Benvprov

iTrader: (3)

Ok heres the question, Im swapping a 20b in my FD and I dont like the idea of going single turbo so is there any twin sequentials out there that I can hope to get 600 to 700 hp with? Price isnt a concern well unless there over 10 000. Anyone have any ideas?

BLK FC3S

why not go single? much cheaper and less mess.
i am still with stock twins for now and looking for 500-550hp
might upgrade the front turbo to a hybrid t4 and go for 600 but
after that single is the way to go.

felix_is_alive

if you are in doubt ,put the 20b in first then see what money you have left to go twin , just remember ,double the turbo :double the wastegate,double the piping ,double the money , plus it should be quite fun watching somewones face trying to make that manifold

calculon

iTrader: (29)

The best way to make a manifold like that, in my opinion, would be to make a log style manifold. . .Unless you did some crazy balance of compressor maps and used some kind of large diameter one way check valving and had one smaller turbo off only one rotor and then a second larger turbo off of 2 rotors so that they put out the same pressure at the same time at all times so that one wouldn't try and cause some sort of quasi surge on the other. . .ugghhh. ..felix is right, you could make someone's head explode that way.

a log style manifold would be pretty easy though, routing the exhaust thereafter would be kind of challenging.

just go single is the short answer, or go with BNR stage 3s maybe
ryan

GtoRx7

iTrader: (5)

I like calculon! He is a cool dude on Futurama.

calculon

iTrader: (29)

Even moreso, he's a kick *** dude on rx7club

Benvprov

iTrader: (3)

alright thanks for the opinions. Does anyone think u can get big power out of the bnr 3's on a 20b? That might be a route to consider. To give you all an idea of the money I have to play with right now, Im spending 80k on this project, basicly ecerything is getting done, so please feel free to throw ideas at me.

Turbo 3

iTrader: (3)

80K to budget and you're installer can't help you with "proven" technology...? wow. May want to seriously consider somebody else to help you early in the engineering stage while you still have money available.

Is there a reason you are considering sequentials vs. parallel or single? How are you planning on getting them to actually actuate to provide sequential operation? Not sure which stand-alones out there will even control this operation regardless, which is something you should find out and make sure your system actually CAN control this before shopping too hard for hardware that won't be controllable.

GtoRx7

iTrader: (5)

Definitely one of the most kick *** dudes on Rx Club.

Rocking Rotary

iTrader: (14)

I dont see the stock twins getting to that power level bnr's may get you close but the tuning you will have to do and the level of boost you will need to run would be just a waist compared with a well planned single turbo.

If you want to be crafty and still be cool and say I have a "Twin Turbo" car and since your budget is unlimited do twin GT35's that should eat up 10k pretty easy.

On a seprate note, you also just dont swap a 20b in a FD you build your FD around the 20B hope you know what your getting into may want too speek to a few 20B FD owners just to get you use to the shock of whats going to come.

tuj

Some clever rigging and a Motec or Haltech could probably control the necessary solenoids to run a sequential setup. Check out the simplified setup of the 99+ FD. But like the other posters, I don't see the point of running a 20b with a seq. setup. Its got enough torque that a big turbo or 2 parallel will still give good throttle response. If throttle response is what you're after, then you may as well start thinking supercharger. Otherwise the giant snail is going to win the hp battle, and the BNR's or the like won't flow enough for 30% more displacement.