ok i can get a custom mani. and wondering has anybody ever seen a twin set up with s5 turbos. anybody have any insight on this.

 

No point.

 

just buy one good turbo.

 

it would be cheaper if i already have the turbos. im just wondering would if i can take the stock to lets say for argument 12psi then with double would that be equivlent to 24? yes yes single is better ive read that so many times in posts, but thats not what is being asked.

 

The turbos are TOO BIG to be used one per rotor, especially the turbine housing.

You sure you want to drive a car that doesn't start boosting until after 5kRPM?


-Ted

 

twin turbo sucks. only good for instant (pretty much) spooling. thats no fun. a good single turbo set up is better anyway. plus you get that kick in the *** feeling when it spools up

 

Instant boost is no fun? That just sounds retarded. Instant boost will give you a larger RPM range of power, which is what you want if your serious about cars.

 

What you're looking for sounds like what Mazda pretty well evolved for the 13BRE 3rd gen motor.
So look for a 3rd gen and you'll get a lighter weight car with a FMIC & twins.

Then don't be surprised after a year you start thinking about going to a single turbo for more power.

 

It think it's more of a question as to what you want.
Do you want maximum possible power, or do you want power as quickly as possible.

Take the Bugatti Veyron, for example. It has 4 smaller turbos so it has boost at all RPMs, even though 2 large turbos would have given the same power (or possibly more). It's a balancing act , because 2 turbos could have even a larger spool lag then 1 turbo if they're too large. There's math to it somewhere, but i don't know what it would be.

 

We've covered this many, many times before with always the same argument. There's really no point unless you are specifically just trying to be unique. The extra complication and plumbing of a twin system is no advantage in these days of ball bearing turbos...

 

Not practical to the average builder, but for those who want to be set apart from the rest, Go for it I guess.

 

i just really want to be unique for this car. my other tII is the race one. i want this one to stand out.

so would they be too lagy together? reted was the only one to bring it up. i want something to be quick in the low rpms. is there a smaller turbo to go in front of the s5?

thanx for the replies

 

It's been done already.

I'm trying to run a pair of GT2835R's on my 13BT.
These things are NOT cheap!
If you'd seen the turbine sections, you'd laugh cause they are soooo small.
But when I worked the numbers, this is what should work...
The turbine sections are like half the size of the stock FC 13BT turbos...

-Ted