Theory behind crank pulley design
Thread Starter
Out Of Control!!
Joined: Sep 2004
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From: San Diego
2015 S212
Theory behind crank pulley design
With all the variables out for these pulleys, I wanted to get some feedback on preferences.
1 - Style: Do you like the OEm-like pressed on style? Do you like the fluid dampening? Why?
2 - Weight. Does it matter?
3 - Ideal diameter? Why?
1 - Style: Do you like the OEm-like pressed on style? Do you like the fluid dampening? Why?
2 - Weight. Does it matter?
3 - Ideal diameter? Why?
Member
Joined: May 2005
Posts: 145
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From: Scarborough, Canada
2004 E55
With all the variables out for these pulleys, I wanted to get some feedback on preferences.
1 - Style: Do you like the OEm-like pressed on style? Do you like the fluid dampening? Why?
2 - Weight. Does it matter?
3 - Ideal diameter? Why?
1 - Style: Do you like the OEm-like pressed on style? Do you like the fluid dampening? Why?
2 - Weight. Does it matter?
3 - Ideal diameter? Why?
1. Fliud style, the dampening qualities are in a class of there own, results speak for themselves, just check out what real racers use in there $100k motors. If Fluid is not available stick with oem style as the elastometers are tuned to our engine specs, aftermarket companies that make dampeners don't have the multi-million dollar equipment to dial in there shiny billet pieces, looks nice but does nothing.
2. Could care less about weight our motors don't see enough rpm to see any difference, also as a rule the heavier dampeners can dampen a bit more.
3. My thoughts on size are 160-170mm(max) Through my own trial and error(yes i actually test my parts!) Going big does nothing good! Renntech Kleemann, MKB did there homework! They went with 160-170mm for a reason.
A) Our cooling systems can't handle the extra boost and heat created.
B) even with upgraded cooling the motor is using way too much power to turn the blower then the power gained from extra boost.
C) The extra load on the blower itself and the clutch assembly is not worth it.
But hey WTF do i know!
Thread Starter
Out Of Control!!
Joined: Sep 2004
Posts: 13,394
Likes: 6
From: San Diego
2015 S212
I'm thinking diminishing returns on the size as well. Hmmm, I would have thought that weight would be a good thing to drop. I also agree on the fluid dampening being the best.
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Joined: Jun 2004
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From: Moscow, Russia
E55K
Well..with IC mods ASP pully size works quite good....Rflow make the most power on his car...
Mkb does run crank pullies at all they use small SC pully...
Rennetch ordered a bigger pulies for Fluiddamper or whatever its name...
Very reputable tuner like Evotech run 178mm pully on inside edge with make them the same size as ASP...
So there is not definete answers to this...I am getting 183, 186 and 190 pullies and IC mod...when everything installed I am going to test and test and see which one will work better..
Mkb does run crank pullies at all they use small SC pully...
Rennetch ordered a bigger pulies for Fluiddamper or whatever its name...
Very reputable tuner like Evotech run 178mm pully on inside edge with make them the same size as ASP...
So there is not definete answers to this...I am getting 183, 186 and 190 pullies and IC mod...when everything installed I am going to test and test and see which one will work better..
Last edited by E55 RUSS; Aug 31, 2007 at 11:45 AM.
Thread Starter
Out Of Control!!
Joined: Sep 2004
Posts: 13,394
Likes: 6
From: San Diego
2015 S212
So, there is no clear choice, then since i won't buy RennTech. Their unit (new generation) is the design I like the best. The size isn't ideal (I prefer larger), but the design is nice.
If fluid dampening is so much better, then why are there not more available? I know there are a few about to release and I was trying to decide which to test out.
Does anyone know of another company that offers fluid dampened pulleys for us?
If fluid dampening is so much better, then why are there not more available? I know there are a few about to release and I was trying to decide which to test out.
Does anyone know of another company that offers fluid dampened pulleys for us?
Member
Joined: May 2005
Posts: 145
Likes: 0
From: Scarborough, Canada
2004 E55
Well..with IC mods ASP pully size works quite good....Rflow make the modst on his car...
