What does " Fuel screw maxed " actually mean?

[Richie O]

Does it mean its screwed in as far as it goes?
or
Its as far as you can go before runaway?
What makes the fuel screw stop or bottom out?
Is it the rubber o ring?

[BC847]

My take is that when one says it's maxed, they mean it's set to just before runaway.

As you know, everybody's heaps are different, with that said, I've read where some have to go as far as welding an extension of sorts onto the fuel screw in order for them to get to the "Maxed" point with their mess.

Further, I think most run out of threads to bring it to a stop. I think that is way past "Maxed".

Your mileage may vary.

[Richie O]

Well I was just wondering as I got board this afternoon and before I could stop myself I pounded the tamper cap off the fuel screw and removed it. I got the collar off and cleaned up the threads. I played around with the board ready by my side. I got it to where it was not willing to go any further. I believe I came to the point in the screw where the o ring goes and thats where it stopped. It raised my idle to 1000. I set the idle back to 800 and went for a burn. It was better. EGT's went from 900 to 1200 and boost went from 22 to just over 30. I am just playing because I have new sticks comming and I will need to back things off a bit. My 89 is totally different. The fuel screw has not got to a hard or bottomed out spot. Thats why I asked.

[PToombs]

I never really thought about it! To me, it's the point you can't go any farther. Maxed could be bottomed out or the edge of runaway. Pick one.

My buddy was telling me he's going to check on getting some screws made 1/4" longer than stock. Any interest? I don't have a clue what they'll cost.

[Richie O]

I am going to have to back it out a few turns when the new injectors come. I just wanted to play around with it so I could learn. I have never played with a pump that had all the tamper caps on. I do my 89 but that has never been stock. I had another guy do my truck I sold. I was a candy ass then. Now Im just a ass.

[bgilbert]

I thought it meant the owner didn't know how to make 1st gen power.

[Begle1]

Moving the fuel control sleeve as far forward as possible is not a key to VE power?

No difference from getting sleeve travel between AFC modifications or the fuel screw, apart from one being a constant increase and the other somewhat boost referenced.

[Greenleaf]

The O ring boss is what will stop the screw.

I agree with Bill. You'd have to know him to understand what he means.

No, moving the sleave as far forward as possible isn't the key to VE Pump power. It can factor in but it's more to it than that. You know that anyhow.