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W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Weistic kit with OEM CP or Can It Be with Higher CP?

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Old Sep 6, 2014 | 12:55 PM
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2005 E55 Wagon
Weistic kit with OEM CP or Can It Be with Higher CP?
I am seriously considering the Weistic Kit. But, I currently have an 178 ASP CP. I gave away my OEM CP, never thought I would ever need it again. Does anyone know (before I call Weistic on Monday):

1. of anyone w this kit on their E55, where their CP was not oem?

2. if you can have an higher CP, like a 178 ASP CP, with this kit?

Thanks ahead with any response.
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Old Sep 6, 2014 | 02:57 PM
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You can keep your lower pulley. Get a bigger upper. It's all about ratios. If you want you can sell your lower and recoup some money
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Old Sep 6, 2014 | 03:34 PM
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I'd also take the opportunity to pin the next crank pulley you put on while you have it off.
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Old Sep 6, 2014 | 04:22 PM
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Wonder what size upper I would need with my current pinned 195.
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Old Sep 6, 2014 | 04:27 PM
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Originally Posted by black06c230
Wonder what size upper I would need with my current pinned 195.
It's a calculation and depends on how hard you want to spin the sc. But it would have to be massive with a 195 lower.
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Old Sep 7, 2014 | 08:44 AM
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Originally Posted by blackbenzz
You can keep your lower pulley. Get a bigger upper. It's all about ratios. If you want you can sell your lower and recoup some money
I did not know that Weistecs kit had or allowed different pulleys for their sc. Good to know.
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Old Sep 7, 2014 | 10:29 AM
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I'm running a 170mm/62.5mm combo with my Weistec set up. With my mods, that'll translate to about 20 psi at sea level
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Old Sep 8, 2014 | 11:30 AM
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Originally Posted by blackbenzz
It's a calculation and depends on how hard you want to spin the sc. But it would have to be massive with a 195 lower.
A larger supercharger pulley is a good thing, more surface area and wrap circumference for the belt so you're less likely to slip. IMO, you're better off starting with a large CP
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Old Sep 8, 2014 | 11:46 AM
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Originally Posted by black06c230
Wonder what size upper I would need with my current pinned 195.
320mm....lol.

OP I believe I have a stock CP laying around if you end up needing one.
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Old Sep 8, 2014 | 12:00 PM
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Originally Posted by jcjmw
I did not know that Weistecs kit had or allowed different pulleys for their sc. Good to know.
Sure does. Keep your 178 and run a 65mm sc pulley if you want to spin it at max efficiency. But dunno if your motor will like it. This is assuming a 6500rpm rev limit
Originally Posted by ajm55
I'm running a 170mm/62.5mm combo with my Weistec set up. With my mods, that'll translate to about 20 psi at sea level
170mm? Are you running Weistec CP? That's a very good ratio. You are right around the sc max efficiency
Originally Posted by rockthemullet
A larger supercharger pulley is a good thing, more surface area and wrap circumference for the belt so you're less likely to slip. IMO, you're better off starting with a large CP
Yes that is true but there's a limit. You don't want to be running a 100mm sc pulley lol. I think the biggest they offer is 65mm. If you are revving to 6500 rpm and you run a 195 CP and 65 SCP you are over the max efficiency of a Whipple 2.9
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Old Sep 8, 2014 | 12:19 PM
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Originally Posted by blackbenzz
170mm? Are you running Weistec CP? That's a very good ratio. You are right around the sc max efficiency
Am indeed
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Old Sep 8, 2014 | 01:25 PM
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Originally Posted by blackbenzz
Yes that is true but there's a limit. You don't want to be running a 100mm sc pulley lol. I think the biggest they offer is 65mm. If you are revving to 6500 rpm and you run a 195 CP and 65 SCP you are over the max efficiency of a Whipple 2.9
Time for a bigger Whipple
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Old Sep 10, 2014 | 12:10 AM
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Well, it looks like I have to use the OEM CP with this kit.
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