Yeeeep... DAP 75HP Injectors! :hyper:Its raining like a cow pissin' on a flat rock! :ahhh:Stay tuned! I'm gonna post up about the install and let you guys know how it pans out!

Gotta love to see Santa Clauses' off season brown uniform huh...haha

Good luck. i'll be intersted in how it turns out.

Yeeeep... DAP 75HP Injectors!

Its raining like a cow pissin' on a flat rock!

Stay tuned! I'm gonna post up about the install and let you guys know how it pans out!

I haven't heard that in years. Thanks for the laugh.

Looking forward to hearing how you like the injectors. I need to upgrade mine and have been on the fence between the RV275's or something a bit bigger. Mileage and not killing the trans are my biggest concerns.

I will be interested also as I just got some 75hp injectors also and now am looking for a place to pop test them. It will be next month before I will have the funds to have them installed. I am looking forward to getting them installed, so it will be great to hear how they work in your truck so I know what to expect.

It was not the man in braun... It was the man in blue. The one that carries the mace and doggy treats. Imagine that! :whistle:When you come up here to Idaho, you start running into people that say the darndest things. My first year here up in the North, I thought I was not gonna be able to understand what they were sayin'...I talked to the guy at DAP, and he said the 75hp injectors are the biggest I should go with the stock turbo. I don't want anything bigger anyways as I don't want to stress the transmission.DAP has them popping at 300 bar. I'd like to get them to pop at 4500psi. I think thats 310 bar. We shall see how they do with what they have them at..The guy at DAP said I should see about a 2mpg gain, and when I add a tuner box, it should not be surprised to see a total of 4mpg increase. If I get them IAT fooler mod in, and if my injectors are not performing right, maybe I will see alot more!Guess we shall see! I won't be able to start doing them until I get back into town and the weather is fair... Hold tight!BTW, DAP was able to tell me all I needed to know about their injectors:VCO Nozzle, not SAC's. 7-hole at 300 bar. Not sure on hole-size or needle style. They should be very effective for DD!

It was not the man in braun... It was the man in blue. The one that carries the mace and doggy treats. Imagine that! When you come up here to Idaho, you start running into people that say the darndest things. My first year here up in the North, I thought I was not gonna be able to understand what they were sayin'... I talked to the guy at DAP, and he said the 75hp injectors are the biggest I should go with the stock turbo. I don't want anything bigger anyways as I don't want to stress the transmission. DAP has them popping at 300 bar. I'd like to get them to pop at 4500psi. I think thats 310 bar. We shall see how they do with what they have them at.. The guy at DAP said I should see about a 2mpg gain, and when I add a tuner box, it should not be surprised to see a total of 4mpg increase. If I get them IAT fooler mod in, and if my injectors are not performing right, maybe I will see alot more! Guess we shall see! I won't be able to start doing them until I get back into town and the weather is fair... Hold tight! BTW, DAP was able to tell me all I needed to know about their injectors: VCO Nozzle, not SAC's. 7-hole at 300 bar. Not sure on hole-size or needle style. They should be very effective for DD!

That will work as well.

It was not the man in braun... It was the man in blue. The one that carries the mace and doggy treats. Imagine that! When you come up here to Idaho, you start running into people that say the darndest things. My first year here up in the North, I thought I was not gonna be able to understand what they were sayin'... I talked to the guy at DAP, and he said the 75hp injectors are the biggest I should go with the stock turbo. I don't want anything bigger anyways as I don't want to stress the transmission. DAP has them popping at 300 bar. I'd like to get them to pop at 4500psi. I think thats 310 bar. We shall see how they do with what they have them at.. The guy at DAP said I should see about a 2mpg gain, and when I add a tuner box, it should not be surprised to see a total of 4mpg increase. If I get them IAT fooler mod in, and if my injectors are not performing right, maybe I will see alot more! Guess we shall see! I won't be able to start doing them until I get back into town and the weather is fair... Hold tight! BTW, DAP was able to tell me all I needed to know about their injectors: VCO Nozzle, not SAC's. 7-hole at 300 bar. Not sure on hole-size or needle style. They should be very effective for DD!

with my 60's i saw about 2mpg, add a smarty and some 2 stroke and i would venture to say your bouncing on 4mpg. if you want a video to watch, check out my article about injector install.

I will refer to your video about the injector install when the time comes. I watched it once, so I got a good idea what to expect. I'm tooled up for the job!Hoping to avg 20mpg. I think I may break that and hover in the 22 mark though! ...its still raining though. :banghead:We've got some good urban flooding going on! I was up to my ankles in water when I stepped off my porch. The local creek has already flooded over its banks. This is just the start too!

