Join Date: Jan 2006
Location: Oly, WA
Feedback Score: 0 reviews
Re: roots blower?
Ok, here we go again.
Different words are used to describe the same parts depending on what function they serve.
A blower is used to "blow" out exhaust, and fresh air in. Not intended to raise manifold pressure, but a slight increase is inevitable. Two cycle Detroits are a good example of this. They need a blower to run, as there is no exhaust stroke.
Now this is where my memory gets hazy.
What is commonly referred to as superchargers are meant to raise manifold pressure. There are many different types. Screw types that are driven off the crankshaft via gears or belts, and take significant hp to run, and always produce a given amount of psi for whatever rpm they are turning. Centrifugal (like a turbo) that are also driven off the crankshaft. Then the traditional turbo, which I believe is actually a turbosupercharger. It is driven off exhaust gas, and amount of boost is directly related to engine load. More fuel going into the engine, bigger bang, more exhaust coming out, makes turbo spin faster, which crams more air into the engine.
Never heard of a blower feeding a turbo.....just doesn't make sense. I know a lot of old Detroits used turbos to feed the blower. I beleive, as was said, when engine speed and load was great enough to create enough "boost" from the turbo, the blower was bypassed, which reduced parasitic load on the engine, which put more power to the ground.
It's all a little fuzzy to me, but thats the way I understand it.
Back to the initial post, yes you could do it, but I don't believe you would get the desired result. If it was worth doing, someone would have done it already.
My .02 [img]/ubbthreads/images/graemlins/biggrin.gif[/img]
2006 KW W900 pulling a 4 axle Western curtain van. 550 Cat, 18 spd, and 8 axles on the ground.
2001 Dodge 2500 4x4 HO/six speed, turned the "lift pump" into a "pusher pump", like it should have been in the first place, BD brake, gauges....mostly stock though.
Various other toys, crawler, skidsteer, dumptruck, tow truck etc...