whoa, SC+Turbo setup
 

man.. I really doubt this is possible to run properly, the image speaks for itself.
http://members.shaw.ca/Brent_nowell/...ages/uhhuh.jpg

My friend showed me this earlier and I was thinking about it alot.
Can you even compress air twice? if you can with that setup, wouldn't it detonate most indefenitly?

Is this even possible to run reliably? You could have the low end with the high end for power.. or could you?

you guys are the experts, so tell me what you think ;)

I personally don't think it would work at all.

You can compress air but it heats like a sob... and I see no intercooler....intake temps are going to crazy.

There is an sti somewhere around here that is running sc and turbo... I saw it at a car show, looked pretty impressive.

you can have it run somewhat like a "march super turbo," one of the few factory cars fitted with a "twin blower," on that the supercharger provided the air up until the turbo kicked in, then exhaust gasses would flow only to the turbo.

if the above setup worked something like that, you wouldnt see such extreme temps, and get a good spread of torque through out the rev range.

yea but how do you prevent air from going through the supercharger once the turbo kicks in?

This particular setup isn't configured to do that. I would guess that the pictured setup would work, but intercooling would certainly be an issue. If one ran alcohol or water injection to keep the temps down it might be feasible, I suppose.

You could have an electronic clutch set up for the SC. Once you reach a certain RPM then the clutch could "disengage" the SC and the turbo would take over fully spooled and ready to carry on all the way up to redline. Just a thought. But it does make sense to me. I know that HKS did a "twin charged" Integra about 3 years ago. If you were to look through www.hondatech.com you would probably be able to find something about it. It looks pretty cool though.

Zach

yes you can lancia delta back in the day group b rally car had this.

http://www.supercars.net/garages/PeP/76v2.html

one of the best rally cars made ever!

usually it is a SC forcing into a Turbo, this is an interesting approach.

i remember watching that car rip it in the safari rally when i lived in kenya talk about power and handling!

That's not a running motor.
It might be just a display item just to impress passer-by'ers.

I think that's a Jackson Racing SC.
If it is, it has a vacuum actuated bypass.
I would think when the turbo gets into boost, the SC would just bypass.
It is not compound boost.


-Ted

That set -up would actyally work, but they are missing a water-to-air cooler in the intake pipe. It works like this: The S/C would boost down low, and also spoole the turbo quicker. Then the turbo would push against the S/C rotors and help then spin and also possibly add more psi to the equation. The car would have a strong top end charge as long as the S/C was not restricting the turbo flow, which shouldn't because the S/C usually sucks in air and still makes good top end boost, but now the air is being forced into it and it should help it be even more efficient up high.


Sorry for the long last sentence..... =)

Sure it's possible. HKS use to even sell a kit for MR2's called HKS Twincharge that used a supercharge and turbo. Not really worth all the trouble IMO, but neat none the less.

i want a lancia delta damn it!!

yes it would work, but I have seen it done more often the other way arround the SC blowing into the Turbo and then the turbo to intercooler and on into the engine.

U still don't understand how the air will bypass the SC once the turbo spools.. Is it a seperate pipe?

there would be no "real" need to bypass the SC. as long as it is well sized

i though toyota had one

like a 4agze or something

found it.........

not many of them but the 16V 4AGE was twin charged as an option

Keeping the SC active and in-line all the time isn't a very good idea.
The SC rotations are fixed via the belt and the pulley sizes.
Blowing onto the SC doesn't make it spin faster.
It's still working against the pulleys and the belts which mechnically couple the engine crank and the SC together.



-Ted

Just if anyone is interested

http://www2.msstate.edu/~sgn1/MR2/mod/gsa.htm

http://www.club4ag.com/faq%20and%20t...ifications.htm

http://www2.msstate.edu/~sgn1/MR2/engswap.htm

HKS did it by a "bypass" route.

350hp + out of a 1.6L engine is awsome.