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New E55 Supercharger power pulley/clutch!

 
Old 11-16-2011, 01:36 PM
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05 and it is hard to do a burnout.
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Old 11-16-2011, 02:06 PM
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Originally Posted by Johncy2000 View Post
05 and it is hard to do a burnout.
and you have a TCU flash?
i would think with a TCU flash it would be easy to do a burn out
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Old 11-16-2011, 02:18 PM
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Man, I hope someone gets this s/c pulley made!
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Old 11-16-2011, 02:32 PM
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Originally Posted by shardul View Post
and you have a TCU flash?
i would think with a TCU flash it would be easy to do a burn out
LOL havnt tried doing a burnout yet with the TCU. I'll give it a try sometime. Before it was kinda hard to do at the track. I would floor it with the brakes applied and it would go nowhere.
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Old 11-16-2011, 02:36 PM
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My 05 will light them right up instantly but only for a second then it cuts power. I always just powerbrake the car for a second then let off the brake and stay in the throttle to spin while pulling forward to the staging light at the track.

Click
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Old 11-16-2011, 02:36 PM
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Subscribed for both ESP overide and the pulley.

Thanks Brooke for making this happen.
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Old 11-16-2011, 02:40 PM
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Originally Posted by urbamworm View Post
My 05 will light them right up instantly but only for a second then it cuts power. I always just powerbrake the car for a second then let off the brake and stay in the throttle to spin while pulling forward to the staging light at the track.

Click
That was a great burnout worm! Thats what I should have done at the track. Next time I will let go of the brake and hammer it.
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Old 11-16-2011, 02:48 PM
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Originally Posted by shardul View Post
and you have a TCU flash?
i would think with a TCU flash it would be easy to do a burn out
Yes, you would hope that would fix that launch managemnt but must have not.


I should have a an exact weight reduction by using the new Super S/C pulley. Should be at least 30% or more of rotational mass removed!! That means less load on the engine and about 2 times less on the Supercharger! Rev up should be quick/crisp, boost will come kick in lower and quicker.
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Old 11-16-2011, 02:54 PM
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I know what I'm getting for Xmas!!! Power Pulley!!!
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Old 11-16-2011, 02:55 PM
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What was the price on these again?
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Old 11-16-2011, 03:04 PM
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I am a little confused so set me straight gents. Is this esp intervention (boost bleed) only seen with cars running more boost than stock (05 & 06)? What is the stock max boost anyways?
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Old 11-16-2011, 03:07 PM
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Can you tell us what the diameter of the new S/C pulley is targeted to be?

87mm???



-G
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Old 11-16-2011, 03:27 PM
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I believe a 6-8mm decrease. Brooke stated that running a 180mm lower and the smaller upper would be equivalent in running a 186-188mm lower but would rev up WAY faster. Adding this plus a stall and TCU upgrade, would make things even more violent.
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Old 11-16-2011, 03:39 PM
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Originally Posted by Exotic-metal55 View Post
Yes, you would hope that would fix that launch managemnt but must have not.


I should have a an exact weight reduction by using the new Super S/C pulley. Should be at least 30% or more of rotational mass removed!! That means less load on the engine and about 2 times less on the Supercharger! Rev up should be quick/crisp, boost will come kick in lower and quicker.
sounds like you guys in TX are on a tear with the new mods

Any future plans to experiment with adding 4matic to one of these 55's to put down all that extra power without having to DD with drag radials?... i would love to see a AWD w211 e55
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Old 11-16-2011, 03:44 PM
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Originally Posted by gaspam View Post
sounds like you guys in TX are on a tear with the new mods

Any future plans to experiment with adding 4matic to one of these 55's to put down all that extra power without having to DD with drag radials?... i would love to see a AWD w211 e55
What fun is that? The AT is not enough, now you want AWD too?
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Old 11-16-2011, 03:49 PM
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Originally Posted by chawkins2001 View Post
I believe a 6-8mm decrease. Brooke stated that running a 180mm lower and the smaller upper would be equivalent in running a 186-188mm lower but would rev up WAY faster. Adding this plus a stall and TCU upgrade, would make things even more violent.
That's how I read it too, but mathematically the upper pulley doesn't need to get much smaller to have a dramatic effect.

