So I was playing in the shed today as you do when it is the Brisbane show day public holiday.

I was comparing a head gasket to the face of a 12G940 head when I noticed the head was rattling. Something was in the water gallery. Turns out there are some core support bars that are meant to melt during the casting but didn't and have been in the water jacket for ever. I dug them out, see the pics:

Here's what I could see through the heater tap hole after I had already broken off some little bits:


Here is the whole lot sort of re-assembled. The thin bits were attached to the other parts.


There are some other dags visible in the thermostat well where the halves of the sand cores meet. I snapped a few off with a screw driver.

When people complain that their car overheats, maybe they have a poor casting? This one just rattled and didn't seem blocked but if it didn't rattle I wouldn't have gone fishing in there with a coat hanger.

M

bloody hell!

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did I tell you that I won a trophy?

Friday cast, Monday machine ! No 6S quality systems in the 60's ?

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'78 1275 LS (Under Repair, Dependant #1's car)
'72 GT Powered Clubman (Mine)... Under (re) construction

It definately wasn't a Wednesday casting & machine, lol.

Brad

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During the day I work on English designed cars & on my own time I work on English designed cars....

Be Buggered eh , did you have much trouble getting the long piece out ?

yep, the later castings were very poor in comparison to the earlier versions & that looks "late-ish" one to me

the A+ blocks were so bad that probably more than half of them were sleaved from the factory because of it

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.