Hi Barry, interesting, your bearings are well knackered and I assume your crank journals are scored, it would have been interesting to see those too. Thirty thou is probably at the limit as Stag crank journals are a bit weak anyway, an engineer could advise. If it is still usable do remember Stag cranks are steel and not cast iron making them softer, any grinding means tuftriding or nitriding to harden the surfaces up otherwise they will fail again very quickly. A good used one may be the best way forward.🤞🤞
Hi Ian, you are quite right, the crankshaft is scrap. The only thing that I can do with it is reweld the journals and regrind them to std and start again. Oddly enough the thrust washers are in an acceptable condition which is a surprise considering the mess the rest of the engine is in. Thankfully I have a spare engine that I can dive into, and I think that it will brush up ok. The next video will be about the oil pump.
Yes interesting let us know the rest of the rebuild, not many stag hands on spanner jobs help tips listed , mainly mint cars , in my experience+ 30 is the limit as mentioned, biggest cause of failure is using thin modern oils , stag engine 20/50 high zinc oil because running clearance thin oil gets washed away and metal to metal will destroy crank , it was designed in the sixties so run with old classic oils. The oil pump has an Eaton with built in pressure release which is not the best design iv known two with broken springs and have changed one to a known quality one , thanks for sharing,
Hi Steve, thank you for your comment. I was told the this engine was "working perfectly" before he pulled it out to do a little bodywork. I think that I can safely say that this engine has all the faults you could wish for all in one place. Stick around as the oil pump examination is net on the upload list, I hope you enjoy.
