14-08-2020, 11:54 PM
Hi all,
Moving on to the next "challenge" in our "light" engine overhaul...
As expected, the side water branch studs are heavily corroded. I know that a nity repair plate is (or was?) available to sort this, but on a previous occasion, on a different engine, I got these out, re-tapped the threads to clean them, and fitted stainless studs, which worked perfectly.
On this one, I cannot get them out - I've applied lubricant, heated the surrounding casting etc etc but the stud extractor or mole wrench slips on the remains of the stud - its' just possible tat if I could apply the torque the stud might move..
I have one idea that I'm considering and want to be guided on or talked out of - has anyone ever tried fitting a larger nut flush with the face of the block, then welding the nut to the remnants of the stud?
I suspect that the rest of the stud will then just shear off...
when that fails, has anyone ever had any luck drilling and chipping the remains of the stud out? or drilling then reverse thread tapping the studs to get the remains out?
Or do I stop wasting my time and move on to the repair plate quickly?
Thanks for any guidance or words of caution!
Best,
James
Moving on to the next "challenge" in our "light" engine overhaul...
As expected, the side water branch studs are heavily corroded. I know that a nity repair plate is (or was?) available to sort this, but on a previous occasion, on a different engine, I got these out, re-tapped the threads to clean them, and fitted stainless studs, which worked perfectly.
On this one, I cannot get them out - I've applied lubricant, heated the surrounding casting etc etc but the stud extractor or mole wrench slips on the remains of the stud - its' just possible tat if I could apply the torque the stud might move..
I have one idea that I'm considering and want to be guided on or talked out of - has anyone ever tried fitting a larger nut flush with the face of the block, then welding the nut to the remnants of the stud?
I suspect that the rest of the stud will then just shear off...
when that fails, has anyone ever had any luck drilling and chipping the remains of the stud out? or drilling then reverse thread tapping the studs to get the remains out?
Or do I stop wasting my time and move on to the repair plate quickly?
Thanks for any guidance or words of caution!
Best,
James