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yeller77

910 Line bore spec

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Can anyone confirm that the main bearing line bore dimension is 2.4995-2.5005 in. for mains 1-4 and 2.5000-2.5005 in for no. 5? Thanks all.

Eric


77 Esprit S1

Rebirth in progress

"the $6 m. car!, we can rebuild it, better, stronger,.....faster!"

94 RX7 R2, Mazdaspeed bits

2016 NB Focus RS

1944 Willys MB rescue

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Thats what it says in my copy of the servicing notes for crankshaft journal diameters for 910 series engines. If you're talking line boring the block, you need to take account of the thickness of the bearing shells to get the diameter required. The max undersize for reground journals is stated as 0.0200 in. if you intend to grind the shaft.


Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein

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Reading on, I think I found the spec to be 2.6660-2.6655 in. in non-oversize trim.

E.

Edited by yeller77

77 Esprit S1

Rebirth in progress

"the $6 m. car!, we can rebuild it, better, stronger,.....faster!"

94 RX7 R2, Mazdaspeed bits

2016 NB Focus RS

1944 Willys MB rescue

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