Alright Pepsi! Your video did not discuss everything needed to do the job. That okay though... you get a mulligan this time! :wink:Just gaining access to remove the steel lines is a PITA! I almost stripped out one of the bolts to the engine lifting bracket. I managed to get behind it and loosen the steel line.So I'm at a bit of a stopping point here. I removed the steel lines and crossover tubes. Except, I noticed that the end of the steel lines where they mate to the end of the crossover tubes are seemingly corroded of some sort. It is a white color and some reddish brown as well.The crossover tube ends do not have burrs or anything like that except from the shaft down from the o-ring, it looks like its rusty? I cant tell whats going on...I do not have the camera with me, as I think my mother-in-law has it. If you guys cannot comprehend what I'm talking about, I can try with my cell phone.I just need to know if this is a BAD thing or not. If not, is there any abrasives I can use to clean them up? Should I not even bother cleaning them up in this spot? Did not know if its a critical area....

Pretty common and nothing to worry about, a bit of fine steel wool or emery cloth will clean things up good enough.

Pretty common and nothing to worry about, a bit of fine steel wool or emery cloth will clean things up good enough.

COOL! I have both of those. I think some steel wool would be better idea...

On the other hand, I pulled injector #1 and MAN! You guys have gotta see it! I hope the majority of it was not from me! When I get done with the injector job, I will post up some pics!

--- Update to the previous post...

Alright, I got everything buttoned up. Got lines 1, 3, and 4 cracked. Cranked 4 times for about 30 sec. each time. I'm getting nothing. Not even a slight fire...

Suggestions?

COOL! I have both of those. I think some steel wool would be better idea...

On the other hand, I pulled injector #1 and MAN! You guys have gotta see it! I hope the majority of it was not from me! When I get done with the injector job, I will post up some pics!

--- Update to the previous post...

Alright, I got everything buttoned up. Got lines 1, 3, and 4 cracked. Cranked 4 times for about 30 sec. each time. I'm getting nothing. Not even a slight fire...

Suggestions?

you have lines 1-3-4 loose, like completely loose? as in the nut is not on the crossover tube? and your cranking it?

Okay, I'm at a total of 12 cranks or so now. At 10 cranks, I had line 5 also cracked. Fuel started coming out of line 3 and 5. I sealed them all up. After, the truck would start to fire somewhat. It was not turning over and running roug, but kind of firing while cranking. Lots of black smoke. At 12 cranks, I gave up. Was late, cold and hungry.I'm gonna wait until tomorrow to try it again and see if she will crank over. I was thinking about cracking open lines 1 and 4. As fuel was not coming out yet. I think if I can atleast get 3 to get firing she will take off...Hoping that these injectors don't make me have to try and crank a few times in the cold just to get them going on a regular basis...

Okay, I'm at a total of 12 cranks or so now. At 10 cranks, I had line 5 also cracked. Fuel started coming out of line 3 and 5. I sealed them all up. After, the truck would start to fire somewhat. It was not turning over and running roug, but kind of firing while cranking. Lots of black smoke. At 12 cranks, I gave up. Was late, cold and hungry. I'm gonna wait until tomorrow to try it again and see if she will crank over. I was thinking about cracking open lines 1 and 4. As fuel was not coming out yet. I think if I can atleast get 3 to get firing she will take off... Hoping that these injectors don't make me have to try and crank a few times in the cold just to get them going on a regular basis...

the only lines you should have torqued down to 28 ftlbs, is lines 2 and 6. the rest 1,3,4,5, should be completely off of your head, as in the nuts are sitting loose. then crank the engine for 30 seconds, and then let the lift pump run for its 20 second prime cycle. after each cycle, (as the lift pump is running) jump out and look to see if your lines are weeping, as soon as they do then tighten them up. once all 6 line nuts are tight then tighten down your brackets(the things with the blue on them), and i mean bolt down the brackets to the engine, then tighten the brackets themselves. it should take maybe 10 or 15 mins at this point. your aftermarket lift pump should push the fuel through the VP-44. You did bleed the air out of the fuel line going to the VP-44 correct? Maybe i am mis reading, but it sounds like you had the lines tight, then started loosening them? when done, your truck should be like mine, and start right up after 1/2 cycle of the crankshaft, now then join me in the club of stalling out, lolz

i usually open 1,3,4 and start closing them up as they start to bleed....sometimes i gotta get 5 cracked too and ya might have to....i typically crank until one of em starts to bleed, but no more than about 30 seconds, then tighten it up and crank again till the next one bleeds and so on....she will fire, just keep crankin!

i usually open 1,3,4 and start closing them up as they start to bleed....sometimes i gotta get 5 cracked too and ya might have to....i typically crank until one of em starts to bleed, but no more than about 30 seconds, then tighten it up and crank again till the next one bleeds and so on....she will fire, just keep crankin!

i tend to do 1,3,4,5 and fine that 5 usually bleeds first, then 1... Its good to let your starter rest, that is why i let the lift pump cycle, because my fass will push the fuel through the vp-44, and to the lines.

i tend to do 1,3,4,5 and fine that 5 usually bleeds first, then 1... Its good to let your starter rest, that is why i let the lift pump cycle, because my fass will push the fuel through the vp-44, and to the lines.

