Pump Settings With Power Wagons

[Old Smoky]

I am curious about how some have there pump set after installing PW’s. I will be installing “larger” injectors to reduce stress on my pump. If I leave the pump where it is and install PW’s, will it be any easier on the pump? Or is it necessary to turn down the power screw also? If I leave the pump set the same, with the power screw in 1-¼ turns, and the diaphragm stet to the “richest” setting, will smoke will be an issue? I like a puff of smoke, not a trail that follows me wherever I go. I could stiffen up the AFC spring to get rid of some smoke, but would I have to go so far that it would hurt performance?



My timing is now at 1. 31 mm, from 1. 25mm. I honestly didn’t notice a difference. I would have gone farther but the pump shop talked me out of it. :-{} I understand the theory of advancing the timing. When more fuel is being added it is necessary to give it more time to burn. So, advancing it further to about 1. 4mm would be better. But I don’t have another $95 to spend on this. I could just push it forward a bit myself. But I know the dangers of going too far, and don’t want to do that.



Any thoughts and ideas are appreciated.



Mike

 

[Power Wagon]

1. 3 to 1. 7 are fine. I can' believe a pump shop would tell you can't go past 1. 3 Sheesh. All they have to do is look at pump specs for various B engines to figure out they go all the way up to 2!!!







As far as the pump goes? I left the diaphragm and whatnot alone. It really never needs fiddling unless it's severely out of tune, and then you need a pump stand to get it right anyway.



After I moved my timing around and got it running really good, I turned UP the fuel screw 1-2 rounds.



When you put in the PW injectors, the idle will probably slow down. Use the fuel screw to speed it back up to normal, and it'll run REALLY nice without significant smoke, assuming you have good boost and airflow.



I hate smoke. I REALLY hate smoke. I mean, I REALLY REALLY DON'T WANT TO MAKE SMOKE. There, did I mention I don't like my truck to smoke? That's why I don't fiddle with the diaphragm, because that helps keep the smoke down, and I don't like smoke.

 

[Old Smoky]

It seems that you have some serous issues with smoke, Power Wagon. Have you ever thought of seeking professional help to deal with these feelings? LOL



Well, it sounds like my timing should be ok, just on the low end. So, larger injectors relieve a significant amount of stress on the pump, even with the power screw turned in?



Thanks.



Mike