C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Single turbo Lt1 headers

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Old Feb 8, 2004 | 12:13 PM
  #21  
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Default Re: Single turbo Lt1 headers (Flareside)

Sounds like a great plan. What's the deal with aftermarket turbos and emissions? Will a setup like this ever pass?
It could, the hard part would be mounting the cat close enough for light off. But as far as everything else goes, your not removing any of the emissions components. so as long as the tune is right on, then yes it could pass emissions, But getting a carb exemtion # is something a bit out of my capabilities for the moment.
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Old Feb 8, 2004 | 01:10 PM
  #22  
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Default Re: Single turbo Lt1 headers (BowTieBlood)

Deposit for just the hotside headers and ovalized downpipe:$500
Deposit for an entire kit including every piece of hardware (turbo, wastegate,BOV, intercooler,intercooler plumbing,turbo headers,downpipe and instructions)minus tuning (must be done by user or shop with flash capabilites):$2500

Total cost:
$850 for a set of 321 stainless turbo headers,crossover and downpipe
$4800 for the complete turbo hardware (once again minus tuning and engine mods)

*please note, that prices on the full kit may vary due to the size of the turbo for your needs, any options (if your a drag racer, I could make this a water/air setup)or any unforseen problems with the intercooler plumbing.

All with a 5 year warranty against cracking or workmanship. I take alot of pride in my work, and will build components as if they were going on my own car. You know they will fit well, because their being constructed on an actual LT1 C4 (my car)
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Old Feb 8, 2004 | 05:16 PM
  #23  
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Default Re: Single turbo Lt1 headers (Baldturbofreak)

(7-9psi) could probable be done with a set of 30's and a fmu. For timing you could use a 6 btm, but I think just pulling 5 degrees at 100kpa (don't forget to go into the minimum timing table and change that also)will be sufficient for operation up to 500rwhp or so.

Here are my .02 if you ask anyone with good decent experience they 'll tell you the above mention will not gonna be suffiecent for 7-9psi of turbo boost. Those 6BTM and FMU and the 30s are band Aided. If you are in doublt of what I say then I suggest you put that combo in the dyno, then you will know what I means. The people with the above 6BTM and FMU, 30s for their 7-9psi setup. Ask them how long did their motor lasted??. That is why they called "BAND AIDED"
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Old Feb 8, 2004 | 05:45 PM
  #24  
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Default Re: Single turbo Lt1 headers (Bruce)

Well bruce, thats exactly why I would leave the tuning/engine mods up to the end user. I only intend to provide the hardware neccisary for the job. Spark and gas is up to you. A "Tuner" kit if you will.
Not a cookie cutter complete "band aided kit" like most of your supercharger "complete kits" are marketed all over today.
The only way possible to provide a truly comprehensive complete kit would be with a stand alone/cut in harness with wide band feedback and a safe map. That pushes R and D costs and hardware cost/complexity way up. Even then it would be foolish because to truly reap the benefits of said sytem will require a forged rotating assembly.
Im looking for the customer who is familiar with forced induction, had a few blowers and wants to try turbo. Or the guy who is pretty savvy with the wrench, puts 'er all on and drives (carefully) to the local dyno tuner. Or the tuner shop that has a turbo customer and is looking for quality hand-built parts.
The statement you quoted was merely a get ya in the door type of suggestion and not a roadmap to terrible turbo power. :chevy
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Old Feb 8, 2004 | 05:58 PM
  #25  
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Default Re: Single turbo Lt1 headers (Baldturbofreak)

Yes, but it is'nt a little misleading to tell some one to use FMU, 6BTM and 30s for 7-9psi of turbo boost??? it seems to me it just try to get people to get into turbo with minimal of $. But I got news for ya. For those who want to go turbo and think it can be done right and reliable for cheap $. It ain't gonna happen, You know that. But others might not know about.
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Old Feb 8, 2004 | 07:02 PM
  #26  
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Default Re: Single turbo Lt1 headers (Bruce)

