Is it completely stock?

-Cody

 

Absolutley, it's a completely stock "imagined" S/C . As you can see the management needs a bit of work after 6K or so, but for an actual "imagined" dyno run, not to bad. Soon I hope to have "imagined" power bumped to about 280 RWHP and fattened ^up^ both the torque and HP curve all a long the rpm range.

The only problem is, every time I wake up in the morning, I forget how I "imanaged" to do that

 

LOL - sad but true . But - think of all that money we saved by using our imaginations !

 

OK Spin - sell us an SC right now. CC is out of the wallet.
I'll send my number over, but I expect it to be at my door this week. I'll pay for 2nd day.
Oh, it better be complete, too. EMS, all mounting hardware, etc.

 

MM howd that homemade turbo come out? Still got it installed?

 

It rocks.
Tons of threads on it all over the place. I just built a better manifold a few weeks ago.

Funny how there are no home-brew superchargers, either.

 

is it puttin out more than greddy?

 

MM, when's the next dyno day? (wondering if you can dupliate the #'s from last time)

 

I'm going on Saturday.

 

there are a few SC's floating around now. the procharger version in .au and the rotrex one from knigthsports. also there's the blitz one, and the others in development such as axial flow, and roots style ones. there are probably just as many SC kits out there than turbo kits.

I wouldn't mind finding out what the centrifugal SC's deliver. there's enough engine managment options out there now so you don't have to be worried about tuning problems.

here is a interesting development two speed sc

 

All of which are prototypes, Australian or Japanese market only or one-offs.
The KnightSports is the closest to a "production" unit, and they will only sell them direct and install.
Blitz pulled theirs from market.
HKS gave up when they ditched Rotrex. Apexi did likewise.
Hymee and Axial are still no-shows.
Petit is still in "pre-production" as well.

There are no superchargers on the market right now that one can purchase today.

 

damn MM, you have some NICE pics you rotate in and out of your avatar. I'd like to see where they come from and see the originals.

now back to your regularly scheduled debate

 

well none that US rx-8 owners can buy :D

 

Not significantly. Full boost from the bottom end to redline. The best parts of roots and centrifugal blowers. The main drawback of the twin screw is that it's expensive.

 

And fragile.

 

Would a centrifigal supercharging(turbo on a pulley) be better for a high reving engine like ours? A lot of people seem to hate centrifugal chargers but at high RPM woudln't they be less parasidic?

 

The faster you spin a centrifugal, the higher the parasitic loss.
However, a centrifugal would be great up top - but it would deliver zero boost below 6k if it were properly geared for 9k.

 

how can we be expected to listen with that distraction of two girls kissing with a boob about to pop out of its confinement right in front of us when we are trying t o read your posts? it makes concentrating really difficult.. for some i mean... i can ignore it....

 

would the answer be turbo lag or one exists and the other doesn't

 

Its a red herring. Or some other fishy distraction...

Well, (B) is a possibility since I've never experienced (A).

 

so your saying you have never experienced turbo lag?

 

We get full boost under 3,000 rpm... you're out of 3,000 so quickly there really isn't any way to get lag.

 

you may be able to compensate for the lag but you always have it with a turbo. just like you can compensate for the lack of torque and power with a NA 8 by reving it more.

I haven't experienced a factory turbo that doesn't give a sense of lag due to non-linier power delivery. wrx's have it, my Vauxhall turbo has it, the turbo diesels at work have it. they all boost from 2500-3000rpm but they don't make any real power there and idle is 1000rpm. that's a lag gap.

but I don't want this thread to diverge in to the turbo/sc debate. they both have their peculiarities. this thread should be about sc experiences and performance.

I think the possibility of a smooth building of boost and hence torque and power from a centrifugal sc would be nice to drive hopefully I will get a chance to experience one.

 

by far this is the best imho... and pm...

beers

 

Apparently, someone needs to learn what turbo lag actually is.