wacKo

ok so twin turbos are so that when the little turbo reaches its peak, the bigger one takes over... which works better then just one if done properly
but why not add more

is two the ideal number?
why not put more

X_LUDWIK_X

My background in forced induction isn't the best(since I havn't showed much interest until recently), so I'm gonna let someone else answer "why not add more turbos" question.

But one obvious point is space. Some car's have enough trouble fitting one on... two would be like trying to fit a watermelon in your mouth.

2TONE_93GT

iTrader: (3)

Most people go single because it is cheaper, 1 of everything. Twin is double the price essentially.

wacKo

so its costs money, so does everything else, but im not talking about your average street ride, i mean ppl put money into their cars, win shows and races, so your getting something back from your work
lets put triple turbos in?
and as for space, everything is customizable rite?

NOTORIOUS VR

twin turbo really only means that the car has two turbos... which are normally identical...

what you a describing is a sequential turbo setup...

you get an advantage with such setups where you are able to reduce "noticeable" turbo lag...

BMW did this on their new 335i model... although it's not really a sequential turbo setup (like on their diesels) they use two turbos to create a very linear power delivery.

DDM

iTrader: (1)

as stated above TWIN turbos is to have better POWERBAND with no turbo lag. The skyline GTR is a car that comes equiped with twin turbos from factory. Also the Supra Twin Turbo. Its so that they can have all that "power" with little to no lag. The bugatti Veyron 16.4 has Quad Turbo no? I think I read the spec sheet on supercars dot net site. 4 turbos must be insane

Also to much Forced Induction is bad. imagine having 4 turbos all running on 30psi of boost. That would rip the block apart

SuprAdam

Yes, but 4 turbos, each one flowing a small amount of CFM as opposed to one larger turbo flowing the same CFM as all of them...Most twin setups will become a restriction in top end flow when pushing high boost/lots of power.

It is just personal preference, but a propperly done sequential twin turbo setup is insane. Refer to the red mk4 supra featured in many local car shows and even newspapers....1200+whp from a sequential setup with much less lag than your typical "big" single turbo setup to produce those numbers.

But for me, single GT series all the way.

VPrime

another car that uses the sequential turbo setup is the FD RX7.

wacKo

basically to sum it up,
2 is not the maximum nor the ideal for every ride,
it all depends on how much your car can handle, while some cars can handle one, others 2 and the bugatti 4? lol sickk

so essentially you can put like 8 turbos, if you have the space, and can afford it obviously, and run them all on very very little boost?

Premium Dude

It's more to do with wether you have enough of a powerband to need 2,4,8 turbo's.

NOTORIOUS VR

no.. it has nothing to do with what an engine can handle...

It has to do with head design/flow, the number of firing cycles, displacement, efficency of the turbo(s), manifold design/flow, space restrictions, etc, etc, etc, etc... the list goes on...

there is no set in stone way to build a turbo setup... be it from a manufacturer, or aftermarket. Every design has it's + and - to them.

rabbitman

iTrader: (3)

Unless the car is RWD, or AWD, there's no point in having a twin, or sequential turbo system. You won't be able to use the boost generated by the smaller twin turbo's anyway. You'll just lose it to wheelspin.

X_LUDWIK_X

Why can't EVERY thread be this interesting to read.... LOL

wacKo

so that cant be referred to the turbo handling limit of a single engine? if not can someone explain that a little more?
appreciated:thumbsup:

T3hW1n

well the veyron is quad turbo... it is possible do it(anything is possible with enuff $$$).. but for street use its too expensive and your never gon use all of its potential