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Alright, me and a couple of buddies up here are researching and planning on customizing a turbo for the 7th gen civics. Using a T3 turbo. Any ideas from anybody what we can do to our engines that wont be the hell out of them. Just need some ideas

thanks

 
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A buddy of mine is seeing if he can make a stock Eclipse turbo fit into my car with minor modificatins. It wouldn't have an intercooler or anything, but should be able to run 7-8 psi of boost. Any bigger than that you'd have to get new internals and seals.

 
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Erm... maybe 7psi... I doubt 8 will happen. The stock injectors probably won't put out enough fuel for 8psi and the car will run lean. Unless you find a way to fix that, anyways.

By the way, ALWAYS use an intercooler... better HP and less risk of detonation due to the air being too hot. If you can't afford a great one, go to your local junkyard and source an air-to-air from a supra, mitsu starion, or something.

 
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ive seen people build all sorts of twisted turbo set ups out of scavanged parts from turbo'ed cars. but most of these cars were older cars, not a new honda. its definately possible, its just a matter of trial and error and finding the right parts. there has to be SOMEONE out there with a turbo on their new civic. if so, id take a long look at what they have, and then improve upon it. or... just wait for the HKS setup or one from someone else and improve on that one. if you got the mechanical and engineering skills then id definately go for it.

 
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hey i am about to get the hks turbo for the rsx-s it might fit better than the eclipse turbo

 
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Well, you need a turbo, a turbo manifold, charge piping, intake piping, down pipe, and filter. That's just the basics though. I reccomend placing the intake pipe as low as possible to have a cold air effect. Get a K&N air filter and make it as big as possible for higher flow. Take a look at the air filter size of an aftermarket intake and use a bigger filter than that. Betwean the down pipe and the rest of the exhaust system you should use a flexible coupling to prevent exhaust vibration from damaging the connections the turbo has to the manifold and the connections the manifold has to the head. Get them from www.jcwhitney.com [IMG]i/expressions/face-icon-small-smile.gif[/IMG]

Now, an intercooler would help, but I think you need an aftermarket bumper to make it fit. That is unless you think of a unique place for it and mount a fan there or something? Now, an oil cooler will be nice. You'll have the turbo being cooled a little bit by the oil, so the oil temperature will rise. Get an oil cooler and that Greddy thingie that mounts in-line to the filter. That way there's no need to modify the oil pan. [IMG]i/expressions/face-icon-small-smile.gif[/IMG]

Now, are you sure you want advise? I have tons!!! I am working on a turbo myself. Well, at least in my head. [IMG]i/expressions/face-icon-small-smile.gif[/IMG] Keywords are custom turbo manifold and a dual scroll turbine housing. That's advanced stuff though, we'll stick to the basics. [IMG]i/expressions/face-icon-small-wink.gif[/IMG]

Now, you want a smaller turbo than a T3. Depends on the compressor and turbine wheels of course, but the largest T3 is capable of sustaining 350+ horsies. A T28 is capable of sustaining about 300+ horsies. A 25 is capable of sustaining about 200+ horsies. Now, a T25/28 hybrid is ideal IMO since you have really good pick up and the possibility of 250+ horsies. This is my choice personally when it comes to capacity. Although maybe there's something out there that's within my budget and gets the job done just as well. Haven't researched this that thuroughly yet.

Anyway, a BOV (Blow Off Valve) is a good thing. It makes a k3wl noise and prevents turbo spank. Get one. The wastegate will probably be mated to the turbo assembly. This kind is cheaper, so get it. External wastegates are more expensive, not in my ballpark.

