Onefast V

iTrader: (3)

I'll take a picture side by side tonight as they don't look much different

punishmentcycle

iTrader: (6)

hey onefast, got word from the gto guy. bone stock ls2 m6 gto with full bolt ons making 9lbs of boost put down 584/556

Onefast V

iTrader: (3)

That's impressive. Do you know what pulley setup that was?

punishmentcycle

iTrader: (6)

2.8, stock balancer..1:1 rears according to him. his tuner is pretty aggressive.. his afr is 11.8 with 22*. heres what i wanted to know..IAT's after 4 pulls the highest he saw was 140

Onefast V

iTrader: (3)

seems like it equates to "roughly" an 80rwhp jump over the 112 with the same setup.

2007V

iTrader: (2)

So is that heads / cam as well? That boost pressure seems low otherwise. The engine must be flowing well.

Onefast V

iTrader: (3)

Here is a mp112 vs mp122 comparison side by side

Onefast V

iTrader: (3)

Btw that gear oil for the snout smells god awful

2007V

iTrader: (2)

That thing has a much better inlet design how it wraps around the circumference. Also the exit doesn't have those reversing / sound ports that will help efficiency as well. Looks great!

bigti99a

iTrader: (16)

makes ya wonder why they even made the 112. very nice.

punishmentcycle

iTrader: (6)

112 was designed a few years before the 122. 122 is just a better design all around..just look at the casting and machining between the two cases and not to mention the extra helix twist of the rotors. not many have spun these as high as i am and i plan to put the 122 thru the ringer as well

Onefast V

iTrader: (3)

So the blower is back on the car and a tune is schedules for this Wednesday. I'm bring both my 2.8 and 2.6" front pulleys. I've attached some photos i took throughout this drawn out process



As you can see with the back holes lined up, the opening and front 4 holes are not properly aligned. I had to open up that hole almost 2"



Also the rear cover that houses the gears to drive the rotors was 0.200" thicker on the 122 than 112. Therefore i relocated the front two holes forward and slotted the rear four so that the rear pulley position where is was with the 112 mounted.


Here is the freshly machined plate with the slotted and drilled holes as well as the intake opening enlarged.


the blower reassembled


Finally back in the car!!


And of course once it was on the car i found this interference! UGH! Thankfully i found it and was able to clearance it before turning it over.

2007V

iTrader: (2)

Great stuff!

Forcfed93

iTrader: (10)

In for results...

rand49er

^^^ Yeah that.

punishmentcycle

iTrader: (6)

im gonna say 520ish with current mods and 2.8 pulley

Onefast V

iTrader: (3)

Results are in 507hp/454tq Dyno charts to follow

2007V

iTrader: (2)

What are your current mods?

bigti99a

iTrader: (16)

nice #'s. i bet that thing rips on the low end.

Onefast V

iTrader: (3)

mods are 2.6 front pulley, Volant intake, ls2 tb, alradco radiator, cooling mist meth kit stage 2 I think (50/50 mix) and ls7 clutch