Thanks to Eric, I now have a fresh set of performance injectors installed! Eric made the trip to WI this weekend, and while I was dynoing trucks, he was buttoning my truck up.


Sunday we played:





http://www.dieselplace.com/forum/uploads/Eric_Salute.jpg








http://www.dieselplace.com/forum/uploads/SP_tipping_rear.jpgEdited by: Kennedy

So did you leave him out there in the mud?? At least he is getting closer to Colorado!! http://www.dieselplace.com/forum/smileys/Cool.gif

I just hope his truck's not under that quad somewhere....

Now dat is some Gumbo mud, righ dere uhuh.


Those injectors sound mighty interesting...... http://www.dieselplace.com/forum/smileys/Cool.gif

John
Looking forward to the details and numbers!

Just to show that he didn't get stuck all the time:


http://www.dieselplace.com/forum/uploads/Eric_in_action_2.jpg


http://www.dieselplace.com/forum/uploads/Eric_in_action.jpg


http://www.dieselplace.com/forum/uploads/Clif_chasing_Eric.jpg


http://www.dieselplace.com/forum/uploads/C6C_P5020674.JPG





http://www.dieselplace.com/forum/uploads/783_P5020695.JPG





http://www.dieselplace.com/forum/uploads/Muddy_SP.jpg





http://www.dieselplace.com/forum/uploads/Eric_Rincon.jpg

As you can see from the first Pic, Polaris is #1http://www.dieselplace.com/forum/smileys/Confused.gif


John told me to bring some old clothes... guess I underestimated that a bit. I think it took 'ol Cliffee longer to clean those quads then it did for me to make the trip back home


Looking forward to Junehttp://www.dieselplace.com/forum/smileys/Evil Smile.gif

As far as the injectors go.... Very impressive. I wont dispell numbers until John posts them, he has dyno charts. Those of you looking to do an injector upgrade... These are it.

must be the tireshttp://www.dieselplace.com/forum/smileys/Big Smile.gif

Injectors did really well. I'll look at posting some stuff later in another thread as I took this one a little off topic. Yeah Eric, I thought that was what you were trying to say (Polaris #1) in the first pic. At least you stayed HALFWAY out of the impassible hole...








Too bad we didn't shoot video of the first burnout that I did after the install. I did n't think the tires would ever hook...





I kept the injectors mild at about 80 lb/ft through the whole curve ending up at about 50HP peak to peak. Much more and you'll get substantial smoke on stock programming...

Couple 3-4 questions ....


John


Who's injectors??Your own ?? How much for the set ??


Eric


How did the injectors and associated supply lines and connections look compare to Hoots ??





Mac

. Edited by: Max Power

Couple 3-4 questions ....


John


Who's injectors??Your own ?? How much for the set ??


Eric


How did the injectors and associated supply lines and connections look compare to Hoots ??





Mac


Try to answer for John.... He started with new injectors and had them flow tested and then reworked by a reputable shop. They are the same ones he advertises on his site.


Lines looked typical to what I expect. The no 7 injector line at the rail did have an abnormal amount of rust buildup, but it didnt effect the sealing area. All lines were cleaned thouroghly (sp) before reassemble. Fittings were packed with Di-electric grease to prevent intrusions. In all reality, Hoots lines didnt have to be replaced, but it was done anyways.

I'll add that where the return line on the driver's side ties down to the head, the bolt was not properly torqued.





The injectors were assembled and tested after modification. While the numbers are not exactly matched, they are quite well grouped and we KNOW what thery do...

Good stuff,Very interesting, thanks and I await more info ....





Mac

GOT A FRIEND THAT HAS AN AFTERMARKET SET OF INJECTS AND HES SEEING HIGHER EGT'S AS WELL AS WATER TEMPS. I SUPPOSE THESE WOULD GO HAND IN HAND IF THERE WERE MORE FUEL FLOWING.

John, how much did you have them honed out? What are the numbers?

In all reality, Hoots lines didnt have to be replaced, but it was done anyways.



I will argue... as usual..http://www.dieselplace.com/forum/smileys/Embarrased.gif that my injector lines, although may have sealed when reinstalled, after scotchbrite and close inspection, were utterly atrocious looking.

Nothing personal Eric but you and I both know those lines were corroded up to and closing in on the sealing surface. I understand GM doesn't replace parts that aren't failing right then and there. I should put one of those corroded line ends in my sig so we can look at it over and over http://www.dieselplace.com/forum/smileys/Shocked.gif


FROM THIS POST (http://dieselplace.com/forum/forum_posts.asp?TID=5737&PN=2)



The scariest part of that TSB is it doesn't address the corroded fuel lines.

They should also be replaced.




Hoot, your dead on, hopefully the techs will inspect them enough, after seeing yours cut apart, I dont risk it at all.