The oil tap for the turbo should be stainless steel braided line. You'll probably have to tap the oil pan. On an oil change is probably best. Un-install the oil pan completely and then drill a hole in it towards the bottom where the oil goes under hard acceleration. Should be evident from the design. Then screw in a bolt with an inside and an outside thread. Then weld that bolt around the edges for added security. You'll need two of them I believe... You could get away with having this line go through an oil cooler instead of the Greddy adapter method. That might be better actually. Less hardware is less weight. [IMG]i/expressions/face-icon-small-smile.gif[/IMG]

Then something you might want to consider is exhaust wrap. Wrap the turbo manifold in it to deliver as much heat to the turbo as possible. Some people even wrap the turbo in this stuff, but it does have to cool down somehow. Oh yeah, remember to run the engine for a little while before turning it off. A turbo timer will definately come in handy later on when you have everything perfected. Actually, you can wrap thw whole exhaust system and this will be even better. Remember that if air flows through the turbo and gets a chance to cool down after it passes through then it will slow down and slow down the air before it. Dual walled exhaust would be perfect, but kinda impossibe to get. Oh well...

Now, here are some further refinements... The charge pipes could be made out of aluminum. This would dissipate heat better and would act as a small intercooler. Now, making the charge pipes with little fins to increase the surface area would work even more. Sorry, did I say little? I meant big!!! Although an intercooler up front will still function a lot better. Routing the pipes for one is difficult though. So... Up the psi to as much as you can and run a higher octane gas. This will prevent detonation and will allow you to run a higher psi. An intercooler will help even more...

That's pretty much the basic setup without changing the fuel system. For me it's a little more difficult because I have to change out my exhaust system to that of an EX's. Oh yeah, that's another thing. Get a higher flow exhaust system. This will help out the turbo. The plastic intake manifold is an ugly thing. We need to know what kind of temperatures and pressures it can withstand. One dude blew it up with a 50 shot of N2O. Maybe reinforcing it with some fiberglass would help? Just take it off and wrap it in fiberglass. Although replacing it entirely with an aluminum intake manifold would work even better. You could technically make your own, but that's another advanced topic that I have only minor knowledge of.

Basic ideas to take into consideration are... Heat is bad. The more psi the more heat, the more heat the more detonation, the more detonation the higher octane you need. Plus cooling the intake charge gets rid of the heat. That's the air that comes out of the turbo and is compressed. Not only does it heat up with the compression, but it heats up after passing through the hot turbo!!! Yeah, that's basically it. Gawd I love this stuff. Can you tell?

 
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Damn Grey.... your the man. Next summer when i have the greens and time to do a trubo, i'm gonna deff. give you a call... where are you from anyways? LATER

~nick~

 
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I agree go with a T25 MUCH cheaper to aquire. You can pick them up for little to nothing compared to the T3/T4.

 
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Where am I from? All over the place really. I live in Shrewsbury, MA now. I used to live in Colorado Springs CO, San Antonio TX, Tacoma WA. I was born in Poland though, we moved to the US when I was 6 years old. Political asylum. [IMG]i/expressions/face-icon-small-smile.gif[/IMG] Anyway, definately gimme a buzz if and when you decide to go turbo. I would, but I lack the cash to go through with it. [IMG]i/expressions/face-icon-small-sad.gif[/IMG]

 
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Damn Grey, that only took like 2 hours to read =) but seriously, there's a lot of good advice in there, if I ever find the $$ for a turbo, I'm giving you a call.

 
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Don't know if you've researched this grey - additional injectors to take car of the fuel problem...just add an extra injector or two at the throttle body of intake manifold and control them with an aftermarket FMU. Just thought I'd throw that in.

Oh, and grey....want to share the info on building a custom intake manifold?

 
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Yeah, I didn't mention any fuel system upgrades. You could do that or get rid of the plastic intake manifold and replace it with a customized aluminum one with additional injectors built in. Of course, you could just swap out the stock injectors for higher flow units and run at a set psi. This would work as well, but you don't get to regulate what psi you want anfd the fuel maps in the ECU wouldn't be optimized for the higher flow rates. It would work though and would prevent you from running lean. Poor mans fuel system upgrade I guess...

 
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here we go, another damn turbo forum......

 
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turbo stuff
from HKS