JIM5.0

Thanks for the link, the illustrations of the helical screw lobes show what I was trying to describe.

Also, since there are no pulses of compressed air, the continuous compression evens out the heat created by compressing the air.

Simon1

I thought I had read something about that too. Roots move air between the blower case and the lobes, TS move the air between the screws through the center.

stealth_GT

How much hp does it take to drive a twin screw? From what I gather, it only takes 1hp to drive a roots..

onederful100

http://www.whipplesuperchargers.com/....asp?PageID=80
http://www.whipplesuperchargers.com/....asp?PageID=67
http://www.whipplesuperchargers.com/....asp?PageID=81
http://www.whipplesuperchargers.com/....asp?PageID=66
http://www.whipplesuperchargers.com/....asp?PageID=79

the new TVS rotors are very good too, numbers very similar to TS.
TVS is more efficient and gets a little more power with lower boost, TS is more efficient with bigger boost.
either one will get big power. but i havent heard of TVS making a bigger displacement blower to match TS SC like Whipple 4.0 or KB 4.2

http://mustangsdaily.com/blog/2010/0...rcharger-kits/

i am a big fan of Whipple, bc thats what i got. but i like the KB liquid cooled units too. KB would be my 2nd choice for a TS. the TVS are great SC too.

808muscle

If you are doing your research before you buy a SC, I hope you are considering more than just roots vs twin screw.

stealth_GT

http://il.youtube.com/watch?v=4ZEBwy..._order&list=UL

I'd say the Eaton 2300 TVS rotors can handle their own when it comes to the HP game.

onederful100

whipple pulley sizes and ratings
http://www.lethalperformance.com/05-...pulley-p-15041

302_GT

This was what I was led to believe. Which makes me wonder why so many people are fans of the TS. Also, all of the whipple comparison articles are on the older Gen 3-lobe SC's not the new Gen 6 4-lobe. For the guy's with forged bottom ends looking to make 20 psi+ the TS seems more beneficial.

But for the guys looking to keep the stock bottom end, the TVS kits would seem to be the better choice.

I do think a major disadvantage that the roots have is displacement. TS can advertise the 2.3, 2.9, 3.4 and 4.0 vs the roots only going up to a 2.3

302_GT

LOL, Nice. I know most of the GM and Dodge guys use the Roots style SC's. Again, the reason I'm looking for arguments from both sides.

302_GT

I'm taking a few different things into consideration. I do plan to rebuild the block and am looking to make it near 650 rwhp. And I've seen companies get close to that off the stock 5.0 block with a roots 2.3 blower (JDM and VMP). and several do it off the TS, but it's always with the larger displacement SC's.