12-10-2020, 01:01 PM
Noticed a dribble of water around Nos 1 and 2 spark plug recesses, looked like the top water outlet itself was leaking, but may have been the gasket. Having removed the top hose, saw that the water had leaked through the aluminium casting!! On removal, it fell apart in my hands (Honest govner, I didn't break it ! ). The stud which had been welded to the head as that bit of the casting had rusted away is not in good health. Its a 5/16" stud rusted away to just under a 1/4, so I think it will do for a few more years yet.
My question, do you think that steel stud, Al alloy branch and brass nut increased the corrosion rate, and was it the brass nut that is the culprit. Its been like that for 25 years or more, or was that good going anyway ? Ps, I don't use antifreeze, just drain down if its going to freeze and re-fill with the original water.
My question, do you think that steel stud, Al alloy branch and brass nut increased the corrosion rate, and was it the brass nut that is the culprit. Its been like that for 25 years or more, or was that good going anyway ? Ps, I don't use antifreeze, just drain down if its going to freeze and re-fill with the original water.