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Registered
Join Date: Jul 2002
Location: Sydney, Australia
Posts: 2,477
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Tolerances for boring 80mm barrels to 81mm
hi all,
does anyone know the tolerances to specify when having 2.0 litre Biral barrels bored and honed to 81mm (most likely for use with 81mm JE pistons)?
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Cheers, Ryan 1969 911E (historic racer) 911ST replica (tarmac rally) |
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05-04-2009, 08:26 PM
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Registered
Join Date: Jan 2005
Location: KENDAL,CUMBRIA, UK
Posts: 1,580
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HI obrut
have just built a 2.0Lt at 81mm bore and J.E. pistons and the 2nd is on it way, the paper work in both sets where the same;   the paper work is for the piston above. regards mike
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Regards mike 1983 911 SC sport, 1982 mini city |
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05-05-2009, 12:00 AM
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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05-05-2009, 02:42 AM
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Registered
Join Date: Jul 2002
Location: Sydney, Australia
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mike/john,
thanks for the replies. am i correct the .08mm suggested clearance means the bore size should be the piston diameter (say 81mm for example) at the measure point plus 2 x .08mm? any idea what tolerance should be put on that calculated diameter?
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Cheers, Ryan 1969 911E (historic racer) 911ST replica (tarmac rally) |
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05-05-2009, 03:23 AM
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