When installing the head and timing chain, I noticed that some of the coolant passages on the OE bluebird headgasket weren't as large as the others.

The coolant passage holes are good around the #4 cylinder but the other 3 are only 1cm diameter holes whereas the actual coolant passage in the block/head are ~1in oblong holes. Would this pose a problem with overheating?

I enlarged one hole in the head gasket to a similiar size but it was a PITA and is not as clean as I'd hoped.

Any suggestions?

TIA

laterz...Jody