Jordan5687

I've been looking at replacing injectors because as far as I know these ones have 300k miles on these ones. A guy at a local shop is getting me a price on them. As far as I can see online tgeyre around $400. I'm trying to get as best mileage on my 93 as I can. Will this help my mileage, and how much do you think it'll help? I can't spend much, I gotta rebuild some front end stuff as well. Thanks.

93-12Smoke

Larger injectors don't usually help fuel mileage. You may see an improvement if your old ones are just worn smooth out. What all is done to the truck? 4x4, auto or what?

Jordan5687

Rebuilt 4 speed auto, 2wd. Engine runs and sounds good, I guess I can replace with just stock size. Guess cause it seems like it runs good ill just spend $ on the front end parts and new bushings.

d22019

I would go back with stock injectors, they give the best fuel economy. I had a set of 4 hole +40's and I ended up hating them. They were smokey and got poor fuel mileage, basically like POD's with out the idle haze. They did boost the power up nicely but thats all.

93-12Smoke

Spend the money on a better torque conv and you'll get better mpgs.

My philosophy on getting better fuel mileage is actually to make your power on air rather than fuel. Air is free!Better turbo and less restrictive intake piping.

I was getting 24mpgs with 33s but i also have a 5spd. If you can't afford a turbo make fueling adjustments on your pump. Best to do a turbo and ip tuning.

Jordan5687

Ok, with that many miles on the injectors should I look at just stock replacement for the whole injector or just the nozzles? Yeah theres a hx35w on the truck. The intake is very free, just 4" tube 45 degrees to the side of the turbo with a big cone amsoil filter on it. Thanks for the great info. So what would be the best turbo for a pretty much stock truck besides pump mods? The injection pump has maybe 100 miles on the rebuild, tranny has a rebuild since 30k miles ago. We are hoping to push 24mpg out of it. With 3.55 on the rear, no locker I'm pretty sure. Might need to re gear or swap for a 3.07?

93-12Smoke

I would do rebuilt stock injectors if you can afford it.

Jordan5687

How much does that run? Cause the 40hp what I saw was the whole injector for under $400, should be less than that?

93-12Smoke

Should be

KRB

I just had mine cleaned and tested for about $120.

ClassA4x4

Please tell us where you had this done. Thanks.

d22019

Stick a gasket matched 16cm housing on that HX. Grinding mine out made it spool a little quicker. You don't really need the 12cm housing that the HX has with an auto.

Jordan5687

I believe this is a 14cm housing but could be wrong.

KRB

It was at a Louisville diesel shop. I'll have to find the receipt to see what the name was.

KRB

Diesel Injection Service
4710 Almond Rd
Louisville, KY 40209
502 361-2531

Total was actually $142.17 and that included everything (banjos, gaskets, etc) for Bosch 190s.