Attention: TDR Forum Junkies 
Hi Guys!
Just installed my Power Wagon injectors over the recent holiday weekend. It went extremely well and I'm thowing this post out here for a couple of reasons!
The first reason is just to share some BIG smiles with you all
!! I noticed the difference immediately! The truck comes off the line better, great mid-range and pull, even runs a little smoother. This is the most improvement I've seen from a single mod (short of an engine rebuild!!) since I've been hotroding cars, trucks, and 4x4s many moons ago!! (FTR: In addition to the PW injectors, I'm also running a BHAF - Baldwin PA2820)
Second, here's the numbers from the change: Not too much change in EGT - maybe a little higher with my foot in it. Biggest number change was in the boost - most I pulled before was 12# - now it's up to 15#/16#. I didn't do any 0-60 or quarter mile times, but the seat of my pants DEFINITELY says we have more snap in the throttle than I did before! Especially in the 30-50 MPH range. In addition, in third gear ("OD OFF"), prior to the injector change the truck would pull about 66/67 MPH max; with the new injectors the truck now pulls about 72 MPH in third - and gets there quicker for sure!!
Third, I'd just like to fill in a couple of the gaps I found in the various TDR threads I used before tackling this project. I'm not going to restate everything I did, becasue there's a couple of GREAT posts in the archive that got me about 90% there. I'm just going to fill in the areas that I had to figure out for myself and hopefull make it a little easier for the next guy!! And thanks again to the guys who went out there in the past to put this great info on the site!!
I started with an archive search for "injector installation" in the 1st Gen forums. There are 3 real good posts out there titled "Injector Installation ??Question??", "Injector Removal", and "Power Wagon Fuel Injector Installation". If you've never done an injector change before these three posts will get you real close!!
Here's my comments on those three posts:
o The biggest thing (that I didn't know going in!!) if you're just reading this and have never seen or held an injector before is that an injector is really a two part piece - the long cylindrical injector with the little ball on the side, which indexes the the injector properly in the injector bore. The threaded nut part at the top spins or turns on the injector to seat in in the injector bore.
o You definitely need some kind of slide hammer to 'pop' the injectors out. I couldn't pull mine without it - even with vice grips. There are references to making one with a nut and 6" bolt - but I couln't find a nut to fit the injector. If you can get one of these tools - do it!! So I used the good ol' 'adapt and improvise' attitude, and used two pair of vicegrips and a hammer to pop them out. One pair on the injector, one pair under the knurled nut at the top of the first, and then popped the second pair with the hammer - and bingo! out comes the injector!! Laugh but it worked
!!
o I only undid the injector fuel lines at the injector, popped the 1 and 5 valve covers, unfastened the fuel line holddowns, and gently moved them out of the way. Worked out perfect.
o I also did the swap 3 at a time - 1-3, and 4-6. I did the first three, buttoned everything up, left the injector nuts slightly loose, cranked the motor BRIEFLY twice (It'll start so shut it right back down). Tightened up the injector nuts, and she started up perfectly. Ran rough for less than 5 seconds. Did the same thing with the back 3, and I was done. Cleaned everything up with 'brake clean' and air, and no leaks!
o I used a crow's foot wrench for the injector nuts - easier than an end wrench. All the other wrench sizes mentioned in the three posts are dead nuts!
o Only thing I'd like to repeat is CLEANLINESS!!! I cleaned the entire area around the injectors before starting and kept it clean with air throughout the procedure.
o I used a half a Que-tip and a small pair of needle nose vice grips to clean out the injector bores. Didn't want to take any chances on dropping anything into the cylinders!!
o Took me 2 1/2 - 3 hours to get the job done, and I was sitting right up on the fender in the engine compartment! And don't forget safety glasses!
And that's all I have to add!!! I'll do Hope it helps someone down the road!!
Mike
PS: And one question: Why did my boost go up with new injectors? How's the turbo know to boost more?
Just installed my Power Wagon injectors over the recent holiday weekend. It went extremely well and I'm thowing this post out here for a couple of reasons!
The first reason is just to share some BIG smiles with you all
!! I noticed the difference immediately! The truck comes off the line better, great mid-range and pull, even runs a little smoother. This is the most improvement I've seen from a single mod (short of an engine rebuild!!) since I've been hotroding cars, trucks, and 4x4s many moons ago!! (FTR: In addition to the PW injectors, I'm also running a BHAF - Baldwin PA2820)Second, here's the numbers from the change: Not too much change in EGT - maybe a little higher with my foot in it. Biggest number change was in the boost - most I pulled before was 12# - now it's up to 15#/16#. I didn't do any 0-60 or quarter mile times, but the seat of my pants DEFINITELY says we have more snap in the throttle than I did before! Especially in the 30-50 MPH range. In addition, in third gear ("OD OFF"), prior to the injector change the truck would pull about 66/67 MPH max; with the new injectors the truck now pulls about 72 MPH in third - and gets there quicker for sure!!
Third, I'd just like to fill in a couple of the gaps I found in the various TDR threads I used before tackling this project. I'm not going to restate everything I did, becasue there's a couple of GREAT posts in the archive that got me about 90% there. I'm just going to fill in the areas that I had to figure out for myself and hopefull make it a little easier for the next guy!! And thanks again to the guys who went out there in the past to put this great info on the site!!
I started with an archive search for "injector installation" in the 1st Gen forums. There are 3 real good posts out there titled "Injector Installation ??Question??", "Injector Removal", and "Power Wagon Fuel Injector Installation". If you've never done an injector change before these three posts will get you real close!!
Here's my comments on those three posts:
o The biggest thing (that I didn't know going in!!) if you're just reading this and have never seen or held an injector before is that an injector is really a two part piece - the long cylindrical injector with the little ball on the side, which indexes the the injector properly in the injector bore. The threaded nut part at the top spins or turns on the injector to seat in in the injector bore.
o You definitely need some kind of slide hammer to 'pop' the injectors out. I couldn't pull mine without it - even with vice grips. There are references to making one with a nut and 6" bolt - but I couln't find a nut to fit the injector. If you can get one of these tools - do it!! So I used the good ol' 'adapt and improvise' attitude, and used two pair of vicegrips and a hammer to pop them out. One pair on the injector, one pair under the knurled nut at the top of the first, and then popped the second pair with the hammer - and bingo! out comes the injector!! Laugh but it worked
!!o I only undid the injector fuel lines at the injector, popped the 1 and 5 valve covers, unfastened the fuel line holddowns, and gently moved them out of the way. Worked out perfect.
o I also did the swap 3 at a time - 1-3, and 4-6. I did the first three, buttoned everything up, left the injector nuts slightly loose, cranked the motor BRIEFLY twice (It'll start so shut it right back down). Tightened up the injector nuts, and she started up perfectly. Ran rough for less than 5 seconds. Did the same thing with the back 3, and I was done. Cleaned everything up with 'brake clean' and air, and no leaks!
o I used a crow's foot wrench for the injector nuts - easier than an end wrench. All the other wrench sizes mentioned in the three posts are dead nuts!
o Only thing I'd like to repeat is CLEANLINESS!!! I cleaned the entire area around the injectors before starting and kept it clean with air throughout the procedure.
o I used a half a Que-tip and a small pair of needle nose vice grips to clean out the injector bores. Didn't want to take any chances on dropping anything into the cylinders!!
o Took me 2 1/2 - 3 hours to get the job done, and I was sitting right up on the fender in the engine compartment! And don't forget safety glasses!
And that's all I have to add!!! I'll do Hope it helps someone down the road!!
Mike
PS: And one question: Why did my boost go up with new injectors? How's the turbo know to boost more?