How would you all like to have this re-installed...
This is all cleaned up. It was caked with flakes of corrosion. This tip goes right into the feed orifice of the injector. When you remove it, all the corrosion flakes fall right into the injector inlet.
http://www.uscom.com/~hoot/cars/duramax/gmc/fuellinecorrosion/images/DSCN4653.jpg

BUT..... I never had injector problems all the way up until I let the truck go. Unless that's what the strange knock was. 72,000 miles.
http://www.uscom.com/~hoot/cars/duramax/gmc/fuellinecorrosion/images/DSCN4655.jpg

http://www.uscom.com/~hoot/cars/duramax/gmc/fuellinecorrosion/images/DSCN4673.jpgEdited by: hoot

Interesting that the corrosion is worse on one side of the nipple. The under side looks reasonable.

hoot, You and me both agreed that they should have been replaced and I am not backing down on that at all.. Of course when the GM rep came in and looked at it ( it caused a red flag from 'excessive parts' used for repair) He politely scolded me for replaceing those lines because I knew better. I simply put him in our shoes.. Told him that this customer drove 700+ miles for this repair, if he is going home and it starts to leak, who is he gonna call? Not gonna call the rep or the dealer, he is gonna call me! He seen it my way in the end and let it go. As scary as it looks, GM finds that acceptable to reuse...http://www.dieselplace.com/forum/smileys/Disapprove.gif


I have found a good way of cleaning any loose deposits from these and can put them togather with out them develping any leaks. Not that that helps in the arguement... But I have confidence in my methods and dont second guess any decision made on Hoot's truck or JK's truck.

Eric,

Being there and seeing those lines as you removed them was a great lesson for me and for all here that may have injectors replaced. As bad as they looked, only the very tip portion does the sealing so yes I believe cleaning them up as long as you don't alter the very end portions geometry, will result in proper sealing. I just couldn't see putting those corroded looking high pressure lines back in my truck. Better to let the corrosion start from new again.

Prior to touching anything else after removing those lines, you cleaned out injector feed orifices with your "tool" much to my satisfaction. No problem there or with you personally. You did a fantastic job on my truck! and left me impressed.

All I'm doing here is making everyone aware of this problem. It was brought up before on numerous occasions but these things fade away as new members come on board. Everybody should know and be aware in the event their truck goes in for service.

Now the LLY with the external connections probably will not have this issue.

Ray403Dmax,

The reason one end is corroded I believe is because thats the end that resides inside the valve cover and gets exposed to the heat and gasses in addition to being housed in a big sleeve that creates it's own special corrosive environment. Why this is I do not know. I think it could be related to the fitting connection close to high voltage injection solenoid. Possibly electrically induced?Edited by: hoot

Hoothttp://www.dieselplace.com/forum/smileys/Hug.gif


I have them lines on the way to you. I think you are correct on the new guys not relizing the trouble. I forget how fast this site is growing....


Lets you and I put our head togather on an article describing this condition, along with how to prevent it, and what happens.....

I know someone who sprays WD40 on his external lines every week. Your opinion on this, good or bad?

must be the tireshttp://www.dieselplace.com/forum/smileys/Big Smile.gif





JJ knows the place! Got a lot worse since we last played...

It looks alot worse need to get the ramsey put on http://www.dieselplace.com/forum/smileys/Big Smile.gif

I know someone who sprays WD40 on his external lines every week. Your opinion on this, good or bad? bad, all the WD-40 runs down the lines, collects down there. Need to put somehting on them to prevent stuff getting in there. A dielectric grease of seal them off with silicone

Thanks Eric. It didn't sound like a good idea when I heard it, but this guy is convinced he's doing something great for his truck. He's from Virginia, and I think he was told to do this from a mechanic at his dealership. (he's a bodyman)

I have another theory about the corrosion........... If you wash your engine bay, water gets down there and accelerates the corrosion. Especially if you use the soap at the car wash. That soap is highly corrosive if left on your car.......... ever noticed what is does to bare aluminum. If you do wash your engine bay, I would suggest taking it home and blowing out the tube area with compressed air and spraying a small amount of silicon spray on the tubes.

So that's what the tires were for. http://www.dieselplace.com/forum/smileys/Thumbs%20Up.gif How did the Rincon do?


Burner----------> http://www.dieselplace.com/forum/smileys/Big Smile.gif

Not so simple.

The nipple is basically sealed off from above by the clamping action of the nut. You would have to loosen the line nut so whatever you are pouring gets past the inner circular clamping part. Otherwise when it's tight, the corrosion area is pretty well sealed off.

So that's what the tires were for. http://www.dieselplace.com/forum/smileys/Thumbs%20Up.gif How did the Rincon do?


Burner----------> http://www.dieselplace.com/forum/smileys/Big Smile.gif





Rincon isn't bad if you can get the wheel speed up. The 9.2:1 compression has to go, BUT then we'll probably need a Transgo kit for it...http://www.dieselplace.com/forum/smileys/Wink.gif

and some carb work......

and some carb work......





Don't remind me...

"get the wheel speed up" isn't that what NOS and a little extra fuel is for?