15-07-2021, 04:54 PM
Some years ago my chummy developed a serious leak on the block joint. I had promised to take the car to an event and there was no time to do the job properly. I removed the tappet cover and removed the Dynamo. The crankcase and edge of the block were thoroughly cleaned starting with Jizer and finishing with cellulose thinners. The car was left overnight and recleaned with cellulose thinners the next day. A thick bead of clear bath sealant was then applied, as large as I could make it continuously around the block. Once the sealant had cured the various bits were reassembled. The idea was for it to last for a day. In practise it was still in place and working 500 miles later. The seal was almost invisible and achieved a satisfactory temporary repair. To make it work the surfaces must be scrupulously clean, but it is only a temporary repair.