Oh and here is the IG post...

 

thank you... I was like UMMMM ok?

 

I dont care the price, just hand it to me.

 

Wonder if its gonna sound as good as stock blowers🧐

 

Of course right after I get my blower ported by them and get their throttle body

 

Yea, seems like they could have mentioned that somewhere on their site to avoid situations like that. Just a coming soon would have been enough. I suspect they had lots of ported OEM blowers on the shelf they wanted to get rid of first.

 

Love the 2650’s. This should be good!

 

Well the post claimed that it will outperform ANY ported 2.4/2.7 or 3.0 IHI. We shall see!

 

It’ll also cost 3x as much, so there’s that

 

$6k, and then you’ll need a 2.4/7/3.0 for the lid and intercooler bricks

 

Or you use your current lid.

 

I’ve never seen Kong offer an exchange with hellcat stuff

 

They may not, I wasn't referring to Hellcat stuff specifically.

 

I thought the 2650 was smaller than the 2.7 IHI and that was the reason the 2650 didn’t take off for the Hellcat platform.

I realize this isn’t a Magnuson but what it the 2650 designation about. Interesting for sure.

 

2650 is a TVS blower not a twin screw like the stock blower. It’s far more efficient.

 

Screw Blower vs Roots Blower: Which is Better?

Discover the differences between screw blower vs roots blower. Find out which option is better for your needs on our blog.

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.

 

 

Can someone please help me understand. The liters in a supercharger is a value based on one revolution , so how can a 2650 be better than a 2.7 or 3.0? They literally produce more air per revolution.

 

Maybe watch the video?

 

I guess I'm confused.. is that just a Maggie 2650 retrofitted into an ihi case?

 

https://www.eaton.com/ca/en-gb/catalog/engine-solutions/tvs-r2650.html

 

 

Opcon group's SRM division owns the rights to twin-screw technology, of which there are three:

• Autorotor (roots style) - Eaton, formerly Whipple, and formerly Kenne Bell
• Lysholm (twin-screw) - used by IHI and formerly Whipple
• Sprintex

Lysholm was founded by a designer who left Autorotor. The early Lysholm 1600 and 2000 models were basically copies of the Eaton design but went from roots to twin-screw.
Sprintex was originally based on earlier Lysholm designs

Both Kenne Bell and Whipple now create their own rotor packs. Whipple had a license for the Lysholm design, and I believe Kenne Belle licensed the Autorotor design. Not sure if they still do or not.

IHI and Eaton still license designs from Opcon.

Eaton TVS 2650 rotor packs are sold to many others who build products around them, such as Magnussson and Edelbrock (who makes their own casing for the Eaton rotors).

This looks like Kong is now sourcing the TVS 2650 rotors and creating a casing to fit the Gen 3 hemi for it similar to the IHI casing for the Lysholm rotors.

Note: the above history from my notes may be incomplete or inaccurate--it's collected from various sources I found, and they don't all agree.

 

Im honestly surprised nobody did this sooner? Its a great idea for a simple blower swap and the stock look. I cant wait to see what they make on a stock stock car with stock pulleys.

 

Likely the reason it wasn't done sooner is no demand. The OEM blower when ported has supported some very extreme setups and beyond that Whipple had the market covered. I get that people are excited about a new product but I doubt it's going to much better than a ported 2.4L or 2.7L OEM blower.

 

My understanding is that the roots style is slightly less efficient than the twin-screw design. However, being a symmetrical 4-lobe design it's much easier on the bearings and can spin faster to make up the difference and is probably much more reliable to overspin--unlike the IHI that likes to burn up the male rotor bearing when over spun since it's spinning 5:3 of the input shaft speed.

 

My old school understanding was Twin Screw>TVS>Roots style. But TVS blowers like the 2650 have closed the gap on TS blowers like whipples. That rotor pack is unique as it builds boost similarly to a centrifugal blower. Not completely the same, but you dont see the instant on full boost like you do with the TS and roots. But their efficiency range is generally higher in the RPM and can carry HP out well past the efficiency of say a whipple or older Eaton Roots. I had a maggie 2650 on my ZL1 and on a WOT hit, it would start around 8psi and build boost to about 15psi at the most with the 90mm pulley I had. Not the instant hit of a whipple, but more controlled. But man did it carry out.

 

Regardless of everything, it will be really interesting to see how these perform. Great to have more options.

 

https://www.cherokeesrt8.com/threads/history-behind-lysholm-and-whipple.27125/

 

There's info in this thread as well.
Apparently some conflict in the histories depending on who you ask.
My notes could be incomplete or wrong.

 

Confusing 😕

 

Some brief google searching and looks like on other platforms people typically overspin other TVS 2650-based blowers anywhere from 22k up to 27k RPM regularly with reliability. It seems the performance characteristics (psi vs RPM) are fairly well understood on those.

 

whipple style generates less heat than the TVS style

 

You got data on that?

 

Btw Ive actually owned all the blower types we are talking about here and have personal experience with them unlike most others...

My 22 GT with the Gen 5 Whipple 3.0

21 ZL1 with maggie 2650

 

Always heard the roots blowers like a 6-71 were the worst with heat. I believe because the air went around the sides of the case rather than between the screws like an ihi 🤷‍♀️

 

whipple style generates less heat than the TVS style

You got data on that?

Yes this is actually correct. The 2650 bricks are massive. IAT2 temps actually go down as you make pulls with it. I have logs upon logs seeing this with my own 2650 on my ZL1. Vs the stock blower that would sent temps flying.

As far as heat goes Whipple has all these designs beat for one main reason the others designs can’t do. The Whipple in bypass mode, ie idle, cruising around, etc is passing bypass air through one stage of cooling keeping the blower housing and rotors cool, all others only cool the air going through into the engine and recirculating already compressed air over and over and over at idle and part throttle getting the blower and rotors hot. The smaller the pulleys, ie more air, the more part throttle recycling of hot air goes on the hotter the blower gets in part throttle running.