Ford Lightning - Roots style blower, Thunderbird-Roots. All s/c that ford uses are roots. and for the last time THEIR IS NO TWIN-SCREW CURRENTLY IN DEVELOPMENT FOR OUR 4.0 STANGS. If you can prove me wrong i would be more than happy to admit i was wrong b/c i would love nothing more than the propect of puttn a twin-screw s/c on my stang. If Saleen does anything for our 4.0s it will be CAI and exhasut nothing more.
well saleen did more than 270 changes to the gt so it should be alittle more than exhaust and cai :P
right its like the same thing as the vortec that is pretty popular around here. they are both centrafugial (sp?)... I wasnt wanting to go with one of those because they have lag like a turbo, but the draw off the engine like a normal supercharger, but they do have the possability of making the most boost, but since I am not really planning on going with more than like 7 psi I figured the twin screw would be what I want. I was confused about the twin screw and the roots and thought that they were the same thing, but after reading about it they are different and the twin screw is much better, but it is more expensive. Didnt they make a twin screw for the 4.0 on the explorers? what did they have on the ford tunderbolt? is it even F/I?
next time your in Michigan we'll go for a ride and see what you think of the centfif... I was leary about getting a cetrif with an automatic... Boy, my fears were unfounded... I couldn't be happier with my setup! LOL!
well ive taken apart a GM roots type supercharger (for the 3.8.. and ive seen pictures of "twin screws") and to me it just seems like they are changing hte impellor types.. i perosnally wouldnt name it something different.. i dont even think its named something different on www.howstuffworks.com i think they only list roots and centrifugal.
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05 V6 black,std, red int alpine CD9835 10" rockford P2 directedaudio x2600 amp xenon rear window scoops eibach pro-kit Dual GT take offs
in that link there are some pcitures.. like i said , they are the same design with different impellors.. but you guys are right though.. it does list them differently
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05 V6 black,std, red int alpine CD9835 10" rockford P2 directedaudio x2600 amp xenon rear window scoops eibach pro-kit Dual GT take offs
I was at saleen planning to have some work done. (Which Never happened) Anyways one of the engineers was telling me their getting the tune right and their gonna take it down to the desert to test it out. They said by jan or feb. I asked what would be in it but they wouldnt tell me. so i decided to ask just sales people and the secretary. 2 told me it would have a cai 1 told me a supercharger. I dont know what to expect. I see probably a cai. It just seems to be cheaper and when i was there it seemed liek ALL the employees hated my v6 with a passion.SteveSaleen himself was the only one there who thought it would be cool to add some of the saleen stuff onto it.
EDIT: I do know it wi;ll have gears though because when we were talking bout swapping rearend and what not to get some saleen parts there they said their gears for the v6 wasnt computer tuned yet. So i dunno if that was a slip up or what. but the name was called V6 GT by all the employees.
oh jeese i might have to change my christmas list around
I was at saleen planning to have some work done. (Which Never happened) Anyways one of the engineers was telling me their getting the tune right and their gonna take it down to the desert to test it out. They said by jan or feb. I asked what would be in it but they wouldnt tell me. so i decided to ask just sales people and the secretary. 2 told me it would have a cai 1 told me a supercharger. I dont know what to expect. I see probably a cai. It just seems to be cheaper and when i was there it seemed liek ALL the employees hated my v6 with a passion.SteveSaleen himself was the only one there who thought it would be cool to add some of the saleen stuff onto it.
EDIT: I do know it wi;ll have gears though because when we were talking bout swapping rearend and what not to get some saleen parts there they said their gears for the v6 wasnt computer tuned yet. So i dunno if that was a slip up or what. but the name was called V6 GT by all the employees.
oh jeese i might have to change my christmas list around
Heh I agree i doubt they will go with the S/C But i know they will add tons and tons of stuff to the v6. It has to compete with the cs6 after all =)
hey I will definatly take you up on that, I would love to go for a ride in "The Mistress", but I was by no means bashing the centrifugial (sp?) supercharger... it will provide the most boost out of any supercharger and especially at WOT in an auto... when your are at WOT after first gear you stay about 4000 RPMs so you are probably getting about full PSI after first gear... now that I think about it, that is probably better for gas mileage when you dont want to kick it. I was just quoting what was written about them in Wicipedia... its just if I wanted to get something where boost depended on RPMs I would probably go with a turbo, or even twin turbos since God knows we have enough room under our hood! I swear we could transport a family of mexicans across the border under our hood!
well ive taken apart a GM roots type supercharger (for the 3.8.. and ive seen pictures of "twin screws") and to me it just seems like they are changing hte impellor types.. i perosnally wouldnt name it something different.. i dont even think its named something different on www.howstuffworks.com i think they only list roots and centrifugal.
