rb26 quad turbo (2x TT)
 

so iv been reading some posts on the net and found some people interested in quad turbo for rb. they say its not gonna happen and that its bulky, well heres my idea on how to make that happen.
think about the stock tt setup. now place that setup on 1 side of the engine and another on the other side. you get 2 turbos running at all times, consequentially lowering lag but increasing boost. also dry sump the motor and widen the front should work lol.
the turbos can be modified or replaced w/ diff type, a good intercooler and rad. ecu and fuel pump. might work

lemme know wat u think

10 points for being creative but, sadly there is a long list of reasons why it's far more trouble than its worth.

Exactly. I can't see the advantage of running 4 (presumably smaller) turbos. There are easier way to get rid of lag. You could run a twin sequential setup, variable vane turbos, increases displacement. Also, even though you could run smaller turbos, that does not necessarily translate into less lag since each one will have less exhaust force powering them not to mention the negative effect of increased back pressure. Also, as I understand it you are saying basically to use two different size turbos in order to have one set running at all times. This the theory behind sequential setups, however they have to be inline as you cannot have different amounts of back pressure on one half the engine compared to the other. Definitely creative though.

The easiest way to decrease lag is go for larger displacement. Stroker kit or RB26/30 hybrid (RB26 head and RB30 bottom end).

Goodluck with the exhaust manifold. :)

This idea would be great as a one time, money is no object, just to see how it comes out kind of thing.

But, it just doesn't seem necessary with the boundless performance offerings that 2 turbos already offer.

As stated earlier ridiculous costs and serious complications would most likely hamper any progress on this project.

But A++ for the idea...

-Nate

turbo lag will be ridiculous.. not something i would do.