My assumptions:

90mm S/C "stock" pulley (need to confirm)
180mm Crank pulley


My calcs:

Pulley ratio = 2.00:1
Max S/C RPM @ 6500RPM engine speed = 13,000RPM


A 186mm lower pulley would have a ratio of 2.07:1 and a S/C max of 13,433RPM
A 188mm lower pulley would have a ratio of 2.09:1 and a S/C max of 13,578RPM

If the smaller S/C pulley has a similar effect as the 186-188mm lower pulley, then the overall pulley ratio should be in that 2.07-2:09 range even when using the 180mm crank pulley...... by my calculations, an 86.5mm S/C pulley & 180mm crank pulley nets out to 2.08:1 ratio. Right in the middle of those other pulley combinations.

It seems that a 3mm reduction in the upper pulley nets the same improvements as a 6mm increase in the crank pulley, which if you think about it makes sense. There's a 2:1 ratio difference in those pulley sizes, so changes in the smaller pulley should be more dramatic.

One of the experts can chime in here.... I may be completely off-base with my thinking and numbers.


-G
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Old 11-16-2011, 03:56 PM
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Originally Posted by Forrest Gump 9 View Post
What fun is that? The AT is not enough, now you want AWD too?
the fun is in actually being able to punch it and not spin all the time some traction ala gt-r/gallardo would be nice
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Old 11-16-2011, 04:06 PM
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Originally Posted by gaspam View Post
the fun is in actually being able to punch it and not spin all the time some traction ala gt-r/gallardo would be nice
You should have bought an RS6 then.
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Old 11-16-2011, 04:09 PM
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Originally Posted by GregMB View Post
That's how I read it too, but mathematically the upper pulley doesn't need to get much smaller to have a dramatic effect.

My assumptions:

90mm S/C "stock" pulley (need to confirm)
180mm Crank pulley


My calcs:

Pulley ratio = 2.00:1
Max S/C RPM @ 6500RPM engine speed = 13,000RPM


A 186mm lower pulley would have a ratio of 2.07:1 and a S/C max of 13,433RPM
A 188mm lower pulley would have a ratio of 2.09:1 and a S/C max of 13,578RPM

If the smaller S/C pulley has a similar effect as the 186-188mm lower pulley, then the overall pulley ratio should be in that 2.07-2:09 range even when using the 180mm crank pulley...... by my calculations, an 86.5mm S/C pulley & 180mm crank pulley nets out to 2.08:1 ratio. Right in the middle of those other pulley combinations.

It seems that a 3mm reduction in the upper pulley nets the same improvements as a 6mm increase in the crank pulley, which if you think about it makes sense. There's a 2:1 ratio difference in those pulley sizes, so changes in the smaller pulley should be more dramatic.

One of the experts can chime in here.... I may be completely off-base with my thinking and numbers.


-G
you are spot on!
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Old 11-16-2011, 04:26 PM
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Nice mod

Subscribing for more info.
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Old 11-16-2011, 04:38 PM
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Originally Posted by Forrest Gump 9 View Post
You should have bought an RS6 then.
The RS6 is sick. Sexy, fast and has TRACTION all the time.

click

click

click

Last edited by urbamworm; 11-16-2011 at 04:45 PM.
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Old 11-16-2011, 04:41 PM
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Originally Posted by Forrest Gump 9 View Post
You should have bought an RS6 then.
already have an S4 thats faster than 2003 RS6s plus the older c5 rs6 had very expensive DRC issues that made airmatic failure look cheap

if the newer 2008-2010 RS6 v10 TT came to north america i would have been looking at it since they are running around 6sec 60-130mph on moderately tuned versions pushing 800+ awhp... but as usual europe gets the cooler cars and it didnt make it here

AWD has its advantages when HP gets high... drifting is fun for a parking lot but not when trying to out accelerate another car
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Old 11-16-2011, 07:05 PM
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Originally Posted by shardul View Post
you are spot on!
Are you hinting that the sc pulley will be ~86mm?
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Old 11-16-2011, 08:48 PM
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When will this be released?
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Old 11-17-2011, 01:07 AM
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My SC clutch is toast and I've been planning on paying for the overpriced $1K MB assembly so count me in for one of these. This pulley and the TCU flash will be the next mods for my 55. Any idea on price yet?
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