GM probably means Eaton... Eaton is a "modified" Roots. From Eaton's website:
The roots supercharger has been around for a long time, how is the Eaton supercharger different? The Eaton supercharger is essentially a Roots blower pump, with one substantial design wrinkle; each rotor has been twisted 60 degrees to form a helix. The two counter rotating rotors have three lobes, which intermesh during operation. These twisted rotors, along with specially designed inlet and outlet port geometry, help to reduce pressure variations resulting in a smooth discharge of air and a low level of noise during operation. This arrangement also improves efficiency over traditional Roots superchargers. With helical rotors and an axial inlet the Eaton supercharger can be spun to up to 14,000 rpm, thereby reducing package size.
hey I will definatly take you up on that, I would love to go for a ride in "The Mistress", but I was by no means bashing the centrifugial (sp?) supercharger... it will provide the most boost out of any supercharger and especially at WOT in an auto... when your are at WOT after first gear you stay about 4000 RPMs so you are probably getting about full PSI after first gear... now that I think about it, that is probably better for gas mileage when you dont want to kick it. I was just quoting what was written about them in Wicipedia... its just if I wanted to get something where boost depended on RPMs I would probably go with a turbo, or even twin turbos since God knows we have enough room under our hood! I swear we could transport a family of mexicans across the border under our hood!
Did not take it as you bashing the centrif.... Like I mentioned... I was very concerned about lag myself!!!
Well Im new to this mustang forum but not neccesarily new to Supercharged vehicles. Particularly fords. Fisrt of I wanted to reply to thrills statement "as i don't know of any v6 twin-screw out for any car." Im not calling you out one bit on this but just wanted to pass along some info for you. There are some not many but few twin screws available for V6 cars. I just recently bought my buddies 91 thunderbird SC that happens to have a 1.7L AR twinscrew. Also know that a few other SC owners have made upgrades to twinscrews as well. My SC competition out east has a 2.2L AR TS. Like I said im not calling you out. Just posting to let you know thata few do actually exist. As far as supercharging witha roots or roots style blower aka twinscrews (yes it is a root style blower but only because of the way it mounts), its not so much of is the sc made for my car. The thing is any roots would about work. Its not so much the charger itself as the length of the nose shaft and the lower intake. the twinscrew on my car wasnt specifiacally made for it but was a close close match to the lower that we did very little machining to bolt it on. Also when you add an sc particularly a roots, you wanna watch how much compression your engine has before and after the install. I had another friend thought it would be a good idea to bump his compression to 13.5:1 and add a Kennebell twinscrew with 22 lbs of boost. It was funny to watch the expression on his face after he blew up. We tore the block down and couldnt really figure out what happened till i compared his head bolts to the new ones. His original bolts stretched a 1/2 inch from the pressure and his 2000 dollar heads (cheap chevy parts my ***) were warped. Just food for thought. Ill ask around my SC forums to some experienced ford sc builders and see if they know of anyone doing custom machining like that. OBTW my SC I bought from my friend was dynoed bout 2 months before I bought it. Of course alot of mods were added but with a twinscrew the HP went up from 422 to 476 RWHP. And thats a 3.8L SC block. So if we can figure out a 4.0, its would be quite easy to run on stock Vettes. Just food for thought
< Message edited by Storm_Dragon -- 10/8/2006 1:12:47 PM >
Talking about twin screws, awhile ago I was researching and had read in a Ford Ranger 4.0 forum they talked about it would be possible to custom fab a Kenne Bell twin screw supercharger 1.7L or 1.5L KB supercharger to the 4.0 if someone wanted to.
One example of what a KB TS supercharger can do on a V6 4.0L.
KB 1.33L Supercharger ( 1.33L KB super charger smaller than the 1.5, 1.7 mentioned above for the Ford Mustang 4.0. Jeep Wrangler V6 4.0 Running only at 8.5psi. 252-RWHP Tq- 362 FT. LBS!!!!!
Ok with the larger KB 1.5 or 1.7 on a Ford 4.0?
You might be looking at IMO @ 8.5psi around 340rwhp and around 390 ft lbs on a Mustang 4.0. KB claims 72% increase with thier S/C’s.
The above figures for the Mustang 4.0 were caluculated on a manual trans Mustang 4.0 using a base of 200rwhp then factoring in a 70% increase vers claim of 72% increase.
Don’t forget the twin screw has the advange of the hp & tq curve (shelf) along with the numbers above instant boost vers centi and turbo..
Good find TJ and did you see some of the specs on that jeep TS. HOLY **** one aplication was about a 120% gain. Anyways like your car. IM thinking of ordering an 07 premium with pony package and interior upgrade package. Couldnt put that on my sig for space though.
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RE: Roots Style Supercharger - 
