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I have had to replace my old 6.5 Diesel (with numerous slapping fan belts which added to to the noise generated by this motor), due to Antifreeze getting into my oil. Instead of ripping this apart in the cramped space of my M998 engine bay, I chose to pull and replace with a newer upgraded A2...

Some use those black plastic plugs which push in and stay fairly secure, paint over them or leave them black....it all looks tactical

UpDate:::::: Made it to Hatteras NC without issue and has been running great ever since.......It loves the beach... Runs like a Ferrari on he Interstate..

Centramatics I have seen these discussed before but I thought they were way expensive but $276 for four doesn't seem to bad for fixing that issue....**** for what I have spent on other parts and such, it is probably a bargain :)

Tach, Humvee and 65 MPH Thats about right....although after 60'ish I get tire, I think someone called it "harmonics" ... annoying at best...the run flats probably help making things crazy past 60...hard tire to balance without internal beads...if that even works I do not know..

Tach in Dash The Tach is a great addition but I also installed a 4l80 Tranny, best thing I ever did...RPM went from 3000RPM to 1850 at 55 MPH.....Will be headed your way, Andyrv in another week, driving the Humvee 403 miles to Hatteras NC to live....all that beach, Sprayed down with Boiled...

I could not be happier with the tach in the dash....I watch that more than my speedo....

I could not be happier with the tach in the dash....I watch that more than my speedo....

I have replaced all the injectors and the return lines with the braided hose...LOVE THEM.......Haven't experienced and issues so far and they sure were easier than putting those little clamps in place with my ham-hock mitts...

It is absolutely, the one best thing you can do for your Humvee

Yes 4L80 + NP242

Drive shaft length Yes, I had the rear shaft shortened.......by my drive shaft guy who came over measured it, cut it and delivered it ...but I can not tell you how much they cut off....what I can do is go out and measure it and tell you how long it is.......Raining cats and dogs but will let...

Always a work in progress... First I stuck in a 4L80 Overdrive trans in the beast........best thing I ever did...then I Replaced my 6.5 old A1 with a new(er) A2...new engine wiring harness, Ran like a mixmaster, rough idle, no power shook the whole truck......plus white smoke which would...

I took this off the injector manufacturers site......Can anyone shed light on item #2 Shut off linkage in stop position????? Fairly new A2 motor, new wiring harness.....fuel all the way to the injector....nothing to injectors themselves....DONT want to pull the pump but running out of things...

Yes sir, I believe that is correct...I could n't believe the new ones did this but after I put the old ones back on, problem resolved.....you wanta buy two slightly used rear half shalfs??? :) (Kidding) I did use the fronts with no issue but I can't say the same for the rear half shafts....I...

I did the 4l80 and a A2 motor.....4L80 is best thing you can do for a M998 it is great !!!!!!1

Yes, this is always helpful and I will always look at this as coming from my Glove compartment from here on out....:) I was looking for the step by step procedure for injection Pump removal from an A2 6.5 N/A motor which I have installed into my M998...I just can't seem to find the TM on this.....

You don't happen to have the TM on that removal and install, I am having trouble finding it....Thanks,

In my last ditch effort, I am going to remove the top of my IP off my old motor and swap them out just to see if that will make a difference.....I appreciate the suggestion.....I actually had to walk away for a few days just to keep my sanity.......I started to consider searching for those AP...