I have seen the light!

[Roger]

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...

 

[Nick Jones]

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

[Colin Lindsay]

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?

 

[JohnD]

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!

[Roger]

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.

[Roger]

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!