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01-26-2003, 11:59 AM
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Registered Member
Join Date: Apr 2001
Location: Hampton, Virginia
Posts: 227
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Piston to bore measurements
I just took apart the old 289 and measured the pistons and bore because I want to freshen up the engine. I measured the pistons and they read 30 over on the top of the piston but they were actually 9 under the zero mark (4 inch mark). the bore of the engine came out to be 30 over. Did the person before me rebuild the engine right or can I go ahead and just re-ring the engine and leave it as is. This is going to be the drive around engine, nothing high performance. The pistons in there now appear to be aluminum or that hyper something or other pistons. I never had any problems with the way the engine ran but when I took it apart several of the top rings were cracked.
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1980 RX7 with 289 Ford V-8 bored .030 over, Very radical cam, Torker 2 high rise intake, Holley 650 Carb, MSD Nascar 6ALN ignition, MSD coil and distributor, Headers with dual open side exhaust. Over 300 horse. 1966 Mustang still in progress |
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