Wow - thanks for the responses. I had been looking at this problem for a week and had considered various ways to fix it or replace it and the associated costs.
I don’t know the history of the bike. I rebuilt the carb got it to run, but it blew smoke extremely bad. I assumed the rings were bad. I pulled the head and cylinder. The piston was trashed and the cylinder needs bored. Then I saw the loose valve guide. I was hesitant to start spending money when I hadn’t had a chance to ride or assess the condition of the rest of the engine and bike yet . I did not want to tear down the whole engine if it OK.
I thought of making an oversize guide but then would need to consider the cost of a .218 reamer and having the seat recut if needed.
I called two cycle machine shop and they said they couldn’t repair the head and that it was best to find a new head. Many OEM parts are no longer available. Looked on EBay for a used head. I didn’t see a moderately priced one that looked good, plus I assume the valve seats would need recut or lapped - to mate with my valves ????, more cost.
I thought maybe the "gluing" or staking may not affect the existing valve seating. The valves have two springs. Since the inner spring sits on the flange of the guide, I would think it would help keep it pushed into the hole.
I really like to do projects the best that I can do them, but I told myself (and my girlfriend) that I wasn’t going to "go crazy" on this project and spend any more money than necessary. (That probably won’t happenJ)
Here is what I will do….. I have enjoyed working on the bike and was looking for a project – so I decided that before I spend money on the cylinder and head, I will just go ahead and tear down the whole engine. Hopefully I will be able to spot any potential problems.
Looking on EBay yesterday I found a head - that I had not seen earlier- that included valves (no recut – just lap?). It was listed as “excellent condition” for $29 and $13 shipping. From all the others I seen – this was a steal. For that amount – I’ll take the chance that it is decent and have it on hand . If I decide the bike is too far gone, for my budget, I can resell it.
Thanks guys. All my “car smart” buddies have passed on so I really appreciate you guys for taking the time to share your knowledge and experiences.
Thanks, Jim