question on injectors

[Nordby]

It was probably one of my comments that they didn't feel as smooth.



I'd take that as one data point, and see if others feel the same, or if they are seeing smooth operation through the powerband.



I really could have a mismatched injector (I suspect it even), or timing off, or a weak cylinder, or ????



So other POD owners, is your experience as smooth as Power Wagons or stock injectors? Or is your experience that the PODs are a bit harsher and rougher?



thanks

jon.

 

[formula]

I did not notice any difference in the smoothness of the engine at all after I installed my PODs, at least as far as idle and part throttle are concerned. For a while I was running stock timing so it was a bit smoky, timing is advanced now and smoke is minimal except for WOT. When I first installed the PODs I left the pump where it was. Wow, lots of acceleration smoke, got pulled over because the cop thought I was doing a burnout . Anyway, after adjusting the AFC this problem is gone. As far as the added performance..... The throttle response and drivability is waaaayyyy better. Very little turbo lag, cruise at 80mph noooo problem, drive around town with foot barely on throttle. But the biggest difference is when I romp on it now the power hits hard above 2000rpm. It really sounds sweeeeeet when she gets wound up now The stock injectors sort of lost power in the upper rpm's. Also, as far as my experience goes, adjusting the pump is a must, be it for smoke, EGTs or power.



SP

 

[dan brooks]

Jeremy - Thanks, that was exactly the info I was looking for. I'm not planning on doing too much to the truck - exhaust, BHAF, 16cm housing... and now probably the PW injectors. I figure that will be more than enough power for hauling my Palomino slide-in and towing my Jeep... . and still get better gas mileage than my F150 did empty.



Right now I'm getting a big puff of smoke at start-up (cold or hot), a little smoke at hot idle, and killing off mosquitos in a hundred mile radius at WOT. I'm not sure if this is normal for stock with the 21cm housing, or if there is anything I need to check.

 

[DPKetchum]

My 93 has never smoked before or after any of the mod's I did. It has always smoked a little on hot restart. It basically stayed the same before mod's and after. My pump was timed and the power screw turned about 3/4 of a turn. Brought idle up a hair. Mine looses power upper end,noticed yesyerday on interstate I ran wide open briefly that it pulls boost to 19psi and then it starts to fall off. At 80mph its19psi and then at 82 mph or so it starts dropping and egt went up some. Figure its leaning out?Due to lack of fuel. Now thats with 4. 10 gears. My truck came with 3. 54 and did'nt pull horse trailer worth a damn in n. ga. mountains. It gutted from a stop and gutted up any kind of incline. Had a 360 2wd gas that pulled better. I added bank's stuff,think we timed pump correctly and then added 4. 10 gears. It pulls better but on long incline with trailer it still slows up floored to 40mph unless your running 72mph to start ,then it honk's. Don't like pulling animals etc at that speed. Try to stay around 65 or so then it really dosen'nt have much guts. No trailer it pulls great and before and after mod's is a huge differance. Used a friends 98 24v 5 speed no mod's will pull circles around mine. It loafs with 9600lbs. Mine strains.

 

[Case500D]

Open it up

Hi Dan,



You have a good idea in going with the BHAF. I am considering one myself over the K&N. You might consider a couple of things to clean up the idle and WOT smoke. I don't think you can get rid of the start up smoke. I would go with a 3. 5" or 4" exhaust system, or at least a muffler with less back pressure in the stock system. A 16 cm housing will also clean up some smoke, especially at lower RPM. The cheapest smoke reducer you can do is bump your pump timing up. I moved the pump on my truck towards the engine about1/8". This is really close to 1. 45 mm timing. You can do a search on all of this stuff to see what the other guys have done. I am getting plenty of fuel with the stock pump settings and the PW injectors. I just need to get it all burnt effeciently. I would like to adapt a Banks twin Ram intake over to my truck. To increase the pull on the hills, I turned the high RPM up on my truck to 2950-3000 RPM with no load. BTW, if you don't have gauges yet, you would be better off to make the investment in them so you can do a good job of BOMBing. If there is anything I can help you with, drop me an e-mail or PM.



Jeremy

 

[AlK]

Dan,

I am also running the PW injectors and in the Greater Vancouver area we have to go through air care. Absolutely no problem getting through air care. From the stock injectors to the PW's the only difference that I noticed immediately was the big increase in power and response . After I installed the injectors I had Piers set the timing at 1. 4 and increase the max rpm to 2900. That change made another noticeable difference in response and power.

---

Al

 

[dan brooks]

Jeremy - Thanks again. This is my first diesel so I don't know how much smoke is normal from a stocker, but it runs great and still gets 17-19 MPG around town, and 21-22 on the freeway. Even with the camper and towing my friend's small boat it got a little better than 16 MPG, so I would assume that everything is fine.



