Debating on getting crank pulley
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Newbie
Joined: Dec 2017
Posts: 10
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From: Chicago
2005 E55
Debating on getting crank pulley
Hey guys,
I am debating on doing a crank pulley, after searching the forums its seems people say stay away while others have said make sure it is pinned and reputable install. Planning on grabbing a belt wrap kit along with new S/C pulley (debating on 84/77). Currently have headers no cats, S/C pulley (haven't measured guessing 84 based on eyeball view), 1 stage colder plugs, upper HE.
Anyone on here that has been running a crank pulley for awhile? And what is the best recommended size for my current set up. Any feedback appreciated. Planning on going through Raceiq.
I am debating on doing a crank pulley, after searching the forums its seems people say stay away while others have said make sure it is pinned and reputable install. Planning on grabbing a belt wrap kit along with new S/C pulley (debating on 84/77). Currently have headers no cats, S/C pulley (haven't measured guessing 84 based on eyeball view), 1 stage colder plugs, upper HE.
Anyone on here that has been running a crank pulley for awhile? And what is the best recommended size for my current set up. Any feedback appreciated. Planning on going through Raceiq.
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Joined: Jul 2016
Posts: 3,024
Likes: 395
From: Colorado, USA
E55 C63
Skip the crank, you can run a 76 clutched with your mods with no issue. Crank is much more risky than the SC pulley. infact we have had 0 SC pulley failures since we started manufacturing them with heavy duty springs, while with the crank pulleys you can read a number of posts with them having issues even when installed correctly. (dont forget to replace the crank bolt if you decide to go with one)
You could also go to the 74mm fixed if you wanted to dump the clutch, but anything beyond that (72 or 70) youd want an ice tank and meth. Shoot us a PM and we will send you a coupon code for a pulley/tune combo of your choice.
You could also go to the 74mm fixed if you wanted to dump the clutch, but anything beyond that (72 or 70) youd want an ice tank and meth. Shoot us a PM and we will send you a coupon code for a pulley/tune combo of your choice.
Former Vendor of MBWorld
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Joined: May 2008
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From: Houston
2003 W211 E55, 2003 W220 S600
Hey guys,
I am debating on doing a crank pulley, after searching the forums its seems people say stay away while others have said make sure it is pinned and reputable install. Planning on grabbing a belt wrap kit along with new S/C pulley (debating on 84/77). Currently have headers no cats, S/C pulley (haven't measured guessing 84 based on eyeball view), 1 stage colder plugs, upper HE.
Anyone on here that has been running a crank pulley for awhile? And what is the best recommended size for my current set up. Any feedback appreciated. Planning on going through Raceiq.
I am debating on doing a crank pulley, after searching the forums its seems people say stay away while others have said make sure it is pinned and reputable install. Planning on grabbing a belt wrap kit along with new S/C pulley (debating on 84/77). Currently have headers no cats, S/C pulley (haven't measured guessing 84 based on eyeball view), 1 stage colder plugs, upper HE.
Anyone on here that has been running a crank pulley for awhile? And what is the best recommended size for my current set up. Any feedback appreciated. Planning on going through Raceiq.
83mm and 168mm lower
Crank pulleys will generate more torque
MBWorld Fanatic!
Joined: Apr 2017
Posts: 1,120
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From: Tampa Bay, FL
05 E55, 98 CLK320
Crank pulleys are typically lighter than the stock (ASP ones anyway)
You would get more grip out of it on the belt, the rest I'm not so sure how it would generate more torque
You would get more grip out of it on the belt, the rest I'm not so sure how it would generate more torque
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Joined: Dec 2011
Posts: 4,599
Likes: 102
From: Florida
A Merc
I like that crank better
the only reason why some vendors push a sc pulley is because they are afraid the buyer will not install it properly and will destroy the crank on these cars. If you have a qualified person that has done many crank pulley installs in these cars go with the crank pulley
the only reason why some vendors push a sc pulley is because they are afraid the buyer will not install it properly and will destroy the crank on these cars. If you have a qualified person that has done many crank pulley installs in these cars go with the crank pulley
Junior Member
Joined: Jun 2017
Posts: 24
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2004 e55
I can defiantly see the angle with more grip on the belt. Lighter weight vs the stock crank pulley would be a plus for sure.
Personally I am no stranger to the product, I may have only just purchased a E55 a couple months ago but I remember doing PDI's on them when they were new. (A lifetime ago by the way)
My only question would be, 180/90 vs 154/77. Both show 14.0 psi on the random chart I just looked at. All other things equal, will they dyno the same?
