New injectors are in

[JLEONARD]

Put in the Bully Dogs today!

Didn't get a chance to really try them out, but I do feel more low end grunt. Engine also runs a little smoother, and the idle is up about 50 from where it was, but at about 850, I need to make an adjustment.

I'll get a chance to put her thru the paces tomorrow on my way home from work, and I'll report how she does. These are the 50 hp injectors, but Bully Dog said I'd only see about 20/25 because I have a non-intercooled engine.

The job went smoothly, no problems other than trying to find the return line washers afer they fell off the fuel lines. I know I'm the only one who has ever played "washer,washer, who's got the washer!" Also had to "dent" the adapter bushings so they stuck to the injector tips so I could get them in the hole without falling off.

:-laf

The job was made easy with the simple injector puller I made last week at work. I simply welded a 12mm x 1. 5 nut (injector top thread) to a 3/8-16 nut. Add a 12 inch piece of 3/8 threaded rod (I have a bunch at home), another 3/8 nut, and a drilled out piece of bar, and you have a puller. I started with a shorter piece of rod, but this length gets the injector out in about 5 whacks... also is short enough to get number 6. Pic in my reader's rigs.

I also replaced the lift pump while I had the system open.



The old injectors, originals I'm sure, ran good and strong, but they were pretty well cruded up. I'll post some pics of these rusty, carboned up things.



Thanks Pastor Bob , for the tips... . the advice that is.



***edit:Hey, what did the prostitute say to the leper? ... ... . ... ...

sorry I just Had to take that end part out... ... Pastor Bob



Jay

 

[drturf0]

glad all went well Jay.

 

[JLEONARD]

glad all went well

drturf0

Thanks.

Oh, to all this is the guy who I bought the injectors from. Thanks much. Glad I can trust the 1st gen people who use this forum!

By the way, there were more parts included from drturfo that I thought I would receive. Mainly the adapters that I needed for my early non-intercooled engine. And the injectors were in as good a shape as he said they were!

So what are my conclusions??

1st gen dudes rule!! And they are honest. What more can I ask for?

Jay



ps hey drturfo... . take the Bully Dog thing out of your signature!! Ha ha, I noticed that

J

 

[drturf0]

Originally posted by JLEONARD





ps hey drturfo... . take the Bully Dog thing out of your signature!! Ha ha, I noticed that

J [/B]

good eye Jay, took care of that before i got penilized any HP ,and thanks for the comments, us 1st GEN. guys have gotta stick together ya know.

 

[JLEONARD]

us 1st GEN. guys have gotta stick together ya know.

You know I always heard the old saying... .



A group that comes together

sticks together!!



Jay

 

[Bob Beauchaine]

Good to hear Jay! Keep us posted on how well they are working.



Bob

 

[JLEONARD]

Just got back from a lunchtime "performance check"

Engine definately pulls harder and smoother in the low to mid range. Tough to tell on the upper end, but I think I gained about 1 # max boost... could be more, but, well, I sorta ran outta gage

I did manage to see 1200 on the pyro on the top end of my bonzai run. . never saw that before.

Mashing the pedal at low end gives a nice small shot of smoke, but it quickly clears.....

I like em

 

[drturf0]

glad hear, and glad you like'm

 

[JStraw]

Hey Jay, You wouldn't happen to be interested in selling one of them injector pullers would ya? cause I'd be interested.

 

[drturf0]

JStraw, you can make you one for about 2 bucks,

1- 14mmx4. 5 inch bolt

2-14mm nuts

1- heavy deep socket

 

[JDMills]

Jay,

I am curious (still a bystander in diesel higher performance exercises), why a non-intercoooled truck does not make as much power as the injectors adverise.

Is it because we cannot turn up the fuel as much, as the injectors will allow?

Or is it simply a result of a higher intake tempeture, reducing density, thus power?

Or may be some thing else.

Now that I am on this line of questions, how does the 'stock' settings of a injection pump on a non-intercooled truck compare to a intercooled one in terms of volume and durration? (excluding timing changes)

If there is a good thread for me to read to start figuring this out on myself, I would love to read it, just dont know what to search under. .



Jason

 

[BushWakr - RIP]

The non I. C. trucks had a couple things different about them...



No intercooler

Higher pump timing

"Richer" injectors

Larger injector bodies and subsequently, larger injector holes in the head to accomodate them.

This particular item cause possible cracking of the head in and around the injector bore and the valve guides.

Since the injectors in the 89 - 91. 5 Non I. C. trucks was a bit bigger or richer, they perform much like a 185 upgrade injector. That in turn means that there is no sense putting in 185's... and the larger POD injectors will raise the HP less than they do in the 91. 5 - 93 year trucks...



Does that make sense???? It's late...



Pastor Bob...

 

[JLEONARD]

You wouldn't happen to be interested in selling one of them injector pullers would ya

I had to chuckle because I saw one for sale yesterday in the TDR classifieds for $125, and like drturf0 said it only costs a couple bucks to make your own. I would use something longer than 4 1/2 inch though... the first one I made was about that length and you can't get any force... when I put the 12 inch piece of rod together... that really developed some pulling force.



To add to what Bob said about the non IC engines... the eccentric fuel pin is also different in our pumps. . they have a deeper cut to allow more fuel flow. I know when I tried out one of those DD performance fuel pins it turned my truck into a dog...



I think that is something that the IC engine guys could try... . put in a fuel pin from a non-IC pump. Should be a relatively cheap part. I forget what number mine had on the bottom. .



Jay



Just searched the archives... my pin is a number 75

 

[JDMills]

Thanks Bob, and Jay,



That answers a couple of questions I have not even thought to ask, as well as getting a better understanding of what changes were made.

Jason