Removed the head... how's it look so far?

[skyler.robbins]

Hey Gang,
I'm doing an exhaust thread repair on the right cylinder.
I took a couple pictures of the head/piston area.
I noticed that the exhaust valve was a lighter brown color and had a lot of buildup on it.
The piston seemed pretty wet and oily.
I'll clean both up, but do you see anything out of the ordinary or I should be aware of?

[C.K]

Its ok in general. How many miles on it?

[312Icarus]

How does the bore look?

Icarus

[skyler.robbins]

54,000 on the speedo... however, when I bought the bike last Summer, it didn't have a speedo cable, so there's that.
Haven't checked the bore or anything yet... literally just pulled both heads last night and that's as far as I've got.
Both exhaust valves have a pretty good carbon build up on them.

Question,
How do I know which valve guides to order?
Do I have to wait until everything's apart and measure?
I'm seeing a couple different sizes out there on the nets.

Thanks!

[wa1nca]

Should be original not over sized if never bored to a larger size at some point
It would be wise to measure the old ones to be sure

Tommy

[malmac]

Not sure if R60/R50's had different sized guides but I am sure that the R69s had larger diameter guides.

Mal

[skyler.robbins]

Thanks guys...
Will get on it here in a couple days and measure up stuff/check bore.

[pokie]

With that kind of mileage, you should really consider doing the slingers. If you only rebuild the top end, the old slingers will be overfilled and a seizure may be imminent. This is also a good time of year to do the slingers as you may need to send out the bottom end, shops will be looking for work.

[skyler.robbins]

With that kind of mileage, you should really consider doing the slingers. If you only rebuild the top end, the old slingers will be overfilled and a seizure may be imminent. This is also a good time of year to do the slingers as you may need to send out the bottom end, shops will be looking for work.


No slinger cleaning this time around.
Probably next Winter.
I'm trying to contact the previous owner to see if perhaps he did it or knows when/if it has been done.

Got a chance to clean up the pistons and look at stuff.
Everything is looking great.
Here's the numbers on my pistons.
71 95
2/68

I'm guessing the first numbers are the size?
Second is manufacture date?

My bike is a 1969

[malmac]

Yes they look nice and clean and that is promising - no obvious scoring for instance.


However it is about the clerance - if the wear is well beyound the factory tolerances - then it will rapidly burn oil, foul up and not be happy.

Just measure it up so you know where you stand.


Mal