Mines bigger than yours
Out Of Control!!
Joined: Feb 2003
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haters crazy
Super Member
Joined: Apr 2003
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w212 E63 / 996tt
Belt Size
Sneaky,,,
What size belt are you using and how tight of a fit is it?
I too am curious as to how the bored TB affects your idle. Every blue moon my 80mm tends to force my car into a seizure.
Also, I'd be curious to see how much boost you consistently get. My datalogger is showing 14.1 lbs of boost w/ my 180mm.
best of luck and hook that baby to a Datalogger to see where AIT go.
What size belt are you using and how tight of a fit is it?
I too am curious as to how the bored TB affects your idle. Every blue moon my 80mm tends to force my car into a seizure.
Also, I'd be curious to see how much boost you consistently get. My datalogger is showing 14.1 lbs of boost w/ my 180mm.
best of luck and hook that baby to a Datalogger to see where AIT go.
Super Member
Joined: Aug 2006
Posts: 856
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From: palm beach
CLS55 & CL CK60
Sneaky,,,
What size belt are you using and how tight of a fit is it?
I too am curious as to how the bored TB affects your idle. Every blue moon my 80mm tends to force my car into a seizure.
Also, I'd be curious to see how much boost you consistently get. My datalogger is showing 14.1 lbs of boost w/ my 180mm.
best of luck and hook that baby to a Datalogger to see where AIT go.
What size belt are you using and how tight of a fit is it?
I too am curious as to how the bored TB affects your idle. Every blue moon my 80mm tends to force my car into a seizure.
Also, I'd be curious to see how much boost you consistently get. My datalogger is showing 14.1 lbs of boost w/ my 180mm.
best of luck and hook that baby to a Datalogger to see where AIT go.
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From: Toronto
CLS63 PP
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E55
I'm pretty sure when a manufacturer list a pulley size, it is taken from the ribbed area, not the lip.
Here is a pic of a 178mm ASP. Taking the circumference measurement of the ribbed area I get 561mm. Divide that by 3.14 = 178.66
For a comparison, I also measured the accessory pulley and came up with 477mm, which = a diameter of 151.9mm
Last, I measured across the face from lip to lip like you did and came up with 183mm. If I had to guess, the true measurement of your pulley is around 185mm.
Here is a pic of a 178mm ASP. Taking the circumference measurement of the ribbed area I get 561mm. Divide that by 3.14 = 178.66
For a comparison, I also measured the accessory pulley and came up with 477mm, which = a diameter of 151.9mm
Last, I measured across the face from lip to lip like you did and came up with 183mm. If I had to guess, the true measurement of your pulley is around 185mm.
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w212 E63 / 996tt
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how big is the pulley?
Thread Starter
Super Member
Joined: Apr 2009
Posts: 837
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From: Tacoma WA
Bicycle
It is a max bore job, it works fine, As soon as I put it on it acted like poo, but with the key on I cycle the gas wot and close a few time and it cleared up. The work he does could be better, it gets the job done but fit and finnish is lacking.
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Joined: Apr 2009
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From: Tacoma WA
Bicycle
So the car drives smooth, no hiccups under normal driving. First hard pulls resulted in a whole lot of belt slip, Came home an rub down the 180 belt with vht track bite and squezed it on. That seemed to fix the belt slip, but now the car is scary lean(14.5), I'm on a stock tune still so not sure how much fuel is be had with tuning but I hope its a bunch!
Last edited by sneakyneon; May 7, 2010 at 10:32 AM.
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Joined: May 2009
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From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
I'm pretty sure when a manufacturer list a pulley size, it is taken from the ribbed area, not the lip.
Here is a pic of a 178mm ASP. Taking the circumference measurement of the ribbed area I get 561mm. Divide that by 3.14 = 178.66
For a comparison, I also measured the accessory pulley and came up with 477mm, which = a diameter of 151.9mm
Last, I measured across the face from lip to lip like you did and came up with 183mm. If I had to guess, the true measurement of your pulley is around 185mm.
Here is a pic of a 178mm ASP. Taking the circumference measurement of the ribbed area I get 561mm. Divide that by 3.14 = 178.66
For a comparison, I also measured the accessory pulley and came up with 477mm, which = a diameter of 151.9mm
Last, I measured across the face from lip to lip like you did and came up with 183mm. If I had to guess, the true measurement of your pulley is around 185mm.
well, stock pulley measures from lip to tip, about 155mm, thats how i calculated it. and tgats hoe i calculated the big pulley.
and we have EC 172mm. calculated from side to side is also the same. like how i measured the big pulley.
