Cosworth Supercharger Owners Thread

[Jaden]

Originally Posted by weederr33

But the real question is, what if you took the Cosworth supercharger, spun it up to say 25,000 rpm, and then added a turbo kit for a nice twin-charged unit?!

Well, I guess technically it would depend on how you're twin charging it. If you're compound boosting it, you wouldn't want to run the s/c at that high an RPM. You would want to maximize the low end torque of the s/c while getting the turbo in as soon as possible. The key would be properly sizing the turbo.

When feeding the turbo into the s/c, you would want to have a turbo that provides enough airflow at the boost pressures the turbo ALONE will be providing to give you the total power output you desire.

The problem with this becomes if you can spool the turbo too quickly, you'll be providing greater airflow at lower rpms because the turbo will be providing more of the TOTAL manifold pressure. It becomes complex.

Boost control by rpm to limit total pressure early on can control that.

Jaden

[weederr33]

Originally Posted by Jaden

Well, I guess technically it would depend on how you're twin charging it. If you're compound boosting it, you wouldn't want to run the s/c at that high an RPM. You would want to maximize the low end torque of the s/c while getting the turbo in as soon as possible. The key would be properly sizing the turbo.

When feeding the turbo into the s/c, you would want to have a turbo that provides enough airflow at the boost pressures the turbo ALONE will be providing to give you the total power output you desire.

The problem with this becomes if you can spool the turbo too quickly, you'll be providing greater airflow at lower rpms because the turbo will be providing more of the TOTAL manifold pressure. It becomes complex.

Boost control by rpm to limit total pressure early on can control that.

Jaden

I was more or less being sarcastic. But it is interesting to think about the idea of twin-charging a twin.

[sly]

Originally Posted by weederr33

But the real question is, what if you took the Cosworth supercharger, spun it up to say 25,000 rpm, and then added a turbo kit for a nice twin-charged unit?!

I think that would be dialing up to 11...

[Jaden]

Originally Posted by weederr33

I was more or less being sarcastic. But it is interesting to think about the idea of twin-charging a twin.

working on a different project now, but eventually I plan on using a built motor and compound boosting it.

As far as the 1320 vs the 900, you would want the 1320 in a compound boost setup because of efficiencies... Compound boost has a tendency to give higher IATs, so you want the S/C to be as efficient as possible at the boost levels you'll be at.

On the setup I'm designing, I'll be running max boost at about 30 psi, so I need the s/c to be efficient at about 12 psi.

Jaden

[ajc209]

There has been discussions about twin charging with the cosworth setup. The heat exchangers and 4 lass radiator are very effective on this kit which would really help in that situation.

[weederr33]

@Matt@Cosworth are you guys going to do any sort of calibration modifications for the new Toyota 86 (as it will be in the States, too) and BRZ?

[Matt@Cosworth]

the calibration will be updated to use the latest ROM files so anyone can carry on using our kit
regarding the twin charging setup how about 1 of these:

http://www.pistonheads.com/gassing/topic.asp?t=1302275

[ajc209]

Originally Posted by Matt@Cosworth

the calibration will be updated to use the latest ROM files so anyone can carry on using our kit
regarding the twin charging setup how about 1 of these:

http://www.pistonheads.com/gassing/topic.asp?t=1302275

I KNEW IT!! Was thinking of that engine when you said you'd ran it at 28000 rpms.

Lord knows how much I'd give for an engine that can rev to 11k rpm and still be drivable aeound town. It sound stunning.

[weederr33]

313 hp per litre from a 1.6L twin-charged engine? That's pretty freakin' sweet. hmm 313 sounds like a nice number. Cosworth, let our engines make 313 hp!

[Matt@Cosworth]

Hello

313? bit more boost and some steel rods and you're there

as to how the CX 75 sounds see here

[ame="https://www.youtube.com/watch?v=nG4gA-Do4SE"]Jaguar C-X75: We Drive Jaguar's Prototype Hybrid Hypercar - XCAR - YouTube[/ame]

from about 8K it doesn't sound like a 4 cylinder at all

[ajc209]

It sounds stunning. I don't know why but ive always been a fan of the smallest engine possible reving as far as possible to produce silly power. So the 10k rpm 1.6L appeals to me and with the motors providing 400hp alone, it should pull like a fighter jet from low rpms.

I really hope we'll see more engines like this in the next few decades but I suspect to get the power they'll just up the boost levels and keep revs relatively low :-(

[weederr33]

It's a damn shame they won't mass produce the C-X75. It's a marvel of engineering, and I'm not even an engineer haha!

[Sylvas808]

This supercharger has been on my radar since I first heard about it. Looking at all the online shops they are all saying out of stock, or back ordered for months. I'm almost ready to make the leap, but not looking forward to dropping that kind of cash and then having to wait for another 3-4 months for delivery. Are they having production issues or is the demand just that high?

[ajc209]

Now have the brakes to handle all that power at the track..... on street pads







Unfortunately I dont have a track video to share as soemthing went wrong with my dash cam