The gauges are also in the plans, probably at the same time I do the 16 cm housing for convenience. Just need to decide where I want to mount them - on the pillar or on the dash - and then whether I'll go with the dual EGT/boost gauge with a trans temp gauge, or just do seperate gauges..... decisions, decisions.



Al - Thanks for the reply. Looks like the PWs are definitely the way to go, for me anyway.

 

[DieselBuzz]

Nice Truck

Dan,

I think you should re-organize your photo album and put the truck first. What did you do hold up someone's grand father and steal the truck? That is a very nice truck! I doubt that there are many other 1st with mileage lower than what you have.

I'd say keep the original parts just in case you want to go back to stock.

Art:-laf

 

[dan brooks]

Thanks, Art. Yeah, it's probably time to shift the albums around a little..... still have the Jeep but the Ranchero is gone(sold it to buy the truck).



Actually, I think it was someone's great grandfather that I held up. I bought it from the 85 year old original owner (purchased in Arizona... . no signs of rust).



I really lucked out finding this one. I looked at a ton of garbage in Tucson and had almost decided to head to Texas to look for a truck, but saw this one advertised in the Phoenix area. When I pulled up I thought I might have found a good one... . once I pulled the creeper out and slid under I knew it was - all the factory markings and stickers were still clean and intact, and the only sign of leaks was from a missing oil drain plug.



I did have to clean up some of the wiring on it - there were so many lights it looked like a Christmas tree - and spent some time "defossilizing" it. Now I'm just trying to get used to the "normal" characteristics of a diesel. Prior to this, the only diesel I had ever driven was an Olds Cutlass..... talk about a worthless POS.

 

[BushWakr - RIP]

Hey Dan,



The POD's are not a rough running injector. I think that comment may have been taken incorrectly or perhaps, too literally.

The smoke issue is one that can be significantly moderated by pump tuning/tweaking. It really depends on what you want from the truck.

Trust me here, sooner or later you're going to want to ". . see what the ole girl can do... " and you'll do some experimenting... when that time comes you'll be glad you put them in.

I went thru our version of 'emissions testing' here recently. I did have to make some serious 'detuning' changes to clear, but made it. I felt bad for the guy running the test. He'd give it more throttle, then more throttle, (responding slow to low boost) then suddenly when boost started so did the fuel..... :-laf :-laf :-laf

He ran the acceleration curve out of the band every time. Poor guy.

You should know that they do make some smoke/haze at idle in most cases. You can tweak that, but in my opinion, and my opinion only, never totally eliminate it. It's the nature of these nozzles.

So is a nice jump in HP...



bob.

 

[dan brooks]

Thanks, Bob. Even though the rough running may have been an isolated case, for what I'm trying to accomplish the PODs may be overkill. I'm sure everyone said the same thing at the start, but I really don't plan on doing too much to the truck. I've had several vehicles over the years that I've modified for more power, looks, handling, etc. , but this one I'm keeping pretty tame. I don't want to lose any reliability, and every vehicle I've done anything substantial to in the past has nickle-and-dimed me to death and turned into a major headache... . my Jeep included. I no longer have the desire - or patience - to squeeze the max out of an engine.



I'm glad to hear that the smoke at idle is normal - it really isn't bad, I just happened to have the passenger side mirror turned down coming home from work the other night and noticed it in the headlights of the car behind me. I've been kinda playing around with the throttle to see how much it smokes - it's definitely more noticeable in traffic at night.



The emissions testing used here is a loaded dyno test, and the standard is 30% opacity max - not sure how that compares to the testing in other states. The guy I bought the truck from has every emissions certificate since the truck was new, and it's always passed with flying colors.

 

[BushWakr - RIP]

CopterDoc,



I think there is something just TINY bit off on your numbers here.

Guys, look close at those numbers in the first post by CopterDoc will you, see if this strikes you as a BIT off too.

With your mods you should be seeing higher boost.

With my system in stock trim, had I gone 1 1/2 turns PAST the lock collar position I'd be making tons of smoke, high EGT's, and alot more boost. As it was I was 1/4 turn away from the collar (not past it), full AFC, starwheel down 1/3 turn, and smoke screw in 1/2 turn and that made 18 psi min.

Right now I am about 3/4 to 1/2 turn away from the lock collar, and starwheel at about 8:00 position PRE-STOCK, AFC full, smoke screw backed right out, I can hit 36-37 psi no problem. Also reach around 1100*F if I pull on i hard up a good grade.

So even with larger nozzles, my settings are milder than yours with stock nozzles.

It just seems a bit low to me is all... . any thoughts guys?? mark, what do you think here??

'Doc, I'd suggest you do not go by "... . 90 degress... " reference on the AFC... take it out and visually set it. Mark your max/min positions on the top of the AFC diaphram metal plate with a marker so you can set it without removal next time too.

The only time you should need to remove it again is to check the fueling pin operation, and to adjust starwheel.



Bob.