Boost Acutator Adjustment ?'s....
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From: amherst,ny
sorry had to do it but since know one is helping ill tell what i know which is what i read of this post somewhere,ive read that there is no significant gain from that adjustment (i havent done it )but the boost by pass valve is something to consider.Like i said this is info ive gained from this post maybe someone will chime in and ad another perspective goodluck!!!!
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From: Olive Branch, MS, Memphis Burb
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From: Middle Ga
The boost actuator is located on the driver's side of the intake close to the firewall. There are (2) 10mm bolts that hold it in place. One you can see in the pic and the other is on the backside of the actuator closest to the firewall. Pay attention to the slots location in reference to the bolts so you will know where you started. Loosen bolts and raise the actuator up until you see the LEVER raise up off of the STOP. Lower it back down until the LEVER just touches the STOP then tighten bolts. Now, this is the way it was explained to me but I found that set this close the boost gauge would rise to almost "0" while cruising at 80. I went back and readjusted so I could cruise at 80 with no needle movement unless I barely moved the throttle (and I mean barely). This setting was probably halfway between the stock setting and the just touching setting. The first thing I noticed was the needle jumped immediately to 10lbs and climbed from there. Stock it jumped to 9.5lbs and climbed. The total boost also increased by a 1/2lb to 1/4lb more. I also ran a tick quicker with my fastest mph at the track. The temps were warmer and there was less traction (it rained until the track opened). I think this adjustment is worth a small amount of speed. Besides, it's free.
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Joined: Feb 2001
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From: Mid West
See this thread This one is worth the time.
https://www.f150online.com/forums/sh...606#post501606
Andy
https://www.f150online.com/forums/sh...606#post501606
Andy
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From: Mobile, Alabama
ICULOKN, it may have been on your truck, it all depends on how well it was set from the factory. I got nearly 1.5#s out of mine and I know people that paid good money for a 2# pulley. What I got was free. The main thing is to not raise it to high and get it off the stop completely or the gate on the by-pass valve can stick shut and the truck doesn't run good at all at low rpms and the gate shut. All this adjustment does is make sure you are not by-passing any boost when you want to be at full boost.
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From: Richmond,VA
Originally posted by usahooters
ICULOKN, it may have been on your truck, it all depends on how well it was set from the factory. I got nearly 1.5#s out of mine and I know people that paid good money for a 2# pulley. What I got was free. The main thing is to not raise it to high and get it off the stop completely or the gate on the by-pass valve can stick shut and the truck doesn't run good at all at low rpms and the gate shut. All this adjustment does is make sure you are not by-passing any boost when you want to be at full boost.
ICULOKN, it may have been on your truck, it all depends on how well it was set from the factory. I got nearly 1.5#s out of mine and I know people that paid good money for a 2# pulley. What I got was free. The main thing is to not raise it to high and get it off the stop completely or the gate on the by-pass valve can stick shut and the truck doesn't run good at all at low rpms and the gate shut. All this adjustment does is make sure you are not by-passing any boost when you want to be at full boost.