Personally I am no stranger to the product, I may have only just purchased a E55 a couple months ago but I remember doing PDI's on them when they were new. (A lifetime ago by the way)
My only question would be, 180/90 vs 154/77. Both show 14.0 psi on the random chart I just looked at. All other things equal, will they dyno the same?
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MBWorld Fanatic!
Joined: Aug 2012
Posts: 1,790
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From: DownEast Maine
CLS 55 AMG E500 ML320
The rubber in your stock crank pulley has got to be getting near the end of it's life. Anybody know more about that? How long can the stock harmonic balancer run under this load?
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Former Vendor of MBWorld
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From: Houston
2003 W211 E55, 2003 W220 S600
This is what happens when someone takes a used stock crank pulley to turn it into a bigger one. Off lately I don't accept any used unit to turn into a bigger crank pulley
SPONSOR
Joined: Jul 2016
Posts: 3,024
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From: Colorado, USA
E55 C63
You'e not gaining anything with a crank pulley. And I would Definitely not reccomend the adjustable ones. (Very high failure rate even with a pin kit, when they do fail the installation will be blamed, seen it before)
We also sell the remanufactured New OEM core crank pulleys. But I would still reccomend a SC pulley over crank all day long.
install is 30 minutes
same power
lower price
less risk
hell, you could do a brand new OEM crank pulley with an upgraded SC for the same price.
We also sell the remanufactured New OEM core crank pulleys. But I would still reccomend a SC pulley over crank all day long.
install is 30 minutes
same power
lower price
less risk
hell, you could do a brand new OEM crank pulley with an upgraded SC for the same price.
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Joined: Jul 2016
Posts: 3,024
Likes: 395
From: Colorado, USA
E55 C63
I can defiantly see the angle with more grip on the belt. Lighter weight vs the stock crank pulley would be a plus for sure.
Personally I am no stranger to the product, I may have only just purchased a E55 a couple months ago but I remember doing PDI's on them when they were new. (A lifetime ago by the way)
My only question would be, 180/90 vs 154/77. Both show 14.0 psi on the random chart I just looked at. All other things equal, will they dyno the same?
Personally I am no stranger to the product, I may have only just purchased a E55 a couple months ago but I remember doing PDI's on them when they were new. (A lifetime ago by the way)
My only question would be, 180/90 vs 154/77. Both show 14.0 psi on the random chart I just looked at. All other things equal, will they dyno the same?
There is a large weight savings with the 76mm over the factory 90mm supercharger pulley. (76 also makes more power than the 77)
the 2 sizes you mentioned are identical. Crank pulley will have less belt slip. But you could buy a belt wrap kit for the difference and still have $100 left over.
Last edited by VictoryRoadPerformance; Dec 16, 2017 at 09:08 AM.
Former Vendor of MBWorld
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From: Houston
2003 W211 E55, 2003 W220 S600
If you choose to go the SC route
77mm SCP is the smallest you show go without over spinning the blower past its efficiency point and generating heat.
Lot of cars are running the 77mm with out any issues and running good times.
Too bad I don't tell my customers to make pointless you tubes video showing a single pull.
77mm SCP is the smallest you show go without over spinning the blower past its efficiency point and generating heat.
Lot of cars are running the 77mm with out any issues and running good times.
Too bad I don't tell my customers to make pointless you tubes video showing a single pull.
SPONSOR
Joined: Jul 2016
Posts: 3,024
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From: Colorado, USA
E55 C63
you say 72 is a heat pump. Yet you encourage stacked pulley setups.
on your own car you ran a 195CP.
--------------
76 Will not overspin the blower or create any measurable amount of heat over the 77. It' a better pulley with a slightly smaller dimension.
Its Annodized with zinc coated heavy duty springs. And we maintain a 0 failure rate. Also made right here in the USA.
wether you decide on a crank or supercharger pulley we are here to help. Feel free to give us a call if you' like to talk about them in depth.
There' nothing wrong with a crank pulley if it's in your budget, but we feel there are more efficient ways to spend your money given the advantages of the SC pulleys.
Former Vendor of MBWorld
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Joined: May 2008
Posts: 12,139
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From: Houston
2003 W211 E55, 2003 W220 S600
If they have adequate cooling, ported heads, etc etc why not.
A majority of customers don't have the above mentioned mod so we recommend sticking with a 77mm as the smallest size.
Besides youtube videos do you have any good 1/4 miles times to support you claims?
A majority of customers don't have the above mentioned mod so we recommend sticking with a 77mm as the smallest size.
Besides youtube videos do you have any good 1/4 miles times to support you claims?
