressure to the injectors than a 2nd or 3rd gen pump. So if you use 2nd gen injectors, the holes are set for that higher fuel pressure and since you don't have it will simply dump the fuel in a less than desireable fuel pattern for complete combustion.

A first gen designed injector will do better in that regard.

 

[CToney]

Its pretty easy to hop up these trucks a little its taking them to the next level that gets difficult. Fuel pressure is a big deal. The first gens injectors pop at ~3550, second 12 V ~4000, 2nd 24v ~4500, and the 3rd gens stock up to 23,500 psi. Big difference in the amount of fuel per unit of time. Better atomization at higher pressure. Cleaner with more power. The first gens are certainly easier and more economical to work on though.