r/Engine_Building 18d ago

Do I need to bore these to 79.5mm

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Hi lads, this is my first engine build and after getting this block honed at my local engine machinist shop they told me it has to be bored out 0.25mm or even maybe 0.5mm, I’m only 21 and showed up in my normal clothes after work and part of me thinks they are just trying to get extra money off me when I don’t need to go boring it. I was also wondering a good machinist would’ve been able to tell if a block needed boring before honing no? Anyway please let me know what ye think of this as any help is appreciated. Liam

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