Grumpy and Joe,
Thanks for the comments - It makes for an interesting thread. I havent had a chance to pull the engine down yet as I've been doing a few other jobs.
I am interested in what you mentioned Grumpy about putting a teaspoon on oil down the plug hole to see if the compression increases. If I read that right, id like to try it.
I will pull the engine down when I get some spare time so I can learn from it.
Funny thing is I got given another GMC which has a 375 Briggs that actually has a snapped rod. It must of went off with a loud bang. What I didnt understand though was the engine had plenty of oil (I am thinking however the owner must have added some oil after it went bang) Nevertheless I'll eventually pull it down to ensure I get all the usable parts off them both.
