maverick27

I'm not sure if this is the right area to post this...I have a serious question to ask. Please try and keep all laughter and negative comments to yourselves. I was wondering if it would be possible to make a twin turbo setup for an 01 civic si/ex. I've seen k20/k24 dropped in, boosted ones, k20 boosted ones, etc. I have some of the basics worked out in my head. I was thinking about getting two of the smallest turbos I could find and running them at 3-4 psi a piece. Can this setup be done? An dhow much (ballpark) would this possibly cost? I just wanna try something that hasn't been done yet...Any HELP/POSITIVE information would be greatly appreciated. Thanks.

Polkaroo Killa

On a 4 banger, stick with one snail.

Search on H-T, I know I saw some people do this, but the gains(if any) are minimal.

Solisman

what kind of basics have you worked out?

how much do you know about forced induction for cars? (turbochargers/superchargers)

it won't be cheap, that's for sure. tons of supporting mod to consider aside from the turbo's themselves.

intercoolers, fuel system (injecters, pumps, FPR's, piggyback/stand alone management systems), gauges, ROOM UNDER THE HOOD, exhaust, etc.

k_r_a_c_k_e_r

iTrader: (3)

I dont think your going to have room for 2 of them..

zeeman

iTrader: (1)

the joys of the internet.

I know aaron (weiRtech) built a setup for the owner of TI that was a twin turbo b16 in an 90-93 (DA) integra. So it CAN be done, if you have enough money. The biggest issue for a 01 civic would be the tuning. AEM EMS would be a must b/c you can't just chip your ecu and tune with a rom editor (like you can for the 88-00 civics/integras). I think hondata has either released or is going to be releasing something for the single cam civics, but hondata isn't cheap either, i know the k-pro is still over $1000.

I'd just use 1 turbo, having only 2 cylinders spool a turbo isn't exactly ideal. Twin turbo setups are best suited for engines with 2 banks of cylinders, such as a V6 or V8. Single turbo setups have been proved quite effective on hondas and there are literally thousands of people who daily drive their boosted hondas.

starboy869

I notice on Nissan and Toyota fourms people tend to ditch there twin turbo setup for a single big snail.

SilverSleeper

...Mazda too.

But serious its been done before. Most people who did it, did it for the hell of doing it. There doesn't appear to be any real benefits except for the "WTF" factor.

If your still interested, there is a GSR-TT build thread on honda-tech and D16-TT build thread on homemade turbo. Check it out.

bbarbulo

iTrader: (2)

ya, it's been done for the WTF factor. technologically speaking it's a turd

exhaust volume and velocity is needed to spool a turbo effectively, not to mention having a more even pulse distribution (think equal length manifold vs. log style) with more cylinders firing on one turbo. if you split it into two manifolds, you'll only have two pulses per cycle per turbo, which is fail

you can have 2 turbos but it won't impress anyone, ppl will just think you were dropped on your head as a child.

weir

anything is possible. it all comes down to dollars and cents. i don't believe this setup is running yet.






if i did it again, i'd do it maybe slightly different.

here is another unusual tt setup that i'm working on right now. for something like this, 2 turbos is probably easier.

razvan

maverick27, you must have waaay too much money and time on your hands. there are better uses for that...

sivic2000

Well at least you tried, those turbos will not flow anywhere near the same amount. The one on the left looks to be something like a mitsu 20G size. By the looks of the manifold or should i say 2 runners, you may not even get 5psi boost out of it, even at 7000rpm.

zeeman

iTrader: (1)

those turbos on the b-series were used for mock-up purposes only.
I believe the owner of the car will be using 2 GT28R's. The owner has way to much money and just wanted to build something different, believe it or not, it'll be going into a DA integra with an automatic b16 in it....i'll be helping with the install and doing the tuning.

zyepher

weirtech+zeeman>*

BigJ5

I have been wanting to run twin sequential turbos for quite some time now. The efficiency difference from econo cam profile to performance cam on DOHC VTEC motors make it a little more difficult to size turbo's for them. The newer ceramic BB turbos rule, but lets face it. They are expensive. Plus a custom sequential setup is just *****... or blumpkin worthy for HIV Andrew. lol

I still have a sequential TT setup off my buddy's 2JZ I swapped for him. Toyota's setup is overly complex utilizing a vacuum storage canister to control all of there silly little bypasses and valves. But one day I would like to make it work.

Honeywell (owner of Garrett) has designed a really nice TT system that utilizes one larger turbo and one smaller turbo. A lot of european car manufatrures have embraced this new setup. Toyota's uses 2 ct-12's, and at this time I forget what the 13b uses....

Using two turbos for a D17, well...that is a waste of money. Drop a K in there and TT that bad boy.

But if you want to know,
management - 750+ (piggyback greddy ultimate with harness)
Custom manifold - up to 1500 depending on time and materials
charge lines - 250 max
front mount - 100 - 400
Injectors - 250
oil lines - 25 - 200 (depending on ghetto or nice)
Turbo - two obviously - from 50 a piece (junkyard) to 1500
Misc crap - 250 (there is always misc crap)
Tuning - 300 - 1500

From just over 2300 to over 8k...
all for just 4 psi... that would give you roughly 162 hp at the flywheel.

You would still lose to an EG with a stock B16 and bolt-ons.... for that kinda money mate a Z6 head on your D17 with a Y8 manifold with high comp pistons + bolt-ons. I think you would still be ahead in power and the bank.

I personally will be tossing in a K24 from a TSX in my 05 EL. Only bolt ons will get me in the 200 whp range while still passing emissions and great reliability. The D17 is a waste of a motor imo.

Plus Aaron doesn't have D17 exhaust flanges...he does have L15 Fit ones tho...

zeeman

iTrader: (1)

BigJ5: jordan? is that you?

BigJ5

Yeah....it's me

just a heads up, I have a few things for you to tune in the spring.

mikep

lol, not sure why but that made my day.

mp01vic

I'm running a T3/T4 turbo in my 01. Its a serious pain in the *** to keep running, but I love it anyways. If you wanted to do a TT, I agree that it would have to be sequential. However, with this engine I notice very little lag with my turbo, and its a fairly large turbo. Going sequential would allow you to run a larger turbo than I do and cut out the lag it would have, but this engine would need some serious work to support the amount of horsepower you would be looking at if you wanted to do this. To run 3-4 psi of boost per turbo in a TT setup is like buying a jet so that you could fly it to work. It doesnt make sense. Not that a TT setup wouldnt be sick, but if youre like me, youre gonna want to know what that thing can do. Which means you are gonna wanna turn it up. Then you blow your engine (been here before, this is the voice of experience) :P

megomaniac

why bother with twin turbo, I read in a book that one big turbo is more efficient than two smaller ones. I'd do one huge turbo, twin scroll , with two wastegates, dual tial44's look freaking sick. ........

BigJ5

Well, I agree and disagree. Your cutting hairs based on the setup you want to run. If you have two pinner turbo's much like a supra TT, than yes I agree. Higher restriction. If, prehaps you incorporate the newer larger/smaller style setup I would disagree since the backpressure would be equal assuming the single setup turbo is the same as the larger turbo of the sequential setup. Good point nevertheless.