That's Cute, This is Ream's rig with two 75's feeding a 91

thats scary but drag car lol

That's 6200lbs of 4wd truck that runs 8.80's

that would be pretty fun and intense to be in

It's different.

need more power to haul your lard ass around

ez lala~

Never seen a setup like this, anyone care to explain if I'm looking at this correctly? The two 75's are spooled regularly from two turbo manifolds @ the exhaust gas inlet and their pressure is then being sent directly into the ambient air compressor inlet on the 91 to spin the compressor wheel?? Maybe I'm confused, but I would assume that wouldn't get optimal spool out of the 91 if there is no turbine exhaust inlet (hotside) spinning the turbine wheel.

Wicked looking setup, just looking for some clarification with edit out too much criticism since I've never seen anything like this.

This post was edited by ug_warrior(xtc) on Jul 20 2016 11:15pm

I know little to nothing about turbos but I'm GUESSING one or both of these could be true

1: the twins spool up much faster, which would cut down the amount of turbo lag on the 91
2: the twins force s much air into the 91 that he can run extremely high amounts of boost so he gets more power from the truck in just a 1/4 (or 1/8th depending on what kind of race)

? don't take my word for it, but those are my theories.

These cummins motors only have 1 exhaust manifold.

What guys will do is directly feed the "big single" (91mm in this case) off the manifold and then Y out of the big single discharge into the compressor wheels of the smaller twins (75's)

The smaller 75's take much less air flow to spool compared to the 91.

On the intake side, your 75's are ambient and then sending compressed air into the 91's inlet.

Other than that...A lot of nitrous to get things moving, a little witchcraft and before you know it you're slamming ~150lbs of boost into the cylinders and praying to god your head holds.

The only downside to these is they run a little on the hot side for IAT's... Usually a motor is lucky to see 10 passes.

Big single is set up like normal

Exhaust from turbine exit of big single primary feeds turbine(s) of secondary turbo(s). Secondary turbo(s) spool quickly and ambient air is compressed then blown into the compressor inlet of the large primary.