Hey guys got the engine all reassembled today with all the new parts that came in, wow that was a lot of fun and learned a ton. I studyed the pump long and hard, and found a adj. that ive never read about. Im sure many of you may know about it but its sure new to me. On the front of the afc theres a 10mm bolt that you can loosen and this lets you turn this arm that moves a ecentric that lowers or raises the foot. The way mine was set was the most least fuel i of couse went the other way with it. I found this because i was in there replacing the heavy short spring with the light longer one from the tst spring kit. Its a simple esintric that really moves the foot a good ways up or down, could i suppose make a lot of differance. Any one?

 

Wow , over 80 people has read it with no responces, either everyone knows about it and its not that big of a change or knowbody has a clue what i'm talking about. Wich is it...ha ha

 

I know what you're talking about, but I'd be interested as to how much difference it would make. I'd think that adjustment is to keep the gov arm from going underneath the foot before it starts moving forward and hanging up. Give it a shot and see what it does.

 

ITs to ajust the gov. arm to the fuel plate

 

Picture below shows the normal gov arm adjustment bolt

 

Mine has a washer tacked on there so you can only put the bolt back in in one place. I thought it looked adjustable as well. . . .

 

Ya it slides back and forth a ways and raises and lowers the arm. But since the arm has an angle ground on the end it looks to me that it would adj, low end fueling. Does anyone gring the angle off the foot to make it flat, wouldnt this adj the fueling as well?

 

I would slide the AFC forward and run the smoke screw forward before grinding the foot off. I like to do everything that reversable before doing the permanent mods. You might not need to do that anyway. I hooked my AFC back up today, its all the way to the rear, starwheel is getting pretty far back, and it still billows out the smoke pretty easy. I'm gonna be going to the heaviest spring tomorrow. I think thats the stock 215 spring.

 

Sounds like good advise Tate, as for yours why is it just to smokey for daily driving or is it making it laggy or doggy on the bottom end. Do you find that overfueled on the low end does that for you- make it laggy? Im going from never owned or ran a p-pumped 12v to an all out turned up motor, will be neat to see how it all works. I did set up my custom plate about in the middle though to still have somewhere to go. Any thoughts?

 

Yep, even when it was VP'd with the Smarty, too much fuel delayed spool and just created smoke and heat. With the gutted AFC, its easy to drive smoke free, but hard to ride that threshhold of decent spool and low smoke, especially once the boost comes in. My turbo is a bit laggy, but once spooling, goes up like a rocket. So thats where the AFC is coming back in. I didn't get a chance to put the heavy spring in today, tomorrow I guess. With my current setting, it will smoke decent off idle, clean up a bit, and then once boost comes in, smokes hard again. So I need to move my housing back a bit and tension up the spring some more. I did the travel mods on the AFC, but the foot isn't returning full rearward, so I may reverse those mods and just run the standard afc.

 

I know the adjustment you are speaking of. I was looking at that when I did the AFC mod on mine and it was already explained well. IT is used to ensure the AFC arm is not under-shot by the governor arm. I would think this would be adjusted to the bottom of the stock plate.

Tate, what kind of boost numbers are you running when you get the full blast? Have you adjusted the zero boost setting? I wouldn't want to move the AFC back before I backed out that screw all the way first. Also, a medium spring should be tunable. I have mine totally loosened off and can tune out the smoke with about 10 clicks even with the DDP3's.

 

According to my FUBARed boost gauge, I'm getting around 43 psi or so, which should be right, as thats what I was getting before my boost gauge went wacky. 100 psi gauge will be on order here fairly soon.

When I had the AFC on the bench, I set the fine adjustment screw so there is about a 1/8" of a turn of preload, just so the diaphragm isn't the only thing holding the spring back. That being said, I did tighten up the spring a bunch after I set it on the bench. It seems to move to quick for the turbo to keep up. I wonder how your injectors compare to mine in terms of flow. We'll hash it out tomorrow if you come down for lunch.