I hope the supercharger for the CL is not like this. If you look at the dyno on Comptech's website you see that there isn't even an increase in HP or torque until 4000rpm! What a total and complete waste of what a supercharger is supposed to be for!

http://shop.innercite.com/comptech/new.html

 

Really not surprising...a centrifugal supercharger on a motor that makes no power down low.

Total waste? Were you expecting the supercharger to make it a stump-pulling torque monster or something?

 

yeah, no real suprise. All power for the s2k isn't until later. I would expect that the SC-CLS will see a real difference after the 3800; unless they took out the dual intake manifold. I'm sure we'll have a good jump in torque. BUT BUT BUT BUT, if you take a look at the SC for the NSX (different engine) damn!!!!!!! 74 hp increase at 7800 rpm.....wow. The CLS will be a beast.....if the trannies can handel the power Tough choice, either trade in for a 6speed and then add the SC or level-10 tranny and t-converter upgrade along with SC. Would probably cost the same.

 

The CLS blower will be a positive displacement blower, right?

 

You must have never driven an S2000. Having the power start at 4000rpm isn't a problem. You spend very little time below that range. With the F20c, you are lugging the engine below 2000 rpm anyway. Even every day puttering around town gets up to around 5500rpm.

It is not geared anything like the CL. The supercharger for the CL will have to make more power down low or it would be of little use.

 

I don't think a roots or screw type will fit between the hood and motor, even with a redesigned manifold, so it's prolly gonna be a centrifugal with a cross-engine drive shaft (the intake is not on the same side as the accessory drive pullies).

 

yup, but comparatively.....the fun really begins after 5k hehe

 

I replied to the same subject matter before. The use of a centrifugal SC in the S2k was not by choice. Comptech engineers had wanted to use a positive displacement one ie. Eaton Roots-Style blower, because what the s2k lacks the most is torque....and FYI, Jake...most people with the s2k would gladly trade some of that top end hp for low end torque...
Comptech had said that they planned on using some kind of blower which would add torque...which I believe will be a twin screw set-up because they also added that they wanted to keep the CL-S intake manifold.

 

if this is true, it's gonna be an underhood packaging nightmare. this setup is what they've used on the nsx 3.2l, but the nsx's engine cover has a bit more clearance over the engine than the cl-s. one more reason for it taking so long to develop, I guess...

 

As long as it's not a centrifugal SC...that thing is almost useless....that's why the S2k 1/4 times didn't improve much when they slapped it on...

 

Ugh...that's a tough packaging setup.

 

I was just commenting on the fact that most of the time a supercharger gives an increase in low end torque, exactly what the S2000 needs. While I understand that the "motorcycle" engine of the S2000 needs to be kept at high rpms to be driven, when I had thought of getting a supercharged S2K as a fun car I was hoping that it would gain more low end to make normal driving more bearable.

 

Yup, the s2k is just a big motorcycle motor....

 

sounds like a twin sequential turbo is what you need... a low pressure, quick-spooling turbine for the low end boost and a higher pressure, higher flow (and unfortunately, slower-spooling) turbine to keep the boot levels up at 8000 rpms.

there, problem solved...

 

Ah who the F cares, our tranny can't handle any REAL power anyway.