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Would this work?

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Xero_Tolerance

20+ Year Contributor
145
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Sep 27, 2002
Austin, Texas
Installing a turbo right before the muffler.

Basically what I want to do is take out my current muffler and create a pipe that attaches to the turbo from the cat and then another pipe that attaches to the other end of the turbo that goes into the muffler so basically it's just like a normal turbo but it's way further back in the exhaust rather than right after the manifold. Advantages would be a much lower temperature for the exhaust side of the turbo to deal with because the exhaust isn't 900 degrees right out of the engine and that would of course cause lower intake temperatures. Another advantage is it would be easy to install. Problems would be getting an oil line to the turbo and a coolant line. I'm not sure how much cooler the turbo would run because it would also be getting cool air from the under carriage so a coolant line may not be necessay but I guess some sort of separate oil pump would have to be installed to circulate oil through the turbo. Another problem or difficulty I should say is getting the compressed air back to the intake but just adding a rubber pipe should solve that problem pretty easily.

I'm considering doing this to a Neon R/T and it has the 420A in there so I'm curious as to how much I can boost the engine safely without any other mods.

This is just a random idea so don't go crazy on me.
 
Turbos derive their power from heat energy. You want them hot. Yours would work, after a fashion, but not very efficiently.
Read up on the ones mounted at the rear of the exhaust.
 
I'm not trying to be rude or anything because I know you know your stuff but how do turbos work from heat energy? They have the exhaust side which is powered by all the exhaust gasses spinning a turbine which is then attached to the intake turbine that sucks in air. It seems to me like the pressure at the beginning of the exhaust and at the end shouldn't be a whole lot different but the further down the exhaust you do the cooler it gets because it is being air cooled. I guess if the heat causes the turbines to expand and fit better then it would make a big difference but I don't understand how the heat plays a role in the power production.
 
sts turbos....that's what your talkin bout.


meh, to each his own.....
 
Why? Why would you relocate the turbo and go through all the work, fabrication, and money when you can bolt it right up to where it is suppose to be. Turbos are put places for reasons, theyre not just slapped onto places...

If this kind of thing were easy and efficient, you would see people with turbos hanging off their mufflers..

Do you just have money to play with and some extra parts or what? I'm sorry, I just don't uinderstand WHY you would WANT to do this.

Either way, good luck.
 
Blitzeclips said:
Why? Why would you relocate the turbo and go through all the work, fabrication, and money when you can bolt it right up to where it is suppose to be. Turbos are put places for reasons, theyre not just slapped onto places...

If this kind of thing were easy and efficient, you would see people with turbos hanging off their mufflers..

Do you just have money to play with and some extra parts or what? I'm sorry, I just don't uinderstand WHY you would WANT to do this.

Either way, good luck.

Yes, it's a lot of fabrication and possibly money, but just because you've never seen it done doesn't mean it hasn't been done before on other vehicles. THere are plenty of vehicles out there that have after market remote mounted turbos, the 420a eclipse/talon just isn't one of them, no need to jump on him for a thought.

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I never jumped on him about it. Sorry if it seemed that way.

Yeah that setup is twin turboed and on NOTHING like a 4g63.
 
Blitzeclips said:
I never jumped on him about it. Sorry if it seemed that way.

Yeah that setup is twin turboed and on NOTHING like a 4g63.

well obviously it's not on a 420a or 4g63, that's an LS1 vette. It was just meant to show that the idea has been proven to work, just never been done on our cars. I agree, I don't see why you would want to try on our cars, but it would be a cool thing to see :thumb: :dsm:
 
olmytsi said:
He said he wants to do it on a neon...you guys need to READ!

hehe I read, neon = 420a too. I was speaking very generally as in all 420a's (neon, eclipse, etc.) and all dsms (420a, 4g63)
 
not all of the cars where they put turbos on the exhaust are custom fabricated. I remember seeing powerblock about a year ago where they were representing an exhaust turbo kit and actually installed it. This is actually how I first learned about turbos and I thought it was a neat idea.
 
Well in terms of cost... I'd have to buy a manifold, all the lines, 02 housing, intake piping to install it on the 420a. I already have the turbo and I have a busted 92 gsx so I have a bov and intercooler, which I have read may not even be needed if you put the turbo in the rear because the intake pipe leading back to the front from the turbo acts as an intercooler and the exhaust side, thus the intake side, of the turbo stays a lot cooler due to the fact the exhaust air is about half as hot towards the rear. Anyway, in order to put the turbo in the rear all I need is someone to weld a pipe from where the cat ends to where the turbo normally hooks up to the manifold and then one from the other end of the turbo where the o2 housing normally sits to the muffler. I wouldn't need an o2 housing since I'd just leave it open as a dump. Then I gotta buy some piping to go from the intake side of the turbo to the intake manifold and that won't be all that expensive or hard to fabricate. Hook up my first gen BOV to the intake pipe and it'd blow off under the car and to the side which would probably be a lot louder. To be honest I haven't done any research on the MAS/MAP sensor for the 420a so I don't know how I'll hook that up yet but that would be an issue no matter where I mount the turbo. Anyway, It'll be an experiment but honestly I'm not looking to boost a whole lot and if it works at all then I can say I did it...

Anyone have any good links or explinations of how the 420a intake sensor works, like can I hook up a turbo and boost it about 6 or so and have it function alright, or what kind of steps do I need to take in order to ensure everything works well. Thanks.
 
Xero_Tolerance said:
Well in terms of cost... I'd have to buy a manifold, all the lines, 02 housing, intake piping to install it on the 420a. I already have the turbo and I have a busted 92 gsx so I have a bov and intercooler, which I have read may not even be needed if you put the turbo in the rear because the intake pipe leading back to the front from the turbo acts as an intercooler and the exhaust side, thus the intake side, of the turbo stays a lot cooler due to the fact the exhaust air is about half as hot towards the rear. Anyway, in order to put the turbo in the rear all I need is someone to weld a pipe from where the cat ends to where the turbo normally hooks up to the manifold and then one from the other end of the turbo where the o2 housing normally sits to the muffler. I wouldn't need an o2 housing since I'd just leave it open as a dump. Then I gotta buy some piping to go from the intake side of the turbo to the intake manifold and that won't be all that expensive or hard to fabricate. Hook up my first gen BOV to the intake pipe and it'd blow off under the car and to the side which would probably be a lot louder. To be honest I haven't done any research on the MAS/MAP sensor for the 420a so I don't know how I'll hook that up yet but that would be an issue no matter where I mount the turbo. Anyway, It'll be an experiment but honestly I'm not looking to boost a whole lot and if it works at all then I can say I did it...

Anyone have any good links or explinations of how the 420a intake sensor works, like can I hook up a turbo and boost it about 6 or so and have it function alright, or what kind of steps do I need to take in order to ensure everything works well. Thanks.

Well to keep the computer from seeing boost all you need is either a Fuel Cut Defender (FCD) or a Missing Link. You can make an FCD for about $15 or get a missing link for anywhere between $30 and $60

Also If you remotely mount the turbo, then you won't need an exhaust manifold now would you. Basically I would think you would need a turbo flange welded to a pipe then have the pipe welded onto the exhaust and bolt the turbo up. I think the hardest part is figuring out the supply and return lines for the oil and finding a good way to route the boosted air from under the car into the engine. THe fuel system is just the same as any other turbo setup on the 420a eclipse
 
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