Re: 1941 packard 180

Posted by HH56 On 2018/2/6 16:41:31

I don't know of any measurements accurate enough that have been published or taken on the heads to ensure they have not already been milled and are at a critical point. Just be careful in taking off more and by all means lay the heads on the block and check for valve clearance before putting the head nuts back on. There have been some unlucky posters who had heads milled for flatness only to find out they had already been at the limit. A couple of people managed to bend their valves because of a failure to check before torquing the heads.