bore size

[tomwood_uk]

Can anybody tell me standard bore and piston size on the aby engine please. The guy at the machine shop thinks mine may have been bored out

[Error404]

81.00mm bore and pistons are 80.98mm IIRC

Not a problem if it been bored, as these blocks can take several overbores in 0.25mm increments right up to 82.5mm before the headgasket becomes an issue

[caterpillar]

82,50 are the 2,3 liter ( NG and 7A code) but 220 blockheight...

[tomwood_uk]

81.00mm bore and pistons are 80.98mm IIRC

Not a problem if it been bored, as these blocks can take several overbores in 0.25mm increments right up to 82.5mm before the headgasket becomes an issue

Thanks, it appears that it hasnt been bored out. Perhaps the engine machinist was looking at specs for the 7a engine. Ill pop over over tonight and let him know

[Error404]

who is doing your machining?

[tomwood_uk]

who is doing your machining?

CME in Rugely (used to be called Autopower).

[Error404]

Local to me and not one that I know of, let us know how you get on with them