Hellcat Whine

[Jefe]

Installed the LMI(Legmaker) carbon fiber intake on Fathers Day with help from my grandfather and father.

The stock airbox really restricts air flow so adding an intake triples the twin screw supercharger whine. Dyno tests average about 18HP. Mine is bone stock besides the intake, hits 11 psi in good weather but only 9psi during the summer. I feel like Im driving the Snakebite Cobra now

 

[HudsonFalcon]

Awesome!

 

[Zemedici]

wait til you pulley it

 

[AustinSN]

Holy shit that's loud lol.

 

[GNBRETT]

dam that shits loud lol. sounds kool tho for sure

 

[Jefe]

wait til you pulley it

Its a 2015 so I have the 5/100k drivetrain warranty. Ill probably keep this car forever so one day it will happen. Its amazing how cheap and easy it is to make 800+rwhp

 

[Skitzerman]

Oh that familiar sound. Is it a Terminator or a Hellcat? Only your neighbors will know for sure. lol

 

[strokerls1]

I just pullied mine down with the lmi...the blower whine is amazing even under normal driving.

 

[Zemedici]

Its a 2015 so I have the 5/100k drivetrain warranty. Ill probably keep this car forever so one day it will happen. Its amazing how cheap and easy it is to make 800+rwhp

fwiw just because you pulley it does not mean your warranty is instantly voided. I sent a hellcat to dodge for a bit of warranty work and they performed over $8000 worth of warranty work, with it making 800whp. Had upper pulley, longtubes, injectors, the whole 9.

 

[Jefe]

I just pullied mine down with the lmi...the blower whine is amazing even under normal driving.

We need videos!

 

[Shhhh]

Sounds great!

Doing a quick Google search didn't help since I had no idea what to look for but what is the name for that type of supercharger design? If there is one gripe I have about the CTS-V's, ZR1's, pretty much all of GM's supercharged cars is that the top of the engine(intercooler/heat exchanger?) just doesn't do it for me in the looks department.
I'd still rock the Hell out of the Hellcat!

 

[Teal Terminator]

Sounds great!

Doing a quick Google search didn't help since I had no idea what to look for but what is the name for that type of supercharger design? If there is one gripe I have about the CTS-V's, ZR1's, pretty much all of GM's supercharged cars is that the top of the engine(intercooler/heat exchanger?) just doesn't do it for me in the looks department.
I'd still rock the Hell out of the Hellcat!

I'm not 100% sure on this and I'm sure one of the HC boys can chime in to correct me if I am wrong but I think the S/C is still just an Eaton. The intercooler is just on top of the blower instead of underneath it like Cobras/GT500's. The air just exits up from the top of the blower and then kind of does a U-turn as it gets pushed back down into the intake runners. Not sure if that answers your question? I don't know that there is a specific/different name for that type of blower though.

 

[Booky]

Sounds great!

Doing a quick Google search didn't help since I had no idea what to look for but what is the name for that type of supercharger design? If there is one gripe I have about the CTS-V's, ZR1's, pretty much all of GM's supercharged cars is that the top of the engine(intercooler/heat exchanger?) just doesn't do it for me in the looks department.
I'd still rock the Hell out of the Hellcat!

It is a IHI 2.4-liter twin-screw supercharger.

"This is the first production Chrysler Hemi V8 to feature a factory-engineered supercharger system. Supplied by Japan’s IHI Corp., the blower is a Lysholm type (twin-screw) positive-displacement unit, belt driven from the crankshaft. As opposed to a more traditional Roots-type supercharger with rotating lobes, the Lysholm compressor pushes intake air that’s received from the car’s large, functional hood scoop through a pair of close-meshing screws that resemble worm gears. The design features relatively low parasitic losses and air-leakage levels compared with Roots-type machines.

According to Cowland, his team “evaluated all of the current supercharger suppliers during the early stages of the program, relative to efficiency, power and torque requirements. IHI was selected as the best match to our requirements,” he said. The unit’s design and specifications were developed jointly between Chrysler Group SRT and IHI, he noted.

Displacing 2380 cm³, the IHI blower has integral charge coolers and an integrated electronic bypass valve to regulate boost pressure up to 11.6 psi (80 kPa). Its twin-screw rotors feature a proprietary coating containing PTFE and polyimides which enable closer rotating tolerances and help reduce air leakage for greater operating efficiency. The new supercharger has a 2.36:1 drive ratio and 14,600-rpm maximum operating speed. It uses synthetic lube and is sealed for life. A one-way clutch provides operating refinement without detracting from the mechanical “blower noise” that SRT fans adore.

Better known as a turbocharger specialist, IHI’s Lysholm-type superchargers have been used by AMG Mercedes (the S55 V8) and Mazda (Miller-cycle V6). Compared with a twin-turbo setup, the development team felt a supercharger would offer “a better match to the vehicle characteristics we were targeting, specifically instant throttle response and low-speed torque,” Cowland explained."

A quick video I made of my LMI at normal speeds:

 

[Sirhc7897]

Blower is not an Eaton. It's an IHI blower.

Also IC is underneath (has two of them vs one) and the air is compressed up to the top of the blower and down around either side.


Sent from my iPhone using svtperformance.com

 

[Troponin]

I have been toying with the idea too, but have heard a few folks put their stock box back on because it was so loud for a DD.

That's really loud under normal load though. Not sure if that would annoy me eventually.

 

[gimmie11s]

Sounds great OP!

I would get tired of it in all conditions other than WOT.

Sucks getting old

 

[tones_RS3]

Sounds killer!
Awesome stuff.

 

[ZYBORG]

I need blower whine in my life..... this stock life is killing me.

 

[03Sssnake]

sounds glorious!

 

[ZYBORG]

All hail America..... Land of the great!