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Main Bearings Ovaled

Practical Engine Building

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Good evening, I just received my block from the machineshop and measuring the main bearings to verify the oil clearance I find that at 12 I have 10 tho, at 10 I have 15 tho and at 9 I have 20 tho. The block went to the machineshop to oversize the pistons bore and to align the main caps because I'm going to use ARP main studs. The question is, is it too oval to use? I'm sure yes, but I wanted to check before talking to the workshop. The engine is an Isuzu 1.6 16V DOHC.

Hello yes you are 100 percent correct you need to take it back to them to rectify

Thank you very much! I`ll post the solution we find for the other members.

We usually reply within 12hrs (often sooner)

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