EpicTuning

On this project, along with the customer, we decided it was time to get creative and do something a little different in terms of S2000 forced induction. The manifold is all hand made and laid out so that runners 1 and 4 spool one turbo as 2 and 3 spool the other. Two Garrett GT28RS turbos utilizing .63 a/r t3 housings were used along with two Tial 38mm wastegates. The air feeds through 2.5" polished aluminum piping that attatches to a custom V-mount intercooler and blows off using a Tial 50mm unit. The exhaust is sent through dual stainless steel 2.5" downpipes to full 2.5" cutom stainless steel exhaust finally exiting out Burns mufflers. Precision 880cc injectors and a 3 bar map sensor were paired with AEM EMS to take care of the air/fuel levels. Finally the car was sent off to Evans Tuning where the car was dyno tuned producing 475whp and 320wtq at 15psi and on 93 octane gas. At this point the kit has much more potential but the customer only wanted this much power for now. Here is the link to the tuners site with more info on that: http://forums.evans-tuning.com/viewt...hp?f=29&t=5532

EARLdaSQUIRREL

dyno graph doesnt look bad, but that could have been done with a 35r also

looks very nicely done though

scamp91ex

sick. very unique setup! i just got a boner.

EpicTuning

Thanks for the compliment!! We had done the 35r route before with much success. The reason for the twin was that the customer had wanted something different that hadn't been done before. Also we wanted to make a nice example of our fabrication skills.

97CWITR

"There are 2 turbos being used on the same engine. It out spools gt35r set-ups on the F20c engine and is making more power at lower boost levels, I think its doing really well."
-Jeff Evans

E85B18

x2

dpetro1

really nice work guys. i think my favorite part is the v-mount intercooler.

pretty crazy power on 2.5" exhaust too but the gt28's dont seem to mind, power holds nicely throughout the band

ej1love

yep,

espanol

Are there any pics of the manifold?

th3pwn3r

Yea, that's definitely more of a show or "because I can" setup. While similar or better performance is possible with a single turbo setup it doesn't quite give the look or feeling of something like this Beautiful work! How's she run? Was tuning a PITA?

boosted hybrid

Tuning was nothing out of the ordinary. This set-up is doing really really well for the spool and boost level. With dual 3" downpipes/exhaust it will make a good gain in power. We made a video of the car on the dyno, I have to dig the link up on our server. Out of the 40+ turbo s2000s I have tuned this year, this certainly has the most unique set-up.

amimaxima

pretty cool but that front bumper is GHAY!

OneBadTurboCRV

AMEN BROTHER!!!

cfwthb_94

definitely something to aspire too. Pretty bad ***

philafelman

looks like that turbo setup/manifold is a friggin jigsaw puzzle to put together...but i like it...im guessing by the pics that there isnt room to run 3" dp's?

Turbocivic94

Different but body kit looks like crap.

Teglove2

I totally understand why he would want something different but that looks like a nightmare to work on....cool fab job tho! I def agree about the bumper but hey not my car.....yellow s2ks ughhhh black ftfw!

drift2004

wow very nice, i think he should have gone v-band for easier installation on downpipes? o no?

2CAMSVTEC

wow!! same tech as the bmw twin turbo set up?? but 1 hundred million better!!! on a honda!!

FastEg6

Awesome job, very clean!!! Now go twin turbo A B-series Fwd car and everyone els will start doing it!!!

Tony the Tiger

First of all, this setup is amazing... I've always wanted to do a twin turbo Honda with proven results, but I guess I am a step too late to get something going...lol At least I can claim a good twin turbo setup on a B-series...

The dyno only tells you so much... I bet this twin turbo setup will easily build power much sooner the moment you slam on the gas pedal.

As long as there are no physical/mechanical drawbacks (lack of room for proper manifold/piping/downpipe/etc), a twin setup like this will easily have more turbine flow and run at a much higher efficiency range compared to a equal size single setup. It's going to spool sooner, build partial boost sooner, and also make more power per PSI with lesser exhaust pressures at the same given power/TQ as an equal size single turbo.

It is only when the ideal manifold design, downpipe routing and sizes are compromised when you try to cram two turbos in a tight space that a single turbo setup becomes superior. Besides that, two smaller turbos summing up to one big single is always going to be more efficient, just like why we have 4-valves per cylinder and not 2-valves per cylinder... Both can peak at the same flow potential, but two smaller turbos will have more of everything else.

Not just that, why are we comparing two GT28RS turbos with a single GT35R? That's not even a correct comparison. Two GT28RS equals to about 68 lbs/min of flow, so we should really be comparing to a GT4088R...lol How's that for a spool comparison.

philafelman

but can you really compare when only 2 cylinders are spooling each turbo? i would think that would factor into the spool time.

DSM-ZERO

That is just sick i like the fact that someone had enough testicular fortitude to do something like that...BIG UPS

dustin528

dang pretty cool! More a fan of a big single, but i like how the twims worked out!

Ryank327

I'd like to see pics of the manifold. Besides that I always wanted to do a twin turbo on a Honda for shts n giggles