M20 Twin Screw Supercharger System Interest

[xLibelle]

Lysholm>>>>hEaton. The screw design is much better than the roots. The reason people use roots blowers is because they come on a lot of production cars so they are cheaper to get your hands on. [true] Also they have slightly different characteristics. The roots style gives you a torque curve which is very steep in the lower rpms and then is essentially flat after that. [really depends on the engine you bolt it up to] The lysholm style (screw, whipple) is more linear meaning you build more torque as RPMs increase, although no where close to a centrifugal type setup.


The torque onset of the roots makes it pretty hard to launch a car decently [not true] and it can really put the car into oversteer in the corner (the rear end passes you). [which means you dont know how to drive] I prefer a lysholm style because the torque onset happens with increasing RPM, which generally means you are moving and the power you are creating is going towards accelrating the vehicle rather than lots of wheel spin and some acceleration. You only need to make as much power as you can put down at that time.

Thats just my perspective though.

and ten bucks says your perspective is unexperienced

either way, you save thousands by using the roots over whipple and youd be impressed with roots as well. that immediate low end torque response is fun

[wazzu70]

Lysholm>>>>hEaton. The screw design is much better than the roots. The reason people use roots blowers is because they come on a lot of production cars so they are cheaper to get your hands on. Also they have slightly different characteristics. The roots style gives you a torque curve which is very steep in the lower rpms and then is essentially flat after that. The lysholm style (screw, whipple) is more linear meaning you build more torque as RPMs increase, although no where close to a centrifugal type setup.


The torque onset of the roots makes it pretty hard to launch a car decently and it can really put the car into oversteer in the corner (the rear end passes you). I prefer a lysholm style because the torque onset happens with increasing RPM, which generally means you are moving and the power you are creating is going towards accelrating the vehicle rather than lots of wheel spin and some acceleration. You only need to make as much power as you can put down at that time.

Thats just my perspective though.

[IanBMW]

If there was a stage with high boost to fill the needs of my 2.7 Stroker 8.5 to 1 ratio beast then I would be down. We need updates ;)

[e28forlife]

I would be so interested.

[Fidhle007]

Any news on this setup? I'm still really liking the idea of supercharging my M20 and this seems like a great setup.

[vivalegreg]

yes yes yes

[Ball325]

i want a mild supercharger system, I dont want crazy power but i want more. if this system is a reasonable price i might do this instead of 10.8:1, Porting, ITBs, and MAF.

[n12frost]

like to see the dyno sheets and how well the car runs after the instalation on the s/c i cant stand turbo's. well they are nice for power but i like the power curve of a s/c better,it starts right from the bottom and goes smoothly(hopefully) right to the top.unlike turbos that kick in at 3k rpm. i would like to see some tq in the m20.

[Hartge_H27]

Hey all i am new to the forum. but living here in germany you get to see the people with S38 M5 motors, or the boys from stockholm with there turbos. So think for me i would love a SC. I cant wait for it to come out.

[JJGBMW323]

What supercharger is ideal for use?
i am currently building a roots M62 powered 2.7i but was wondering what everyone else is expecting. If this is the SC that is preffered, then i will be more than happy to provide mounting hardware once mine is completed.

I am not sure which supercharger is prefered, but I want one that is kick butt,
and that will bolt to 2.8 m20 with no drama.

There are a lot of new superchargers on the market. The twin screw supercharger, already mentioned in this thread seems pretty awesome.

I would be interested in seeing your application, parts, prices, and a dyno sheet, xlibelle.

[xLibelle]

What supercharger is ideal for use?
i am currently building a roots M62 powered 2.7i but was wondering what everyone else is expecting. If this is the SC that is preffered, then i will be more than happy to provide mounting hardware once mine is completed.

[DrMcDave]

awesome

[E30_pilot]

I'm not speaking for Greg,but he's a busy guy.He's also working on many other projects that the supercharger was to open up.Along with project cars.

I'm not sure he want to start showing pictures of the SC just yet due to competition.You guys know what I mean?

I'm sure the Supercharger sure be near completion and it sure will be worth the wait guys ;)

[JJGBMW323]

I am still waiting for a kick butt supercharger to bolt onto my 2.8 stroker...

will this project ever get done???

[525_M20]

Just wondering the status of the project. Any pictures yet?

Mark