supercharged H22

[Dani Filth]

not just the parasitic loss but the restriction. that supercharger is compressing the charge when its spinning fast enough but until then its just in the way
those numbers were just an example. i have no idea really

[cincy90h22]

I don't really have any evidence of the loss either. I'm sure it exsists, but in my searches I've never seen any comparisons, before the charger; after the charger (no boost, just belt) you know what I mean. I'm not about to test it either, but ill sacrifice some to make some if anyone were to find actual dyno sheets somewhere showing the actual loss I'd be curious to see them. Mite be hard to prove though, I would imagine the higher rpm, harder the charger works, draw may increase. ?

[Smokinspeeds]

I'm gonna give you a simple parrallel to tell you why you thinking parasitic loss is almost nil is no good with it not pushing boost. I have a hand crank flashlight, when the bulb is unscrewed it takes no force to spin easily, when it is on there is instantly much more drag. with boost your fighting compressing the air into the motor, the compressor side is not going to be spinning so freely and in turn it will be pulling more off the motor.

[8ball]

I'm gonna give you a simple parrallel to tell you why you thinking parasitic loss is almost nil is no good with it not pushing boost. I have a hand crank flashlight, when the bulb is unscrewed it takes no force to spin easily, when it is on there is instantly much more drag. with boost your fighting compressing the air into the motor, the compressor side is not going to be spinning so freely and in turn it will be pulling more off the motor.

So true. With out the compressor actually compressing the air going INTO the engine then you cant accurately state just how much the supercharger is taking for the "power" of the engine.

This is what you are saying right?

[cincy90h22]

So true. With out the compressor actually compressing the air going INTO the engine then you cant accurately state just how much the supercharger is taking for the "power" of the engine.

This is what you are saying right?

Yea that's what he's saying.. I agree totally, the drag or loss, prolly increases with rpm or boost.

[toycar]

Yea that's what he's saying.. I agree totally, the drag or loss, prolly increases with rpm or boost.

Once the pipes build pressure the compressor has to work harder to maintain positive pressure, so yes you are correct.



Im curious what kind of speeds you have to spin that compressor to see the CFM numbers you are talking about previously in this thread.

If that thing pushes twice the air as a 16g turbo, you should be able to produce some numbers that will cause your h22 to explode if your not careful.

You are running OEM rotational assembly right? I'd probably be wrapping my head around the idea of something forged in the near future.


What kind of charge temps are you running into?

Nice build op!

[cincy90h22]

On my street tune with no Hood intake air temp peaked at 91 degrees. With my previous calculations compressor speed should be 42000, Max speed for the charger is 51000 I believe. Once we get it tuned and I see boost levels, I will prolly look into the compressor maps and compresser speeds more to better 'tune' the charger and put it in its peak range. Still at this point I'm not sure what to expect since its never been done before.

[Smokinspeeds]

...

You are running OEM rotational assembly right? I'd probably be wrapping my head around the idea of something forged in the near future.
...

Nice build op!

+1, don't want to have your motor explode on you...

[cincy90h22]

For sure.. I have a jdm block to build later, not sure which direction to go with it though. It needs a crank.. Stock stroke or stroker LOL.

[cincy90h22]

short vid I made on my phone.. see.. its alive lol. You can hear the whine at idle, its pretty quiet though. More to come after the dyno.

http://s295.photobucket.com/albums/m...8-16-05-13.mp4

[SNOOZE]

drool!!!!!! Are you gonna hit the track?! Get some 1/4 times?

[10thAnnivCB7]

beast

[Smokinspeeds]

man sounds like a beast breathing low just waiting...

[cincy90h22]

drool!!!!!! Are you gonna hit the track?! Get some 1/4 times?

thanks.. eventually maybe...

[gloryaccordy]

Nice!