Heres a project Ive been working on for quite a while

Eaton M122 off a 2009 Shelby GT500 on a LSx engine

Some of you may remember my last build using an older M90 on a 5.3 which netted about 60hp over stock. The instant torque was fun but it just needed a little more


Comparison



Basic fitment


Cutting a base plate from 1/4" steel


Designing a tight fitting balancer hub and stand off to use common parts. 6 rib accessory drive remains the same with a generic SBC 10 rib crank pulley as close to the block as possible


Rough model to gauge fitment. It was later amended to move the front plate up one bolt hole and add a second plate to hold and idler to clear the water pump bell. Tensioner is the standard that come with truck maggy kits that most guys upgrade. Its actually a diesel part. Pulley was swapped for a procharger smooth idler wide enough for my belt



Balancer hub came back from the machine shop. Hub is 4130 while the centering ring and stand off are aluminum



Building the brackets, keeping everything true


Rear brace. Those bolt holes in the cyl heads are sure handy


Building the collector hat. The tube running towards the rear connects the bypass butterfly to the charge pipe so the stock actuator can be used. The external unit for the M90 was a pain



Beginning the front plates checking belt alignment. From the last build I found that a serp belt can handle about .030" and .5* of misalignment before it will throw and/or chew a belt. Since this belt is about $60, thats a bit expensive to tweak afterwards. Had to be dead on from the start this time



How much room I have to work with


Plates finished and HD belt installed



Decent sized inlet


And its in there



Had to notch a plate for hood clearance, thats about 5/8"


Ford 8.8 conversion, calipers were painted later. Not sure whats up with the yellow


Fuel system


And thats about it



Rolling into the throttle from a stop. Long 1st and 2nd from the 80E. Boost comes in approx 40%


Hammering it from around 35

 

Sick build man! I'm guessing you do engineering work?

 

Nice work

 

Was that speedo accurate, it gave me a chub when it got to 120 so quick!!!

 

Talk about talent, mad props to u man. Sick work

 

Very nice work!

 

that speedo is way off , and why does it sound like a fire horn , cobras dont sound like that when off throttle .

and sorry for those questions , awesome workmanship .

 

Excellent work. How much u git in the blower and drive?
How much hp it kicking out?
Quality work

 

It sounded like you had a firetruck chasing you. Definitely different.

 

i would patent that

 

No boost bleed off is what it seems like to me

 

In school for mech engr

Off by about 10 at 70mph. Tuned for 3.42 gears and its got 3.55's. Point of the vid was to show the rate of change not running 100+

Whine is from the TB behind down stream from the blower. 99% of roots setups are at the inlet, so you almost never hear this until one is mounted remote like this. If I moved it to the inlet it'd sound just like a cobra

 

ahh gotch ya

 

Outstanding.

 

been following this on tgo. Nice work. Are you going to hit the dyno soon?
Kory

 

Nice work, but you have one problem with it and I even heard it in your vids. The belt tensioner is on the wrong side of the belt load. It should be on the slack side, not the tension side. So as you put a load on it, its pulling the belt strait and slacking the back side slipping the belt and then you let off the gas and you can hear the belt squeal as it speeds up the blower.

 

win!!
i cant wait to get my 122 on my 4.8 fc rx7

 

Thanks for the pointer, Ill see about moving it. Never thought of that

 

amazing work man! on a side note, that 5.3 i bought from you will be out soon, along with some boost and videos as well! you should deffinetly patent that design.

 

thats thinking out side of the box... great work man