Roger Posted April 23, 2020 Report Share Posted April 23, 2020 I have spent a lot of time lately to clean up the water jacket (thanks for teaching me proper English @JohnD) in my PI block. Words fail to describe how much rust and dirt I found there! When I used my flashlight to evaluate my progress I noticed by coincident that I could also see the light through one of the threads for the bolts (see picture). That reminded me of one of Colins threads about ”potential leaking stud on engine block”. I started thinking ”maybe I’m not supposed to see the light through those threads??” What was the case when the engine was new? Please enlighten me... Link to comment Share on other sites More sharing options...
Nick Jones Posted April 23, 2020 Report Share Posted April 23, 2020 Don't panic - that's normal. Sometimes the one on the other side of the core plug also. Those two holes should have studs in them, not bolts and be installed with a thread sealant. Nick Link to comment Share on other sites More sharing options...
Colin Lindsay Posted April 23, 2020 Report Share Posted April 23, 2020 Just beat me to it! As I was the cause of the concern I was looking for a photo of mine, but of course can't find one when I need one! Roger - if you need a photo of my 1200 Herald block which has been stripped down I can take one for comparison? 1 Link to comment Share on other sites More sharing options...
JohnD Posted April 23, 2020 Report Share Posted April 23, 2020 3 hours ago, Roger said: (thanks for teaching me proper English @JohnD) in my PI block. Words fail to My work here is done! Come, Tonto, away! 1 Link to comment Share on other sites More sharing options...
Roger Posted April 24, 2020 Author Report Share Posted April 24, 2020 10 hours ago, Nick Jones said: Sometimes the one on the other side of the core plug also Yep, that one too! Thanks Nick. I plan to pour some kind of acid in the water jacket to remove the remaining rust as a final cleaning step after I have shoveled out the most of the loose dirt, sand and rust manually. So I just have to remember to plug these holes before the chemistry session begins. Still a bit chilly here on the island for working outdoors, will save that for a sunny day. Link to comment Share on other sites More sharing options...
Roger Posted April 24, 2020 Author Report Share Posted April 24, 2020 10 hours ago, Colin Lindsay said: if you need a photo of my 1200 Herald block which has been stripped down I can take one for comparison? Thanks for the offer Colin, but I think I have the knowledge and the remedy needed now. Thanks! Link to comment Share on other sites More sharing options...
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