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My goal: built a delirious turbo engine, I would like to install 4 little turbo on a LQ4 with 800hp goal.
but how lubrificante these turbos? is that a stock LS oil pump is reasonable or you think it's absolutely necessary to have a external oil pump ?
KROM you saw right. Instead of buying a big Chinese turbo, it did come to the idea of e 4 to a vehicle smaller and which is easy and cheap to the junkyard. it makes plumbing work (exhaust, intake), but to me, it is in the pure style hot rod when the engine will be installed on an altered.
In FRANCE, there are lots of car with small supercharge engine with high performance :
PEUGEOT RCZ 1.6 liters (97ci) 270hp on the PEUGEOT RCZ https://en.wikipedia.org/wiki/Peugeot_RCZ
Just get a log manifold and go to town with copper tubing. I'd consider a HV 2005+ oil pump for 4.
I'd think a log manifold with all 4 in the grill would be easy. I was considering 3 of the china 50ish MM units with wastegates. You can pick up 3 of them for under $450. Cost VS performance it's really not a bad idea IMO. Something like this in the grill area.... and you wouldn't' even need the WG's.
Those turbos, even four of them, are going to choke a 5.3L V8 with back pressure. They are for 1100cc engines, correct? Yeah, even a 4.8L would need more turbo than 4 of those.
But, if you really want to try it, I am down to help. I'm not going to tell you not to.
Mount a solid support bar across the top of your engine bay, between the fenders like a strut tower brace, but forward of the motor. Close to the radiator support.
Put all four turbo flanges on this bar.
Run up/forward eBay headers with a 3" to 2.5" Y on each header.
Put a 38mm wastegate on each 2.5" outlet, you should have four.
After each wastegate install a 2.5" flex hose.
Connect each flex hose to each turbo exhaust inlet with whatever piping necessary.
Get a twin turbo intercooler.
Merge the outlets of the two passenger side turbos into the passenger side inlet of the intercooler.
Do the same to the driver side.
The intercooler has one exit that will be connected to the throttle body, mount a 60mm blow off valve somewhere in between the two.
As for the down pipes... Who cares? Run four hater pipes straight down to dump under the car, or straight up out of the hood. You can merge the down pipes and run a normal exhaust out the back, too.
I think use 1 to 2 cylinder turbo side by side.
I hope to have sufficient exhaust flow to drive the turbine.
the picture of the BBC is a good way for me but if it isn't to difficukt, i think to instal an intercooler between turbo and intake.
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turbo lubrification 
