I was bored in school today and got to reading one of my friends ricer magazines. I saw a boost controller for turbos. Is there any way we can get a boost controller on the L's to where you could put a 6lb pulley on the truck but you could dial in any boost you wanted between 0-14. Is this possible or am i just dreaming. I guess it would have to have some type of valve on the boost bypass where it dumps the slight amount of boost to keep it down until you wanted the max boost. worth a try asking

 

dunno but that would make a larger pully more streetable. Good ? maybe someone will know

 

I remember this being brought up before, but I can't explain the reason for us not being able to have them... ill try and dig up that post.

-Mike

 

What would the logistics of controlling the mechanical spinning of the blower itself entail? It seems we've been speeding and slowing down the blower via pulleys since it's a roots-type so how would we do it electronically with a boost controller?

Now if it was centrifugal...

 

you could make it like a a/c compressor

large magnetic coil

 

i believe its because boost on our trucks are controlled by the pullies, while turbos are controlled using by pass valves and wastegates. when the pressure builds up to high the wastegate lets some of it out, and u can control the wastgate i believe by computer. A S/C thats not centrifugal has pullies which allow the blower to spin only so much, yet on the turbo, the exhaust keeps coming out faster and faster as u go faster. OK i think im right, i dont know, its late and my g/f just broke up with me before prom, 18months with her, and she went to some loser sophmore, sorry had to vent that out through my wastegate, lol. Sorry if i cant help much.

 

I was thinking it could u se the boost dump valve to regualte the boost level.

 

Sorry to hear... You should tell her to KISS your wastegate

Otherwise, I see where you're coming from, LateModel. However, I think that the boost dump on our trucks is an all-or-nothing affair... As in, dumps all boost, or none of it. Where, the turbo's wastegate is designed to bleed. That would be an excellent idea, though!

 

I wonder if there is a way to make it bleed?

 

What about if you install a pulley that makes 20lbs of boost and then install a wastegate between the blower and the throttlebody. You would need an actuator that gets the boost signal from the boost controller and opens the wastegate when your preset boost level is acheived. The boost controller would get the boost pressure from right before the throttle body. Here is an example:

-blower makes 20lbs of boost
-boost controller set at 15lbs
-boost controller reads boost pressure and sends a signal to wastegate to open when 15 lbs of boost is reached, bleeding off the excess boost.

Just an idea.... wonder if it would work?

 

The blower has a rotational limit. If you put a pulley on it that would spin the blower fast enough to create 20 lbs of boost, your blower would grenade quickly.

 

The truck already has a boost controller.. Mine is under my right foot ....

 

What about an aftermarket blower? Those make more than 20psi, right?

Just a theory... do you think it may work if the blower was built to handle 20psi?