why do you guy's like a turbo vs a centrif Supcharger?

yes and no, but rmostly no, no joke. A centrifcal unit uses a V belt. Sorry, I thought that was the charger we were talking about. And yes, I understand that the more power your making, the more power loss there will be in turning the charger.

How many guys here running 24 psi on the street? Come on now, hands up!!!

I busted up the quote to stop you right there. Your math states otherwise against free power.




The speed of the impella is moving faster than the exhaust gas is pushing it though it takes exhaust gas to move it?
Sorry, the only time I see this happening is under deceleration.
I do notsee expandinggasses being a huge or little factor in movingthe impella faster than the gasses themselfs turning the impeller.






As is allways the case, LOL, yep, very true. Pressure ethier way is good.




OK. (I just don't beileve everything I read.)


Hey Joe!

Imagine a turbo or centrical super charger on a stand next to the engine being dyno'd. This unit is not hooked up to the engine, but was unsed prior to dyno the engine for the base line power graph. The unit being used. It has a seperate power surply to operate, but yet it is surplying the engine with boost. This will compare the engine under boost without the engine turning the supercharger or pushing exhaust gas to turn the turbo.

Take these results and compare. Then you'll see the loss between the two units and the units themselfs.


Otherwise wasted energy. I ot that.


Sorry, missed this one.



It's not wanting to understand, I just do not beileve a turbo is an actual "FREE" HP maker.

Ittakes power, some sort of power to turn the turbo. It doesn't magicaly spin by itself. Since the exhaust gasses spin the turbo, (which otherwise would have been wasted) it takes a certain amount of pressure to spin the impeller. This pressure is now creating back pressure. Power loss!

And of course, no hard feelings. Sending you some Advil and a cool drink ... ;)

Just dont think I'm anti turbo!

Ok... So I have thought about it and there is something called a Hot Flow Bench that turbo manufacturers will use to see what kind of air a turbo will move at set pressure differintials by doing this they can tell you at what psi it will make the coolest air charge and how much boost it is capable of to check its effeciancy and anti surge capabuilities, I guess in theory you could do this to a N/A motor to simulate boost for a turbo and then the same for a blower on the same motor, All things being the same open headers on a dyno there should be no back pressure for either motor. With that said, At a 1:1 pressure differntial the turbo motor is making more power with its spent energy than its using to make it And a blower motor makes alot of power only using some to produce it either way your making more power than you started off with and making alot more that is using to make it. I personally like turbos better but dont have anything against blowers either, If blowers were not so outragiously priced I would have one by now ( I hope china is listining ) In my first hand exsperiance turbos come on alot harder (tourqe wise ) than a blower of the same boost level most blowers keep coming with the rpms where a turbo comes on early and stays there. Sorry if I seemed bent out of shape but I feel like were beating a dead horse with the whole back pressure thing.

Joe,

Sorry about the spelling but my computer at work wont let me download the spell check.