Does anyone have the factory range for the diameter of the crankshaft main bores, NO bearings. It should be the spec that machine shops reference when align honing but I can’t find it anywhere. Also what size mandrel for align honing? If you have the info please let me know where you found it.

thanks

 

Ok I found the info in case someone else needs it later. Main bore size: 53.998mm-54.018mm. 2.1259”-2.1267”. This is from ACL. CLEVITE also has it listed as 54mm-54.01mm and 2.12160”-2.1267”

 

At least ACL can do a proper conversion to inch.

 

Sorry. That was my fat fingering. It’s 2.1260”-2.1267” from clevite.

 

 

Lol. I just got my block back from getting decked and was able to measure the main bore that the other Shop aligned honed on Tuesday. 54.00mm exactly. So I guess the spec we referenced in this thread is indeed accurate for those in the future who want align bore and hone information. Thanks for the help y’all.