Isn't a little boost better than none? Couldn't this be done

[Anonymous]

I asked a question a while back about how to turbo and such and I think I have a much better grasp on the concept...it's not rocket science.

The general concensus is pump all of the exhaust through the turbines and get it as close to the head as possible for faster spooling...right?

My question is though if say someone added a turbo that only used SOME of the exhaust and wasn't really close to the head, would the boost gained still be benefitial even though it would be less efficient that the ideal setup? Since we are talking about wasted exhaust energy anyway, isn't a little boost better than none (assuming the headache and cost of the install is not a factor)?

WOuld it also be possible to pump the pump the turbo air into carb hat that ALSO was tied to say a ram air setup or would that just lead to too great a loss of pressure. I ask because I don't know....maybe only using some of the exhaust doesn't yeild enough air flow to suit the motor to begin with.

I'm sure you can read that I'm fishing for a feasible way to add a turbo, even for some small gains, without completely scraping my existing exhaust setup.

If it's not really do-able, then I may be back to looking at a supercharger. The gains of a SC vs the drag it puts on the motor might be close to what a "partial" turbo as described about would yield anyway. I bet I could use a power steering bracket setup for the 200 to fab up a mount. I'd just need to find an SC that wouldn't break the bank!

 

[XFlow_Fairlane]

you could run a turbo off half the cylinders but then it will spool like crap and have insane lag. if you have a welder and a sawzall then I think a turbo is easier and cheaper. in the end I will have $20 in my manifold, $100 in turbo, $30 in an intercooler and all that is left is a carb now. Oh I found a nice cast bonnet for $30 too.

 

[Asa]

how are you planning on only using part of the exhaust?

you could run a turbo off half the cylinders but then it will spool like crap and have insane lag.

you forgot that it would add all sorts of stress to the three cylinders that are trying to power the rest of the motor (as Bryce knows, because it was covered in his last thread 'bout this)

i think with the right blow off valve, you could limit it to a certain PSI... and yes, you can set the turbo farther away, but seriously, i think you would do better with just getting a setup that works correctly, and selling your headers to recoup part of your loss

no, you wouldn't be able to tie a forced induction system into a ram-air system, you could have the ram air acting as a cold air intake, but after the charge goes out of the turbo, you have to pipe it to the carb or else it will just vent to the atmosphere and give you no gains

if you really don't want to get rid of your exhaust, get a supercharger, and ignore that crap about parasitic loss
yes, it is there, but as long as you're making enough power to overcome it, it's a stupid argument. high pressure oil pumps cause parasitic loss too, but you never hear anyone complaining about them

half-assing a forced induction system is just asking for trouble, and looking for small gains with forced induction.... it's just my opinion, but it sounds sorta silly

 

[Does10s]

Bryce,
If you want to keep your existing exhaust system why not try and put the turbo back between the fuel tank and rear end? The F-body dudes have used this method with some success.
But to use just some of the cylinder's (lets say 3 of them) exhaust to turn a turbo then expect it to flow enough air to supply pressure to all 6 cyl. just isn't feasible.
Although I don't think it's ever been done....so what the hell.....go for it!
Later,
Will

 

[XFlow_Fairlane]

you could mount the turbo on the drivers side with a crossover pipe. mount it under the back seat area for super stealth

 

[Anonymous]

Yeah, and the long pipe back to the intake manifold will act as a half-assed aftercooler as well!