No need to bash :smash: Everyone knows it's going to take a good deal of work above and beyond the parts he's offering to pull off a nice turbo set-up that runs properly.
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Old Feb 8, 2004 | 09:06 PM
  #27  
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Default Re: Single turbo Lt1 headers (Bruce)

I ran a set of 30's and an fmu for a while without incident. I set my wastegate for 6psi. It can and has been done. as long as you stay under the 512 g/sec limit you can program a little safety margin in the curve with the maf tables. As long as the wideband says 12-1 under boost your fine, band aid or no. The timing is the only concern.
I also never implied that this was gonna be the "cheap" way into the turbo realm. I merely implied that I could provide quality turbo system components for our beloved C4's for a reasonable price. :chevy
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Old Feb 8, 2004 | 09:10 PM
  #28  
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Default Re: Single turbo Lt1 headers (Bruce)

Yes, but it is'nt a little misleading to tell some one to use FMU, 6BTM and 30s for 7-9psi of turbo boost??? it seems to me it just try to get people to get into turbo with minimal of $. But I got news for ya. For those who want to go turbo and think it can be done right and reliable for cheap $. It ain't gonna happen, You know that. But others might not know about.
BTW, I take no offense Rochester winters make us cranky! lol :D
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Old Feb 8, 2004 | 09:17 PM
  #29  
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Default Re: Single turbo Lt1 headers (Rkreigh)

I'd be interested!! not sure the "flex pipe" would work out, but if you can figure out the placement and logistics for the single turbo plumbing, I think alot of folks would step up. the tuning could be done by quite a few folks, costtly but doable!!
Here is what I mean by "flex crossover" http://innovativeturbo.com/cgi-bin/h...50437264071827
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Old Feb 8, 2004 | 10:18 PM
  #30  
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Default Re: Single turbo Lt1 headers (bill mcdonald)

I have thought of the oval tubing too.

I am not sure I want to do any welding on the turbo housing yet.

Do you think comming down the center of the 4 merge pipes would be a good place to weld a wastegate tube?

I think the burns collector would be entirly way too long.

Here is what I had in mind with the wastegates
P.s. these are off the shelf GN turbo parts and will fit on your t3's (I believe)


http://turboneticsinc.com/gn.html


[Modified by Baldturbofreak, 3:19 AM 2/9/2004]
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Old Feb 9, 2004 | 08:34 AM
  #31  
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Default Re: Single turbo Lt1 headers (Baldturbofreak)

one of the things I have always wanted to try is a "meaney style" TT LT1 Auto using a pair of the stock GN turbos.

this would spool like crazy and be good up to about 900 HP and the turbos are dirt cheap. even a pair of PT52 like Meaney did would make 1200 HP.

with relocation of the radiator to the rear there is plenty of room for everything.

ever since I saw this car, I thought, FINALLY a good running twin turbo c4 NOT done by one of the tuners.

meaney and troy t. teamed up on this one. sure wish I could get a set of THOSE headers built.

hey BT freak, what I am REALLY looking for is someone to help out with the whole project. not too worried about the engine build or tuning, but having ALL the plumbing built on the car, and the radiator relocation, that is what I need.

thinking of having MORE performance do a low 8-1 compression short block, and building up the tranny and rear to support 1000 rwhp.

thinking of using the stock ECM, with another set of injectors plumbed into the manifold with another ECM with a wideband to control WOT fueling. that way the stock ecm can be used for "off boost" driveability and the aftermarket computer will be boost triggered to bring on another set of injectors kinda like my beloved ZR1.

SGC is working on a twin turbo ZR1, but it will likely take them a while, and building up the LT5 is VERY expensive. plus, the turbos work a bit better with an automatic to hold the big HP and spool at the line.

my thinking is that a low revving 396 LT1 with BIG boost over 20 PSI would rock.

every time I bring my turbo regal up over 15 psi I can't help but think what another two cyl would do!!!

thanks btfreak, sounds like you are ready to do something!!! keep us posted on your ideas. ;) :cheers:
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