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Old Tue, Oct-09-2018, 10:06:26 PM   #1
Dirtsquirt
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Default AA Stage 2 pulley requirements

Bought a AA HKS kit for my S54 but it is missing the pulleys. Goal is 500whp.

Are the 8-rib pullies an absolute necessity or would I be OK with running a 5.25 s50b32 crank pulley and sizing the SC pulley to match? It is a street car and does not see track time
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Old Wed, Oct-10-2018, 04:59:13 AM   #2
jony787
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Default AA Stage 2 pulley requirements

What pulley do you have in the s/c. Btw what s/c? Im guessing a gt8550?


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Old Wed, Oct-10-2018, 08:05:04 AM   #3
Dirtsquirt
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Default Re: AA Stage 2 pulley requirements

Either a 80mm or 90mm on the HKS supercharger. It isn’t very big
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Old Wed, Oct-10-2018, 01:47:04 PM   #4
rjskalet
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Default Re: AA Stage 2 pulley requirements

Is the pulley on your supercharger 8rib already? I have same setup with 8rib on e85 and make over 600


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Old Wed, Oct-10-2018, 02:23:25 PM   #5
jony787
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Default Re: AA Stage 2 pulley requirements

I have the same question. Does anyone know the pulley size on the hks aa level 2 supercharger?

So far i found that the crank pulley is 4" or 102mm.
For HKS GT8550. Pulley to impeller ratio 9.368


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Discussing AA Stage 2 pulley requirements in the Forced Induction (F/I) Forum - Discuss the ever growing F/I options here! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)