Hi, I am a mechanical engineering student and at our school we are give a project to show our skills. I am in the early process of SKETCHING a sequential turbo setup for a ls block in a 95 civic coupe. The setup is not what is bothering me, it is more a question of underhood space. If anyone has information or knows of anyone who has a sequential turbo honda PLEASE let me know. I think that if this works it will be one hell of a motor ALL THE BOOST NO LAG!

 

that's just it dude...i think that a lot of people would have done it already if the had more space under the hood...

 

how about 2 smaller turbos - 2 per cylinder. this has a better chance of actually fitting under the hood.


and dual exhaust hmmm interesting.

 

you would have to have one hell of a manifold to route the turbos to the passenger side of the engine bay b/c that would probably be the only place it would fit, then re route the charge pipe to the intake mani.

 

A true twin K24, TD04 or T25 setup would be much better!

 

This is the turbo pipe dream of all Honda owners- two turbos. I don't really see it happening for two reasons.

1) Room in the engine bay. Face it, there's not enough room. Well, there is, but you're looking at some incredibly complex manifolds that are going to need some serious bracing due to their length, and with all that hot plumbing snaking around in there, you're going to have to take a very serious look at heat management.

2) VE, or lack there of. An 1800cc motor flows around 200 cfm of air at 7000 RPM. If you're looking for low lag (why else would you want two small turbos in there?), 100 cfm isn't going to be enough to spool a T25. It may be enough to get a T1 up to speed, but it's not like you're going to go on Ebay and find two of those for $150, like you would the T25.

You could theoretically make it work if you either use staged turbos like they do in tractor pulling, or a hybrid staged/ sequential setup. But again, we come back to the space issue and the snakes nest manifold you'll need.


[Modified by House of Boost, 1:31 AM 11/6/2002]

 

just do a twin turbo small block chevy

i know its been done before, but 650hp pump gas cant be all that bad!

 

Mmmm... quad turbo 454 w/ reverse collector intake manifolds... *droool*

 

Instant headache.. Too much for my mind to handle.

 

Don't speak for all of us, one turbo is fine with me. And don't forget the other 99% of Honda owners who never even touch their car modifications-wise.

 

hmmmm... there's a 450hp twin K24 GSR in mainland Japan so I guess it's not a pipe dream. PROPER SIZING is the key...

 

Is this a DC2 or a DC5?


more turbos = more moving parts = more points of faliure = more money

simplified equation: more turbos = more money

 

i have actually been linked to a video from the forced induction forum of a twin turbo honda putting up some pretty impressive numbers on the dyno. now if i could only find it.

 

It's a DC2 from the Kyoto/Okayama area. This is a K24 twin setup on stock head/pistons/rods B18C with a Top Fuel headgasket, 720cc injectors and 1.3bar of boost. I'll try to find the website again!

 

ive seen a few pics on this site of civics with twin turbo. one was an h22 eg TT and the other was a h22 coupe TT.

 

I'd like to see some pictures and numbers along with that. I'm sure it can be done but just doesn't seem beneficial.

 

There's also some guy in FL with a twin turbo CRX that was in some riceboy magazine a few years back. Still, it's a pipe dream meaning it's not practical in any way. Sizing is the key, yes. BUT... if two turbos are the answer, how come all the fastest Honda guys 'n gals use one turbo, and all the fast Supra guys use one turbo as well?

Two turbos on a Honda are like body kits and dumb ***** laying on the hood. It's cool to look at for a while, but just not practical. But two turbos on an NSX... Well... NOW we're talking!

*edit- hÜk'd on fonix w3rkd 4 me.


[Modified by House of Boost, 1:09 PM 11/6/2002]

 

I've personally seen a race prepped 6th gen coupe (fiberglass body etc etc) at the track with a b18c1 Twin Turbo...the manifold wasn't that much of a mess but the car wasn't running that well either (for what it was)...for some reason I'm thinking it was DRT's car ? This was like a year ago...

and for the original poster...if you want no lag and really want to go crazy how about sketching up a twin charged setup, roots blower and a turbo


[Modified by Prod, 3:37 PM 11/6/2002]

 

The guy you speak of with the riced out CRX is Romeo. The TT setup never worked out...to many issues. He has a NSX now, if you were @ NOpi you would've seen it. Advans, carbon fiber wing, it dyno over 400hp I think. Its bad as hell.

There is a reason why owners of TT setups (Skyline, Supra, RX-7) go single turbo. I'd ventrue to guess money being one of them (Have you seen the cost of upgrading a TT setup to a bigger TT setup as opposed to a single turbo setup. The reason I'd venture ot guess is ease tuning.

 

drt has been runing a twin turbo setup on their drag civic for quite a while now, seems likethey are doing fine with it...

 

answer to all these spool up answer -------- lots a nitrous

Im thinking bout a 150 shot to spool up a pair of t25's

 

Twin turbo's on a honda: Do not attempt unless your name is bob norton and you own a drag integra with 4k hp

 

SUPPOSEDLY.... i have heard rumors (and we all know about rumors) that Steven Papadakis will be running a sequential turbo H22 next year in the AEM Civic, i personally believe it's BS, but it sound cool....

ok, IF, you did this, could you not use a small mitsubishi turbo (14b, or maybe smaller) on 2 cylinders to spool the small turbo then to the larger tubo.. you get the point

IMO, you BEST bet to get a good TT honda, is use an H23 with a 89mm bore... that's the only way i think you will be getting all the airflow to spool 2 turbos