Like Scotti states "Fix it right"does anyone use synthetic oil. my top of the valve guide broke so I cant use a valve seal on the intake. would it be a good idea to use synthetic oil so it don't build up carbon on the valve? thank you.
Well then, i'm one of the exceptions to that. Shell Rotella T4You could always replace the valve guide. Fix it right, you and your bike will be happier in the long run. I think most of us are using a motorcycle specific synthetic oil. Good oil equals less wear and better shifting. How did the top of the valve guide break? Never seen this happen without a little help.
Others on this forum better qualified to answer, than I.ihow long do the rings hold up in these?
Valve stems mushroom from running it without the proper valve lash set (too loose), always file around the top of the stem with a fine file when it occurs so you can get the valve out without damaging the guide.it had a burned intake valve, the end of the stem was mushroomed and removing it ? how long do the rings hold up in these. I bought it not running with 12000 miles on it. I just wanted to get it running until I could see if it shifted ok or had any other problems.
Others on this forum better qualified to answer, than I.
Meanwhile, that is a loaded question, as it depends upon:
1. Was it properly run-in?
2. Was it ALWAYS allowed to warm up before working hard?
3. Did it spend a lot of time at higher RPMs?
4. Oil changed frequently?
5. Good quality oil?
I used dino until 1600 miles and switched to synthetic. Some machines are tightly machined from the factory and come with synthetic - like Rotax motors - the Dub (imo) needs some time to "mate up" moving parts. There are definitely differing views concerning this - I like to err on the side of safer.Just passed 800 miles. Changed the oil at 65 , 150 and 400 miles (oil is cheap) . What are the thoughts on how many miles before changing to synthetic?