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Arias 83mm piston ID help please
any help identifying these pistons would be much appreciated. these pistons were in a '69 2.0L. they are Arias, 83mm diameter, 40mm and 47mm valve pockets, rings are 1.5mm/1.5mm/4mm. the cylinders are bored birals. any info, like CR or common useage, etc. much appreciated. thanks much, Don.
   
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11-11-2009, 07:31 PM
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Registered
Join Date: Oct 2009
Posts: 99
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hi,
do you know about this ARIAS brand for pistons, it's the first time I've heard about thank you BR |
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11-12-2009, 07:58 AM
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Registered
Join Date: Jun 2006
Location: Texas
Posts: 2,325
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We used to use Arias pistons in our 2.0ltr SCCA DP 911. Ran sprint cams and forged rockers single plug, made 210hp.
They are still around, Arias Pistons |
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11-12-2009, 08:06 AM
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3 restos WIP = psycho
Join Date: Feb 2005
Location: North of Exit 17
Posts: 7,665
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Odd diameter - too small for 84mm cylinders, yet 2 liter cylinders supposedly can't be bored beyond 81mm safely.
They look like 9.5:1 CR.
__________________
- 1965 911 - 1969 911S - 1980 911SC Targa - 1979 930 |
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11-12-2009, 05:02 PM
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I called Arias today. the number inside is just a casting number. the tops are custom-cut from there. this weekend I'll try to get a ballpark CR on them.
I measured the thickness of the biral sleeve on the bored cylider, it's .10" on an unbored 2.0 biral cylinder it's .15" |
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11-12-2009, 07:27 PM
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912 SWB
1967 porch 912
