WOMP supercharger???? does anyone know anything about it???

[anarchistchiken]

Gotcha. Matty's up and running already thankfully with AWR mounts all around and new MazdaSpeed cams. But thanks for the offer

 

[TurfBurn]

Yep.. no problem... it sounded like further up in the thread he still needed one which I could have provided quickly.. Looking forward to what he does with it over time. Looking at the dyno right now.

 

[TurfBurn]

Nice even dyno. good torque curve and everything.
http://www.msprotege.com/forum/attachment.php?attachmentid=40842

(EDIT: And might I add for the price that Ken has it at it's a damn good package.).

 

[Replica]

Nice curve but 145whp....sigh..hopefully it'll make at least 200whp at 8psi. Well tuned hondas and such make a healthy 250whp at around 8psi these days, hopefully after the Womp kit is out for a while people can get some great numbers out of it.

 

[TurfBurn]

Nice curve but 145whp....sigh..hopefully it'll make at least 200whp at 8psi. Well tuned hondas and such make a healthy 250whp at around 8psi these days, hopefully after the Womp kit is out for a while people can get some great numbers out of it.

Time will tell... one P5 on a turbo managed to pull out 200 whp at 7 psi... which is amazing...
http://www.msprotege.com/forum/showthread.php?t=114024&page=1&pp=15

I'm sure time and tuning and the like will yield very good results... Maybe I can convince Anarchist to go Microtech and WOMP and then I'll help him finagle his tune and see what he can do . Ken would be able to get him both Also depends on supporting mods.. headwork and the like... never know what full work could really pull out of the system...

 

[TurfBurn]

Well off the garage for some tinkering... I'll check back with you guys in a couple hours and hope I haven't been lynched for the data etc...

 

[anarchistchiken]

Yeah my plan is to eventually have a fully built motor and crank the boost a little bit and see what we can reall get out of it. But that's probably a ways down the road. Unless I win the lottery.

 

[wwpms6]

i remember reading somewhere that matty said 7psi should be an additonal 100whp.

 

[anarchistchiken]

yeah with 4.5 yielding 60 over stock, 7 psi should make about 200 whp.

 

[wwpms6]

i'm hoping all this will be done by xmas and my bday! lol i asked my mom and everyone for the to help me get the rest of the kit for my bday/xmas present

 

[Scotty878]

Yeah my plan is to eventually have a fully built motor and crank the boost a little bit and see what we can reall get out of it. But that's probably a ways down the road. Unless I win the lottery.

My plan also....

 

[anarchistchiken]

Heres the problem with centrifugal supercharging:

Pulled from: http://www.coloradocobras.com/whipple/superchargers/centrifugal-superchargers.html


In the end you only are really making peak boost... not anything midrange/low end... it can't touch a turbo that is making full boost by 3K and holding it to redline... peak power is one thing... but never underestimate area under the curve. If you lookup the output of a centrifugal supercharger you'll see the exponential boost curve... and you'll see the issue.

Matty has something to say in response to this...

On my system I only made 4.5psi so there was not a lot of boost to be had in the low-mid range. That is true but saying that a cent. SC makes ALMOST NONE is stupid. It's nominal.
To use generic numbers: If you make 6psi @ 6,000rpms you'll make 3psi @ 3,000rpms. If you're averaging 13whp per psi. Then you're gaining 39whp @ 3,000rpms. That's HARDLY "nothing" Also they claims that Cent. SC's are noisey.....everyone in GA annd AL has heard my car...there is NO noise.
lastly, the manner in which a Cent. SC adds power is the SAFEST FORM OF BOOST YOU CAN GET. It only adds peak boost at redline when the rods can handle it best. Hitting full boost in low rpms is what destroys a lot of these weak protege engines.

Now, before anyone gets angry or defensive, centrifigul superchargers are usually noisy, so the site you quoted was right about that. However, the Powerdyne blowers we're using have a unique kevlar belt drive system, so there are no internal gears, and hence no whine.

 

[TurfBurn]

If someone doesn't like them becaues of noise.. LOL... that's half the fun! . Do you guys have a specific boost curve for this supercharger? At 4.5 what does it do across rpm's... at 7 what does it do... at 14 or whatever you'll eventually do what does it have across the rpm's?

I do agree for the most part about it being safer boost... it's cooler, it comes on later, and it'll be smoother on the trans etc... so yes it is safer and he is certainly correct...

The only thing i take issue with in Matty's post is that a centrifgual is typically exponential in it's boost curve... so if it makes 6 at 6000 rpms, it isn't a straight deal where it makes 3 at 3000, 1.5 at 1500, 4.5 at 4500 etc... that would be linear which is not correct unless the vane structure of this particular compressor wheel is allowing for that somewhere.

 

[TurfBurn]

I did some more checking... apparently powerdyne runs a slightly different wheel the the "other guys" which gives up some efficiency but increases low end boost... however it is still not linear... just described as "more linear"

 

[Rism]

yea lets put a twin screw SC on the protege! Im sure the tranny would last long then. Im sure it would fit too.

 

[TurfBurn]

/sarcasm

 

[anarchistchiken]

yea lets put a twin screw SC on the protege! Im sure the tranny would last long then. Im sure it would fit too.

It's been done.

 

[RyanJayG]

and yeah, twin screw SC's are typically a lot more compact than roots blowers as well.

but hey, i'll be the first to admit its not practical on a 3rd gen protege. there just isn't enough room unless you do some crazy jack-shaft turning it on the drivers side. which imo isn't a good design. to his credit Matty designed the SC setup to best possible way it could be put on a protege. I just like my AC too much.