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      08-25-2013, 10:28 PM   #991
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Quote:
Originally Posted by Rated M Roadster View Post
Just ordered a second one from here; this time coated:

http://www.928motorsports.com/parts/6ribpulley.php
well I'll be a S.O.B, I was only looking at the Vortech site. Ess pulleys are milled down 2.7mm or 1/8" , I'm guessing yours aren't.
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      08-25-2013, 10:34 PM   #992
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Quote:
Originally Posted by ZStig View Post
Ess pulleys are milled down 2.7mm or 1/8" , I'm guessing yours aren't.
Milled down? In what way?
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      08-25-2013, 10:43 PM   #993
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the snout end of it, so that it sits closer to the supercharger

this is my bible: http://www.m3forum.net/m3forum/showthread.php?t=419360
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      08-25-2013, 10:47 PM   #994
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Quote:
Originally Posted by ZStig View Post
the snout end of it, so that it sits closer to the supercharger
Oh; I bought this spacer: http://www.928motorsports.com/parts/...spacer_kit.php

Then had it cut down to the same spacing of the original pulley.
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      08-25-2013, 10:53 PM   #995
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cool. I'm gonna take off my pulley, measure the spacing, and then request the coating company to machine it to match. I assume the stock pulley is just cut down 1/8", but it would suck to be wrong and have wasted all that money

did you have to take the supercharger off to the the pulley off? How are you going to calculate the belt size for your new pulley?
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      08-25-2013, 11:39 PM   #996
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Quote:
Originally Posted by ZStig View Post
cool. I'm gonna take off my pulley, measure the spacing, and then request the coating company to machine it to match. I assume the stock pulley is just cut down 1/8", but it would suck to be wrong and have wasted all that money

did you have to take the supercharger off to the the pulley off? How are you going to calculate the belt size for your new pulley?
I would wait to get the pulley before cutting the spacer; then you can measure it on the car and get the spacer cut locally. Needs to be fairly precise.

You just have to hold the pulley in place while you loosen the bolt; then it just slides off (if not, heat it up with a torch). The stock pulley on my kit was a 2.7", so I'll just use the same belt.
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      08-25-2013, 11:42 PM   #997
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Quote:
Originally Posted by Rated M Roadster View Post
I would wait to get the pulley before cutting the spacer; then you can measure it on the car and get the spacer cut locally. Needs to be fairly precise.

You just have to hold the pulley in place while you loosen the bolt; then it just slides off (if not, heat it up with a torch). The stock pulley on my kit was a 2.7", so I'll just use the same belt.
Thanks for the tips, I'm just waiting on feedback from one more source about what PSI to expect with the 5.11/2.87 combo

are you planning hitting 11psi on a stock fuel pump, or does your kit already come with fuel upgrades beyond bigger injectors?
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      08-26-2013, 12:21 AM   #998
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I don't know why I'm over thinking this. 2.87" is a 3 step smaller pulley than 3.33" and should therefore be 3psi higher than 7. 1psi per each size decrease
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      08-26-2013, 07:08 AM   #999
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Quote:
Originally Posted by ZStig
I don't know why I'm over thinking this. 2.87" is a 3 step smaller pulley than 3.33" and should therefore be 3psi higher than 7. 1psi per each size decrease
Not necessarily. For my non-M it worked out closer to 0.5 psi.
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      08-26-2013, 11:40 AM   #1000
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I have measured my VT2-500 kit with 8 psi pulley like beedub and i have 135 mm crank and 79 mm supercharger pulleys.

My car is putting down 457 wheel hp and 390 crank tq
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      08-26-2013, 11:47 AM   #1001
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Quote:
Originally Posted by tikamak View Post
I have measured my VT2-500 kit with 8 psi pulley like beedub and i have 135 mm crank and 79 mm supercharger pulleys.

My car is putting down 457 wheel hp and 390 crank tq
beedub is running a less aggressive 130mm crank and 82.55mm supercharger from what I've gathered.
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      08-26-2013, 11:47 AM   #1002
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Quote:
Originally Posted by pokeybritches View Post
Not necessarily. For my non-M it worked out closer to 0.5 psi.
probably because of the lower engine compression
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      08-26-2013, 11:59 AM   #1003
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Quote:
Originally Posted by tikamak View Post
I have measured my VT2-500 kit with 8 psi pulley like beedub and i have 135 mm crank and 79 mm supercharger pulleys.

My car is putting down 457 wheel hp and 390 crank tq
And how is that a 500 kit with those numbers?
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      08-26-2013, 12:16 PM   #1004
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Quote:
Originally Posted by seank View Post
And how is that a 500 kit with those numbers?
Beats me, all i asked was for the 8psi pulley upgrade to be included.
I have a boost leak as well, my car is only seeing 0.45 bar which is 6.5 psi.
I need to get to 0.55 bar 8 psi.

My car has EURO headers + decatted S pipe + stock xpipe and el diablo muffler (open flow)
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      08-26-2013, 12:24 PM   #1005
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      08-26-2013, 04:25 PM   #1006
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Did you do a baseline dyno, kr have one from a stock S54 car on that dyno? What was the correction factor?
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      08-26-2013, 06:39 PM   #1007
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Quote:
Originally Posted by pokeybritches View Post
Did you do a baseline dyno, kr have one from a stock S54 car on that dyno? What was the correction factor?
Also curious...
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      08-26-2013, 07:13 PM   #1008
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Quote:
Originally Posted by tikamak View Post
Impressive.
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      08-26-2013, 07:26 PM   #1009
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Quote:
Originally Posted by nekky
Quote:
Originally Posted by pokeybritches View Post
Did you do a baseline dyno, kr have one from a stock S54 car on that dyno? What was the correction factor?
Also curious...
Me too...
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      08-26-2013, 11:10 PM   #1010
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alright. enough research! I ordered a 2.87" pulley, shipping straight to the pulley coating company. I hope it won't slip once its done. I'll probably replace my hydraulic belt tensioner just to be sure its not my belt size which is slacking right now.

I'll dyno before, and after. If the fuel isn't keeping up, I'm going to order an Aeromotive 340 stealth fuel pump. Maybe I should just do it now anyway, thats the next decision point... http://www.radiumauto.com/Fuel-Pump-...-E46-P314.aspx
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      08-27-2013, 01:26 AM   #1011
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I didn't do a baseline dyno. also no idea on the correction factor.
But a stock US e46 M3 is 279 whp on this dyno.
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      08-28-2013, 10:54 PM   #1012
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Quote:
Originally Posted by Rated M Roadster View Post
Just ordered a second one from here; this time coated:

http://www.928motorsports.com/parts/6ribpulley.php
let me know how you like the coating. After I ordered my pulley and coating, I found out that there is a considerable number of people who experience dusting from the belt, indicating that the coating is really hurting the belt. Ideally I'd run a bigger crank pulley, but that is 2x the cost of a coated small pulley

Its too late for me now, everything is ordered.
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