From what I've read, the lift pump does not push fuel through the vp44. You have to crank the truck to get any fuel past the vp44. I did originally have the lines torqued down, then I loosened them. I did it that way so the lines would seat properly. Sounds like I just need to crack the lines again and shut each one as they start weeping fuel... I'll report back in a little!

Just gotta stay at it, sometimes mine takes forever to blead and one or twice it fired up pretty quick. I sent my injectors back to Lee for a check-up so I will get to do this in another week or so again myself.

These things can be finicky sometimes. I usually never crack the lines on mine, just floor it and it blows the air out eventually (don't think this works for a 24V). However, last week I had all the lines off and the injectors apart and I put it all back together and did the same tactic but this time I had a slightly rough idle. I went out and cracked line #1 at the injection pump and there was no change. I said hmm and cracked #1 at the injector until it started leaking fuel, tightened it back up and all was well. So sometimes they just get the right air bubble in there that wreaks havoc, I had never had to do that before.

The 24v valves are computer controlled. So if I push the pedal in, it does not matter. I would call it an "electronic throttle". Yours is mechanical, ISX. I would have done the same thing, but it does not apply here. It reminds me of those days when I had a carbed truck and had to get it going like that in the cold mornings...

Yea, so I followed my theory. I cracked lines 1, 3, 4 and 5. Cranked the truck. Line 1 started weeping fuel. Closed it. Waited for the starter to cool, then cranked. Got line 5 to weep. Then did 3 and 4. Only took 3 cranks to get her going!

She ran a little rough for a moment then smoothed out. Had a haze at idle. Truck was cold... Got my oil pressure and reved a little. Had a good cloud going. So I ran it for a few minutes to let her purge and warm up a little. Double-checked everything and got her out for a spin!

So right off the bat, she ran ALOT smoother! The response was snappier and does not take nearly as much throttle to get her up to speed! If I'm not careful she can take off from under you!

I did a big loop through town and the outskirts on the backroads. By the time I got it 1/2 way through town, she was already warming up. It was definitely alot quicker than before!

By the time I could get her opened up I was on the backroads. Got her doing 80 without even a WOT. I did not want to do WOT anyways as I don't want to stress the transmission. The transmission seemed to handle the power just fine, too! Seemed to shift alot smoother.

So I noticed driving that if I get her going, the coolant temp is a tick above 190. Hoping that is normal and my cooling system is fine. Just thinking that its from the sudden introduction of all those BTU's?

So the truck puts out more heat. I can have a warmer cab sooner and hotter! Gotta love the excellent atomization! It matters!

Before I did the injectors, cruising, I noticed that the EGT's would be at 700 degrees F doing 70mph. Now, doing 70mph cruising, the EGT's are at 800 degrees F.

Fuel pressure is doing good as well. Did not notice any need to address fuel pressure. Although, BOOST is significant! Getting on it to get up to 80mph, boost was at 27psi. I'm sure I could have gotten up to 30psi or more on a WOT.

Idling warm, it was much quieter and smoother. Although, after my little escapade, I probably sucked down a few gallons! Gotta be easy on the throttle!

All in all, I would say its one of the most IMPORTANTE upgrades! I do not regret doing these injectors!

So, here is some pictures of the injector job!

This is before I cleaned them up.. What is this all about?

Took a wire wheel on my drill to them. Cleaned up pretty good!

Here are my old injectors! WOW! This picture does not do justice! Yea, we can see that they are all coked and sooted up. But what you don't see is that some of the holes looked blocked! Coking dominated these!

Taking out these old injectors, I could see disel dripping off the ends... I dunno if they were all pooled up on the nozzle, or if it was just diesel leaking out from the relief port down the injector.

Regardless, they needed replaced!

I noticed, I have the crankcase breather modification, and it vents right onto my front diff. It looks wet from the venting. I'm concerned these injectors have been leaking for a while now. Is there any tests I can do besides having an oil analysis done to see if I need to do an oil change?

Also, could this amount of coking/soot on these old injectors be all from me? Or is this something that looks like thousands of miles of neglect?