Im building a quick class car and i wanna know how hard it would be to make it a twin turbo honda, ive seen the Drt Twin T3's i believe but will two diff. sized turbo's work? quick boost, and monster boost up high?

 

It wouldnt handle the boost. You would have to build like a titanium block and heads. Then you would lag like a mother even if you did.
gmoore

 

mazda used to make the diff size twins,
talk to them at DRT im sure they have a good idea of what your gonna need to do .

 

twin i spretty much pointless on the honda i would go single just open the moter up and use a larger turbo........(maybe a T3/T4) What size engine and what modle car are you using?

 

you are a clueless moron.

 

I have seen a twin turbo set up. Although it was in a Sandrail. Pretty sweet.
I believe they used the same motor that are in the Honda Mini Van's. V6. Check the link.

http://www.buckshotracing.com/intro_buggy/x5-honda.htm

 

if im not mistaken the meguiars Integera is a twin turbo set up. the honda 4 cyl. engine doesnt produce enough exhaust gas to spool big turbos quickly. so imagine if u were to divide that in half. u would have to use two cylinders to spool each turbo. Mazda uses different sized turbos but that isnt called a twin turbo its called a sequential turbo setup. a smaller turbo spools quickly to get u up to speed and a larger turbo takes over up top. To twin tubo a honda really shouldnt be that difficult. a custom manifold a Y pipe and the rest should be the same as using a single charger.

 

The meguiars car is twin CHARGED with a turbo and supercharger. Twin turbo on a honda is pointless but it can be done if you use two turbos that have small AR. exhaust housings that are high boost capable. A twin I-4 honda would mainly be a show item.

 

disinformation you don't need two turbos and a t3/t4 is still small.........the answer to your monster boost question is ---> t60-1

 

as far as the twin turbo setup, i dont agree with it, bit ralphy likes it and has it makin some nice power. if he gets some good suspension in that car and lightens it up , he will be right there with the rest of them. ie....jojo,tran,kubo,yada yada..he seems to have the system working nicely.

 

Yea, and look at how many FD guys are switching over to single. Sequential is way too complicated. And it's harder to diagnose if a boost problem arises...which it will.

Stick with a big single. Easier to tune, easier to make more HP. And I assume this is going to be a drag race only car?...so lag isn't an issue, just throw in a shot of nitrous.

And how come this is like the 10th newbie post on a "dream" twin turbo Honda?

 

yea id stick with the single if i were you, drt is fast, but just as fast as the guys running single turbos in their class. and look at the apexi integra it runs the same speeds as the cars in its class

 

Theoretically, you could do compound turbos and make them work very good. You have one small turbo feeding the big turbo. It would be pretty complicated, but could be done...

 

It makes sense because once the smaller turbo goes positive, the extra exhaust energy can feed the larger turbo. You just have to make sure you don't overspin the little guy. Remember that larger turbos can support more airflow.

 

Your answer isn't Twin Turbo, or a small Turbo feeding a Big Turbo...

It's Nitrous...Learn to Love it.

That's what all the big dawgs are doing...that and Methanol.

Honestly, if your trying to build a competitive Quick-Class Car...you better base it around Methanol...Sad but True. Also, Wheelie Bars and a Driveline that will support the power on 26-28" Slicks. Stock up on Ring and Pinions!

Suprdave

 

If you're looking for a quick spooling turbo with killer top end, just stick with a big single and drop some nitrous off the line. This is a track only car anyways, there's no need to have a quick spooling turbo.

 

The methanol is obviously the fuel of choice, but not many of the hondas are running nitrous. Venom, I believe, is the only one in the 8's with nitrous. The rest of us are just running big fat turbos. And the nitrous off the line thing isn't a good idea in a fwd car!!

 

if someone could get a compound turbo setup right and get them tuned it would be sick, but a tuning nightrmare...

TONY1 ... are you gonna be at e-town this weekend??

 

Yup, I'm flying out tomorrow afternoon.

 

Okay, let's make it easier....progressive nitrous controller...

 

A properly set up turbo car will have more than enough power and there will be no need for nitrous whatsoever. Besides that, the car has to weigh 200lbs more to run nitrous. It's not worth the weight.

 

Doesn't it only hafta go +200lbs if it's at the MINIMUM Weight.

That's why Venom is running it...firstoff, so they can make their sponsors happy, and secondly...because that fat little coupe is already overweight so they loose nothing by using it.

I wish you guys coulda saw the way Venom hooked at Route 66 in Joliet. I believe they were ona 28" Slick...Hook at the 60ft and I seriously saw them spinning the slicks at the 1\8th mile. It was kinda like perpetual motion...almost eerie. They ran a 8.77 at some insane mph, so Im sure they were hookin' fine. Musta been my imagination.

Suprdave

 

When i typed that...I meant either running methanol, or running racegas with Nitrous.

Suprdave

 

I believe that most twin turbo applications such as the RX7 are sequential turbo setups. There is a smaller primary turbo to let rid of the turbo lag and then once the preset amount of boost is reached then the first smaller turbo is bypassed and the exhaust gasses are then sent to the larger secondary turbo the deliver maximum boost at higher rpms. You probably couldnt safely twin turbo a civic or teg motor because of the design. If you had a v-6 motor then it would be simple.

Never mind guys I didnt read the earlier post on the sequential twin turbo setup


[Modified by hondafrk, 5:40 PM 10/4/2002]

 

Why am I a moron? A stock Honda engine could really handle twin turbos?
gmoore