Jag
In case you missed it - - -
Thread Starter
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Post Fiend
Joined: Sep 2004
Posts: 5,231
Likes: 1
From: Near Fresno, California
In case you missed it - - -
This was posted in the member's only forum - Do you guys have any comments?
"I was thinking about turbo charging my Vette. I got to thinking about it and how in efficient even turbos are (compressor efficiencies of about 80% at best).
Since a turbo's function is to pressurize incoming air and force it into the upper motor, and turbos are driven by high pressure exhaust gas created from the combustion process, couldn't I just bypass the turbo altogether and route my headers back into the throttle bodies?
Since I have CFI, I could balance the DEI (direct exhaust injection as I just coined it) by feeding one header into each throttle body. Yes, the charge air wouldn’t be that cold, but it would be under a hell of a lot more pressure.
I attached a quick sketch below: "
"I was thinking about turbo charging my Vette. I got to thinking about it and how in efficient even turbos are (compressor efficiencies of about 80% at best).
Since a turbo's function is to pressurize incoming air and force it into the upper motor, and turbos are driven by high pressure exhaust gas created from the combustion process, couldn't I just bypass the turbo altogether and route my headers back into the throttle bodies?
Since I have CFI, I could balance the DEI (direct exhaust injection as I just coined it) by feeding one header into each throttle body. Yes, the charge air wouldn’t be that cold, but it would be under a hell of a lot more pressure.
I attached a quick sketch below: "
Postmaster
Joined: Aug 2003
Posts: 4,172
Likes: 1
From: Oakdale,Ca.
Does he want the long or short version of of why it will not work?
I don't want to sound like an ***, but
There's no intake, exhaust pressure are generally less than 1-psi (= no boost).
All he's really drawn is a way to creat extreme backpressure and eliminate air intake.
I wonder if the OP realizes there are two parts to a turbo? i/e the exhaust spins one side, the other side (going into the intake) spins to create the boost?
Also, I think turbos are more efficient than he's posted...belt driven superchargers/etc, loose 20-25%, the only thing "wrong" about turbos is the initial lag until it gets spooeld up to start making boost.
I don't want to sound like an ***, but
There's no intake, exhaust pressure are generally less than 1-psi (= no boost).
All he's really drawn is a way to creat extreme backpressure and eliminate air intake.
I wonder if the OP realizes there are two parts to a turbo? i/e the exhaust spins one side, the other side (going into the intake) spins to create the boost?
Also, I think turbos are more efficient than he's posted...belt driven superchargers/etc, loose 20-25%, the only thing "wrong" about turbos is the initial lag until it gets spooeld up to start making boost.
Thread Starter
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Post Fiend
Joined: Sep 2004
Posts: 5,231
Likes: 1
From: Near Fresno, California
Bingo, you got it!!!! 
10 members of the Chevy forum forgot that, and several members of the FTE supporter forum missed it too -
I think he posted it as a joke, but most people missed the punch line!
It was worth a good laugh!!!!
Things were too quite and slow in here.
10 members of the Chevy forum forgot that, and several members of the FTE supporter forum missed it too -
I think he posted it as a joke, but most people missed the punch line!
It was worth a good laugh!!!!
Things were too quite and slow in here.
Elder User
Joined: Oct 2005
Posts: 907
Likes: 0
From: Citrus Heights, CA
Originally Posted by 3Mike6
Punchline?
Okay, spell it out for me.
Okay, spell it out for me.
Thread Starter
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Post Fiend
Joined: Sep 2004
Posts: 5,231
Likes: 1
From: Near Fresno, California
Originally Posted by 3Mike6
Punchline?
Okay, spell it out for me.
Okay, spell it out for me.
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Post Fiend
Joined: Jan 2006
Posts: 20,589
Likes: 2
From: Charlotte, NC
I thought the first guy in the Chevy forum called this genius a stupid MF.......He didn't elaborate WHY....He just called him that name......
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Lead Driver
Joined: Sep 2003
Posts: 5,241
Likes: 3
From: Other side of the sunrise
Originally Posted by WillyB
Bingo, you got it!!!!
10 members of the Chevy forum forgot that, and several members of the FTE supporter forum missed it too -
I think he posted it as a joke, but most people missed the punch line!
It was worth a good laugh!!!!
Things were too quite and slow in here.
10 members of the Chevy forum forgot that, and several members of the FTE supporter forum missed it too -
I think he posted it as a joke, but most people missed the punch line!
It was worth a good laugh!!!!
Things were too quite and slow in here.
Now that I've modified my 460 with a sawzall, cutting torch and mig welder.
Thanks allot Clint. Sure coulda spoke up a little sooner.
Lead Driver
Joined: Sep 2003
Posts: 5,241
Likes: 3
From: Other side of the sunrise
Yea Clint. I was thinking of plumbing in a copper line into the exhaust re-breather from an oxygen bottle located in the bed of the truck. A little ether induction might help the combustion process a little too, I suppose. Might be kind of hard keeping the plugs from blowing out though.
Last edited by olfordsnstone; Nov 17, 2007 at 05:28 PM.