Mkb does run crank pullies at all they use small SC pully...
Rennetch ordered a bigger pulies for Fluiddamper or whatever its name...
Very reputable tuner like Evotech run 178mm pully on inside edge with make them the same size as ASP...
So there is not definete answers to this...I am getting 183, 186 and 190 pullies and IC mod...when everything installed I am going to test and test and see which one will work better..
Mkb does run crank pullies at all they use small SC pully...
Rennetch ordered a bigger pulies for Fluiddamper or whatever its name...
Very reputable tuner like Evotech run 178mm pully on inside edge with make them the same size as ASP...
So there is not definete answers to this...I am getting 183, 186 and 190 pullies and IC mod...when everything installed I am going to test and test and see which one will work better..
Renntech's new pulley is still a 165 and is a killer setup.
Does anyone know of another company that offers fluid dampened pulleys for us?
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MBWorld Fanatic!
Joined: Jun 2004
Posts: 2,596
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From: Moscow, Russia
E55K
Renntech old pully was 168mm...and туц щту is suupposed to be biпger not smaller...Also as far as I know E55 stock pully is 165mm, so why would Rennetch make same pully as a stock one
Is very difficult to change the IC core on e55 ???
Is very difficult to change the IC core on e55 ???
Last edited by E55 RUSS; Aug 31, 2007 at 02:11 PM.
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MBWorld Fanatic!
Joined: Jun 2005
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From: Mia
2005 E 55
Mike, the stock pulley measures about 157mm from the front outside lip(belt guide) to outside lip and about 151 mm from the actual belt grove to belt grove.
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From: DC
junk
[QUOTE=aftermarket companies that make dampeners don't have the multi-million dollar equipment to dial in there shiny billet pieces, looks nice but does nothing.[/QUOTE]
ha ha ha ha ha, you are absolutely correct to the thousandth degree.
ha ha ha ha ha, you are absolutely correct to the thousandth degree.
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Joined: Jan 2007
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From: Kuwait
CLS55 2006, CLS 63S 2015
Do as you wish but there is what they call a sweet spot going big and running a stock intercooler core is the biggest problem, you can have as many heat exchangers added to the car but the stock core is what is bad. What you gain from extra boost you lose big time from extra heat and amount of power to turn the blower! Car will feel great down low but will kill top end HP! Believe what you wish i have SLR coolers on my car and i still won't run a huge pulley because i've tried both!
Renntech's new pulley is still a 165 and is a killer setup.
No, and not of the same quality of a real fluidampr! It's all about cost you can't get real cuban's for marlboro price, no such thing as cheap when it comes to quality you get what you pay for! I custom Fluidampr set-up cost me $5000, set-up costs and so on add up, but it's worth it to me because i want my engine and blower to last!
Renntech's new pulley is still a 165 and is a killer setup.
No, and not of the same quality of a real fluidampr! It's all about cost you can't get real cuban's for marlboro price, no such thing as cheap when it comes to quality you get what you pay for! I custom Fluidampr set-up cost me $5000, set-up costs and so on add up, but it's worth it to me because i want my engine and blower to last!
thanks
Thread Starter
Out Of Control!!
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From: San Diego
2015 S212
Personally, I am waiting for a new one to come out. I can't support RennTech, so I may try to pick up a used EVO or K one and wait it out until I find the real deal.
Thread Starter
Out Of Control!!
Joined: Sep 2004
Posts: 13,394
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From: San Diego
2015 S212
MBWorld Fanatic!
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From: orange county, ca
2006 E55
I replaced my older style renntech pulley another old style pulley; and then again with the new fluid one, and noticed no difference.
but I must reiterate....it sure is sexy!!!
Thread Starter
Out Of Control!!
Joined: Sep 2004
Posts: 13,394
Likes: 6
From: San Diego
2015 S212
MBWorld Fanatic!
Joined: Jan 2007
Posts: 2,597
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From: Kuwait
CLS55 2006, CLS 63S 2015