>< now, what are u doing is calculating it the long way, in 2 steps rather than 1.
calculating its circut and dividing by PI gives u the measure from side to side.
so to do it invertly, 190 * PI (3.14195) = 596.9.
and for calculating the ribbed area we just drop 2mm = my pulley is 188mm on the ribbed area.
PS: i'am an engineer and doing my Master now ^_^. so i know how to calculate. lo0ol
we didn't see any boost leak with these big pulleys, but we saw an extra power. alot of torque actually.
gotta love them guys.
if i was in US with your weather i will go above 200mm and will upgrade S/C bearings with heavy duty ones that can handle fast rotation and heat.
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From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
So the car drives smooth, no hiccups under normal driving. First hard pulls resulted in a whole lot of belt slip, Came home an rub down the 180 belt with vht track bite and squezed it on. That seemed to fix the belt slip, but now the car is scary lean(14.5), I'm on a stock tune still so not sure how much fuel and be had with tuning but I hope its a bunch!
mine to is very smooth on idle and normal driving, also no hiccups,
but it is lean man, for a fast solution untill u tune it, u can use the STAR to increase the fuel from the Fuel pumps by making it slightly rich. and return it back to normal before u tune it.
i know u r liking the power, but a tune will make u feel it is another car, believe me, i've been in this.
thanks Jeremy for the great tune.
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From: Houston
2003 W211 E55, 2003 W220 S600
well, stock pulley measures from lip to tip, about 155mm, thats how i calculated it. and tgats hoe i calculated the big pulley.
and we have EC 172mm. calculated from side to side is also the same. like how i measured the big pulley.
>< now, what are u doing is calculating it the long way, in 2 steps rather than 1.
calculating its circut and dividing by PI gives u the measure from side to side.
so to do it invertly, 190 * PI (3.14195) = 596.9.
and for calculating the ribbed area we just drop 2mm = my pulley is 188mm on the ribbed area.
PS: i'am an engineer and doing my Master now ^_^. so i know how to calculate. lo0ol
we didn't see any boost leak with these big pulleys, but we saw an extra power. alot of torque actually.
gotta love them guys.
if i was in US with your weather i will go above 200mm and will upgrade S/C bearings with heavy duty ones that can handle fast rotation and heat.
and we have EC 172mm. calculated from side to side is also the same. like how i measured the big pulley.
>< now, what are u doing is calculating it the long way, in 2 steps rather than 1.
calculating its circut and dividing by PI gives u the measure from side to side.
so to do it invertly, 190 * PI (3.14195) = 596.9.
and for calculating the ribbed area we just drop 2mm = my pulley is 188mm on the ribbed area.
PS: i'am an engineer and doing my Master now ^_^. so i know how to calculate. lo0ol
we didn't see any boost leak with these big pulleys, but we saw an extra power. alot of torque actually.
gotta love them guys.
if i was in US with your weather i will go above 200mm and will upgrade S/C bearings with heavy duty ones that can handle fast rotation and heat.
MBWorld Fanatic!
Joined: May 2009
Posts: 1,484
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From: Abu Dhabi
C218 CLS63TT PP Edition1, W213 E63S
i know
i really wanted 190mm but what to do, i installed it, better then the 178 lol
Thread Starter
Super Member
Joined: Apr 2009
Posts: 837
Likes: 1
From: Tacoma WA
Bicycle
So for my fuel, Not sure I'm willing to drive 1500 miles for a tune just have to turn around because there not 2 point of fuel in the tune, Today podject is going to be check the volatage at the pump, anything less than 11 is going to get a rewire job. this should put me at the output of the alternator, so let's say 13-14v Plus I'll pull the pump and make sure the filer/sock or what ever they have in there looks clean. The last straw would be to replace the pump but at 340.00 bucks I'm a bit hessitant just to throw that away plus for that kinda of money I'm betting I could put a real pump and raising rate reg in the car. Its not like I'm done modding yet!
Last edited by sneakyneon; May 7, 2010 at 11:17 AM.
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From: Sin City
2005 E55 AMG - - 2005 SL55 AMG - - - - - - 2006 SLK55 AMG - - - - - - 2013 Ducati Diavel AMG -
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From: Toronto
CLS63 PP
So Would you recommend it? I have been on the fence, but as long as it doesn't throw a code and Idles correctly I'll give it a shot.
Thread Starter
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Joined: Apr 2009
Posts: 837
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From: Tacoma WA
Bicycle
Also keep in mind that my intention is a fast drag/1/4 mile set up. this pulley is going to make alot of heat fast! I'm running a Water/meth injection set up to help with this but still would exspect it to heat soak quickly on the street.
