Re: Cracked block on 1922 Single Six

Posted by Tim Cole On 2014/7/17 13:01:08

Hi Richard:

From your note I infer this problem came without warning and that the car had anti-freeze in it. So it simply cracked without overheating or freezing?

If that is the case the block may be worn out. Or it was overbored. Generally .045 is the service limit. I've seen .060 over on Packard 8's along with heating problems. Going .080 over without sleeves is going to cause real problems.

I've been told the V-12 will crack at .080 over and I replaced a 56 Carribean motor that had cracked at .080 over.