Direct Exhaust Injection!

Jim Wahl · 11-14-2007, 06:46 PM

Could this be the way of the future? I never knew my turbo was so inefficient! This was a serious post at http://www.gmmodernmuscle.com/forums...er=asc&start=0

You can go there to see his drawing of his DEI invention and the 8 pages of hilarious reactions and remarks. Jim

Message
The Nemesis_ZR2

Joined: 05 Oct 2007
Posts: 66
Location: Cutting Jay's BREAK LINES!
Posted: Wed Nov 07, 2007 2:50 pm Post subject: Turbo Questions

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Ok. I didn't want to mention it but 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.

There are still a few things I need to work out:
1) How do I get the CFI aircleaner to fit in a way that hides this plumbing?
2) Does anyone make a V-band clamp that will bolt an exhaust header to a CFI throttle body?
3) What pinion angle should I use in my rear-end? I’m sure there will be a noticeable difference in torque output.

What do you guys think?
_________________
1 of 2,430 Gold Metallic coupes built...... #00521--15.2-- 1/4 mile run

Chris Hill · 11-14-2007, 07:52 PM

That's funny stuff! The highest flow EGR system around.

Bob Shaw · 11-14-2007, 08:58 PM

Jim,
I really don't think this is going to work, unless you can figure out a way to control the pressure in the intake manifold.
Bob

Patrick Kelliher · 11-14-2007, 09:40 PM

wow, don't forget to install a tornado and boost that up to 300% efficiency

Jim Wahl · 11-14-2007, 10:23 PM

Nah! Bob I think the real problem is getting the correct pinion angle to handle the new found torque! Manifold pressure will take care of it's self. Jim

Harry 6674 · 11-15-2007, 12:33 PM

Somewhere,somehow theres got to be exhaust so things can move. Thats right its out of every seal in the engine, dipstick!!! WOW.

Gary Smith · 11-19-2007, 03:18 PM

In construction, that's the same as a round building with no doors who's occupants are instructed to tell visitors looking for an entrance to "go around!!"

Who says a FWD can't do wheelies? (Wahl, you'll appreciate this LOL!!!)

Jim Wahl · 11-19-2007, 08:21 PM

Those are some wild wheelie bars! Yahooooooo! Jim

11-14-2007, 06:46 PM	#1
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 666 Liked 683 Times in 129 Posts	Direct Exhaust Injection! Could this be the way of the future? I never knew my turbo was so inefficient! This was a serious post at http://www.gmmodernmuscle.com/forums...er=asc&start=0 You can go there to see his drawing of his DEI invention and the 8 pages of hilarious reactions and remarks. Jim Message The Nemesis_ZR2 Joined: 05 Oct 2007 Posts: 66 Location: Cutting Jay's BREAK LINES! Posted: Wed Nov 07, 2007 2:50 pm Post subject: Turbo Questions -------------------------------------------------------------------------------- . Ok. I didn't want to mention it but 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. There are still a few things I need to work out: 1) How do I get the CFI aircleaner to fit in a way that hides this plumbing? 2) Does anyone make a V-band clamp that will bolt an exhaust header to a CFI throttle body? 3) What pinion angle should I use in my rear-end? I’m sure there will be a noticeable difference in torque output. What do you guys think? _________________ 1 of 2,430 Gold Metallic coupes built...... #00521--15.2-- 1/4 mile run __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association. Last edited by Jim Wahl; 11-14-2007 at 06:55 PM.

11-14-2007, 07:52 PM	#2
Chris Hill Senior Member Join Date: Jan 2002 Posts: 655 Likes: 8 Liked 244 Times in 26 Posts	Re: Direct Exhaust Injection! That's funny stuff! The highest flow EGR system around. __________________ Chris Hill https://ihmusedparts.com

11-14-2007, 08:58 PM	#3
Bob Shaw Member Join Date: Jan 2002 Location: Sedalia, Mo Posts: 436 Likes: 327 Liked 316 Times in 61 Posts	Re: Direct Exhaust Injection! Jim, I really don't think this is going to work, unless you can figure out a way to control the pressure in the intake manifold. Bob __________________ Bob Shaw V/SA 515

11-14-2007, 09:40 PM	#4
Patrick Kelliher Member Join Date: May 2006 Location: New Hampshire Posts: 124 Likes: 0 Liked 0 Times in 0 Posts	Re: Direct Exhaust Injection! wow, don't forget to install a tornado and boost that up to 300% efficiency

11-14-2007, 10:23 PM	#5
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 666 Liked 683 Times in 129 Posts	Re: Direct Exhaust Injection! Nah! Bob I think the real problem is getting the correct pinion angle to handle the new found torque! Manifold pressure will take care of it's self. Jim __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.

11-15-2007, 12:33 PM	#6
Harry 6674 Senior Member Join Date: Dec 2006 Posts: 589 Likes: 0 Liked 0 Times in 0 Posts	Re: Direct Exhaust Injection! Somewhere,somehow theres got to be exhaust so things can move. Thats right its out of every seal in the engine, dipstick!!! WOW.

11-19-2007, 03:18 PM	#7
Gary Smith Senior Member Join Date: Jul 2007 Location: Greensboro, NC Posts: 820 Likes: 9 Liked 132 Times in 30 Posts	Re: Direct Exhaust Injection! In construction, that's the same as a round building with no doors who's occupants are instructed to tell visitors looking for an entrance to "go around!!" Who says a FWD can't do wheelies? (Wahl, you'll appreciate this LOL!!!)

11-19-2007, 08:21 PM	#8
Jim Wahl Veteran Member Join Date: Jan 2002 Location: Central Florida Posts: 5,844 Likes: 666 Liked 683 Times in 129 Posts	Re: Direct Exhaust Injection! Those are some wild wheelie bars! Yahooooooo! Jim __________________ Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 NHRA D2 National Open Stock Champion 1982 NHRA D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association.