Starwheel?

[JBournes]

I was just wondering how everyone has the star wheel set. Mine is at about 1 turn from the bottom so tension on the spring is light. I get 23# boost and slight smoke at WOT. Would tightening the spring a little give me more boost or less. I am very happy with the power and acceleration, but if i could squeeze out a little more i wouldnt mind. FYI i have the 16cm housing, K&N, PW'S, and my pump is turned up 10%.



JEB

 

[y-knot]

I can not say how far mine is from bottom or top. But yours sounds like it is about right, with the discription you gave. I had just recently swaped plates, turbo housings, valve springs, and installed the 3k kit. I ran it for awhile then decided to go up 3 clicks, the change realy woke the thing up, much harder launch and acceleration. I smoke some if I mash it from a start or slow speed, but not bad. Is there more left in her to get? maybe, but I'll just run here for a little while, before the next adjustment.

 

[jbolt]

JEB



The star-wheel determines the rate of boost compensation. The lower the star-wheel the sooner additional fuel will be available.



Earlier this year I made a mock-up of the AFC housing and did some measuring of spring travel to psi. You can see the charts here



I would start with a 1/2 or full turn at a time when making adjustments and then fine tune from there.



Jay

 

[Bob Beauchaine]

Mine is set at 888 lb ft of torque. Oo. Oo. Oo.



Bob

 

[BushWakr - RIP]

OH BOB..... pffffttttt... ... you KNOW they only go to 886 lb/ft... .



JBournes don't trust that guy, he still doesn't know what "R" is for... .



Mine is set right at the top, two more turns and it will come off it's little post.....



Bob.

 

[Greenleaf]

I took mine out, left the spring. Don't have a problem with coppers where I live [rural Ohio]. I enjoy rolling the coal My wife has a bit different perspective :-{}



greenleaf

 

[JLEONARD]

My starwheel is turned clockwise one rev from stock. Don't know where that is in relation to being bottomed out.

I also shaved about 1/3 off of the plastic washer and rotated the fuel pin to "max".

Still running stock "pre intercooled" injectors and haven't turned the pump's fuel screw. I'm at 29 psi boost right now with a little blackish smoke at launch thru about 1500 rpm... .

East coast Jay

 

[JBournes]

So?

So will i get more boost if my starwheel is set at the bottom or if it set at the top. Im just trying to get around 25-30. Right now when i take off if i get on it i have a haze of smoke all the way through the rpm range, or if i am rolling along and mash it i get haze until i let off the throttle. So i think i am getting enough fuel or am i not? I dont want to mess with the actual pump settings, but if i could get a little more out of it just by moving my starwheel i would be very happy. So should i just take a reading where it is, then move it almost all the way to the top and take another reading. And then find out where i get the most out of it. I just see the numbers you guys are posting in the 30's and 40's and i know some of you have the PODS, but i think i should be able to get near 30 right?



JEB

 

[Greenleaf]

So???

With your set-up, you should see 30psi w/out difficulty. Your spring adjustment will only serve to increase or delay the boost pressure at which the pump achieves full fuel.



Where do you have the control cone set at and do you have full travel of the injection pump's speed control lever? This requires bending the go peddle up-wards,grinding/modifying the control cam/arm and removing the high idle speed limit adjust screw.



With a gray haze at take-off you are getting fuel to the engine but,,,,,sounds like more is available with further mods/adjustments.



When I push my go peddle to the floor,my engine screams, the transmission shifts through the gears like a top fuel dragster and a large blanket of thick dense smoke obscures the view for passing motorists/Amish buggies.



Scott

 

[JBournes]

Cone?

On the top of my cone i have nut that holds the rubber diaphram in place, I have never taken this off. I have only twisted it around trying to find the right place where it is at its deepest travel. But i cant fully see where my cone is set at. If i do take this off, by looking at it the spring and the cone should come out right? Now i understand that i need to set it where the pin can travel the deepest on it. But my question is that if i take that nut off on the top of the actual pin. Im not going to have a big mess on my hands of parts that fall out all over the place? Will the pin that guides off of the cone fall out or will it stop at a certain point. i dont want it to fall out and me have a broke truck especially on a pump i just had rebuilt. I would get an ear full about that one:-{} .



JEB

 

[BushWakr - RIP]

NO NO,,, you don't need to take the little nut off... you're doing it right just by rotating the diaphragm.

Lift it right out of the hole, and look closely at the cone. You'll see a "witness mark" were the internal guide pin has been running on the cone. You should also see that cone is offset on it's center.

Turn the deepest part of the cone/throat so that it is facing foward. This is the max setting for the cone. Carefully drop it back down into it's bore with the deep part facing forward and install the top.

Thats it... you're set. .



Bob.

 

[JBournes]

OK

Ok thanks a lot



JEB