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Tpi forced induction

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Old 09-19-2007 | 03:28 PM
  #1  
rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
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Tpi forced induction



I want to take shorty heads and flip them so they point up, from their im mounting the turbo’s from each head right next to the intake manifold/ plenum on each side, will the turbo transfer two much heat to the intake, and if there is a muffler on exhaust will it blow off, or stall the turbine when it back fire’s. This is the most frustrating trial and air I have ever gone through. Anything please comment thanks!!!!
Old 09-19-2007 | 03:39 PM
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Tpi forced induction

Cats & mufflers on turbo engines are not uncommon, at all. So you'll be safe running a muffler, and not have it blow off. Besides, the restriction from a muffler ranges from flo-thru like a glass pack style, to an OEM super quiet muffler.
Old 09-19-2007 | 03:43 PM
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rice slyen 87's Avatar
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Car: 87 iroc-z
Engine: 350 tpi motor
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Axle/Gears: lsd 4.10
Re: Tpi forced induction

thanks, do you see anything rong whith how i'm mouting the turbo's
Old 09-19-2007 | 03:45 PM
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From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
Re: Tpi forced induction

try posting on the "power adder" board, this is hardly an origional idea.. been done time and time again..
Old 09-19-2007 | 03:51 PM
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Tpi forced induction

Never seen it done personally, but I don't see a problem. I suppose it would depend on much the headers are 'block hugger' headers or merely straight down headers. A heat shield could easily be mounted between them, the feflect radiant heat.

I guess the question is, would it position the flanges, in a spot to mount the turbos, and still have them clear the valve covers, strut towers, etc.
Old 09-19-2007 | 03:57 PM
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rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
Engine: 350 tpi motor
Transmission: 700r4
Axle/Gears: lsd 4.10
Re: Tpi forced induction

i have posted a cuple of times, and when it comes down to real question's no one has Answers, I’m 17 and fabricating my own turbo kit i dont have money to blow this motor it need's to be done right, + i'm working with three grand that might no be enough
Old 09-19-2007 | 04:01 PM
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rice slyen 87's Avatar
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Car: 87 iroc-z
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Axle/Gears: lsd 4.10
Re: Tpi forced induction

thanks Stephen your the only one to have any vbmenu_register("postmenu_3471007", true); Answers. this hole project is becoming a mind F&*k
Old 09-19-2007 | 04:02 PM
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Tpi forced induction

Fab is the easy part. Tuning though, will take a lot more work, knowledge & cash.

If $3k is your budget for twin turbos, and you can't tune, program, and burn chips yourself....turn back now.
Old 09-19-2007 | 04:11 PM
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Car: 87 iroc-z
Engine: 350 tpi motor
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Axle/Gears: lsd 4.10
Re: Tpi forced induction

as far as fab goes im fine but the ecu and computer programing, I’m more screwed than a 90 pound cheerleader on prom night. i'm not turning back 500hp will never be met with n/a
Old 09-19-2007 | 04:44 PM
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Car: 85 T/A, 92 Rs
Engine: L98:D,L03:<
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Axle/Gears: 3.23 bw, 2.73 10 bolt.
Re: Tpi forced induction

I’m more screwed than a 90 pound cheerleader on prom night. haha never heard that one...

i would honestly check out some of the tuner forums, like ka-t.org. people fab turbo kits and turbo manifold there all the time, ought to be easy to re weld the flange in any postion you need it. twin turbo's have been done in waaay smaller engine compartments then ours, i.e. the 300zx tt.

i have an idea, what if you mounted the turbo's underneath the tray area, like under where the battery goes, then you could easily mount the intercooler in the grill area, if the engine bay is all cleaned out in that area that shouldn't be overly hard, and then the exhaust is much easier to bring back out from underneath, and the piping from intercooler could be routed over the radiator like the stock camaro's are, probably have to use some sort of flat oval shaped piping to bring up the the total diameter a bit, but that matches the stock throttle body anyways.

either that or a single turbo mounted ahead of where the stock y pipe is, like beside the oil pan. but then you would have unequal pressure from the banks, so i dunno. in retrospect the first idea is probably better

Last edited by rockit; 09-19-2007 at 04:51 PM. Reason: had a thought
Old 09-19-2007 | 04:58 PM
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rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
Engine: 350 tpi motor
Transmission: 700r4
Axle/Gears: lsd 4.10
Re: Tpi forced induction

i would but i dont want to deal with all the jap's on that site i like imports not the cocky people who drive them. thats why i like thirdgen.org whair you get people that want to help not talk about how fast there rice burner is
Old 09-19-2007 | 05:03 PM
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rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
Engine: 350 tpi motor
Transmission: 700r4
Axle/Gears: lsd 4.10
Re: Tpi forced induction

do you know what i need to do to the ecu
Old 09-19-2007 | 05:04 PM
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From: Middleburg Hts. OH
Car: 85 T/A, 92 Rs
Engine: L98:D,L03:<
Transmission: 700r4x2
Axle/Gears: 3.23 bw, 2.73 10 bolt.
Re: Tpi forced induction

actually if you try ka-t, it isn't bad. its alot of guys similar to the l03 board here, they turbo the ka series of motors, which is looked down upon in the nissan world, but has some potential, infact i'd rather build a ka then an l03 10 to 1. i understand, believe me i soooo understand what you're saying about other forums, but im saying, the website is aimed at turboing n/a motors and there aren't kits out there for the sohc motors. they're very knowledgeable and one of the only tuner websites i reccomend.
Old 09-19-2007 | 05:06 PM
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rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
Engine: 350 tpi motor
Transmission: 700r4
Axle/Gears: lsd 4.10
Re: Tpi forced induction

i like the singal turbo idea thats probably the best way to do it, just room is a problem
Old 09-19-2007 | 05:11 PM
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From: Middleburg Hts. OH
Car: 85 T/A, 92 Rs
Engine: L98:D,L03:<
Transmission: 700r4x2
Axle/Gears: 3.23 bw, 2.73 10 bolt.
Re: Tpi forced induction

i would go ebl on the ecm side of things. search it. the single turbo idea coul work, alott easier then twins that's for sure. keep in mind you're going to want turbo expertise on this, theres alot to getting boost controllers wastegates and all working properly, and then tpo tune at the same time..

Last edited by rockit; 09-19-2007 at 05:13 PM. Reason: adding
Old 09-19-2007 | 05:23 PM
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rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
Engine: 350 tpi motor
Transmission: 700r4
Axle/Gears: lsd 4.10
Re: Tpi forced induction

can wastgates be set to open at pre set psi. and if say when this is done i take my car out and floor it, when i let off is all that psi going to blow me intake manf off.
Old 09-19-2007 | 05:24 PM
  #17  
rice slyen 87's Avatar
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From: ill
Car: 87 iroc-z
Engine: 350 tpi motor
Transmission: 700r4
Axle/Gears: lsd 4.10
Re: Tpi forced induction

i mean with out oost contral
Old 09-20-2007 | 01:05 PM
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Car: 85 T/A, 92 Rs
Engine: L98:D,L03:<
Transmission: 700r4x2
Axle/Gears: 3.23 bw, 2.73 10 bolt.
Re: Tpi forced induction

you're thinking two different things. wastegate IS your boost controll and is necessary in a conventional setup, your blow off valve lets off the excess boost as your engine decelerates, all these are usually controlled by vacuum lines, a boost controller just leaks vacuume to control the wastegate independently. try a how stuff works search they have a pretty good article on it IIRC.
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