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Old 01-02-2004, 07:24 PM   #1
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Default Sirio S12 TUP PRO

Can anyone give me a "heads-up" on the Sirio S12 TUP PRO?
What is AAC an acronym for?
ABC=Alum./Brass/Crome. Understood.
AAC=Alum./Alum./Crome????
If so, what are the pros and cons of such design?
Thanks!
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Old 01-03-2004, 06:25 AM   #2
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I had one but didn't like it so I sold it it to a friend of mine. It doesn't have the low end punch and a screaming top end compare to a Nova. The AAC means Aluminium piston, Aluminium sleeve plated with Chrome. The advantage of AAC is the piston and sleeve expand at the same rate so supposedly give a good compression at any temp.
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Old 01-03-2004, 06:37 AM   #3
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I have sirio aac and It gives the same power with any stock engine. Thats include nova.
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