Whipple Supercharger Rating

[Lextreme II]

What does this mean?
Displacement 3.3L/REV / XXX CFM/REV.
Displacement 2.3L/REV/0.812 CFM/REV
Displacement 1.6L/REV/0.565 CFM/REV

Is that mean the L/Rev is an addtional cubic increase?

 

[turboandrew]

It is what it is, volume of air displaced per 1 revolution on the supercharger. It is an absolute amount, not addtional. It is quite possible to have a supercharger restrict flow to a motor.

 

[Miles B]

The 2.3L is the one I am looking at. Kenne Bell says the Autorotor 2.2 pushes the same amount of air with 8-9% less consumed power. The Autorotor also has bigger bearings and shafts, more lobes per shaft, and a bunch of other good stuff. It also has a bigger price tag. I believe the Whipple 2.3 is going on the Ford GT40 or whatever it is called, and the Mustang GT500 in a year or so. I believe the Whipple is rated up past 13000RPM, so 13000x0.0812 = 1055.6 CFM

 

[Lextreme II]

Miles,

What do u think of the Whipple 1.6L? Good enought for the 4.0?

 

[Miles B]

Probably about the same potential as the M90. The 2300 is only USD250 more though, and should be good for 550-600rwhp. Plus the smaller unit will have the problem of having to run at redline for low boost.. this would drop reliability and may make the pulley choice hard.

The FAT LPG car apparently used a Whipple 2100 for a quoted 15psi.


I can't find ANY DAMN PRICES on the Autorotors.

 

[turboandrew]

I am looking at the Whipple 2300AX as well. Too bad you can not buy the autorotor/kenne bell by itself (I have asked them). It looks like autorotor and whipple's maufacturer (lysholm) are owned by the same parent company. http://www.opconab.com/index.asp?sPage=1&langID=2&cID=16

 

[Miles B]

Apparently Whipple buys the Lysholm, Kenne Bell buys the Autorotor. Autorotor are supposedly a larger company, and a subsidiary of Opcon. They licence the basic technology from Lysholm. Then recently either Autorotor or Opcon itself bought out Lysholm. I have seen an Australian price for the Autorotor 2.4 of about AUD3700. I don't have an Australian Whipple price to compare though. The Whipple 2300 is about USD1750.

 

[BlownV8]

http://www.hi-flow.com/
Contact details for a company that can supply auto rotors. Very nice bloke, really knows his stuff.

 

[turboandrew]

Unfortuneatly I really need a US supplier for autorotor (and it looks like the 2.2 autorotor is about $1000 more as well).

This is the most in depth comparison I have seen between the autorotor and lysholm, but be aware, it is very byassed (by kenne bell): http://www.kennebell.net/techinfo/ford-techinfo/AUTOROTORvsLYSHOLM.pdf

Clearly the autorotor is "better" but I am betting the lysholm is quite "good enough". Notice they drove the 2.3 lysholm at 13,00 rpm with no issues, at the same discharge temp as the autorotor, and only 8 HP more to drive. I'll save the $1000 and give up 8 HP.