I was at my local scrapyard a couple of days ago & stumbled onto a nice looking 3hp Briggs (080302 1516 01). It was missing a couple of parts so I walked away. I got a couple of feet & spotted a second identical engine with the missing parts. I took them both home for $9.
Anyway, one has good compression (90ish dry) but a major oil leak where the PO stripped out, then attempted to oversize, the lower pull start housing bolts. Of course, there is a dimple in the casing on the inside so the oil leaks now leaks.
How do I fix this? Is this a braze & pray type repair? How do I get it clean (oil free) enough to braze properly? Is the case made of aluminum?
I was thinking JBWeld, but if it lets go, things may not work out well with a lump floating around.
The other engine has lower compression (65ish dry, 80ish wet) but holds oil, so I've robbed the first engine for the parts to get it running. I'm going to run some Seafoam in the oil and the gas to see if the compression comes back.