I tried lapping the valve, used a drill... the valve seat still has deep pits, didn't want to grind any more as the valve face and seat are starting to curve. Really not sure what to do about this..

 Hi
   That's just what I was after, I ordered a micrometer and it should be here Monday. Now I'll just have to figure out how to read it....

 Thanks

Thanks for the link....

Hi
 Anyone know of a source for rod bearings (23/220) for a lister ce. Not sure if other models, like a jp would work. Also has anyone had these bearings rebabbited and what the cost would be..

Thanks..

Hi all..
 I have purchased a 1950 lister CE and am in the process of dissasmbaly and have found a exhaust valve and seat that are pitted badly. From what I can figure is the opening to the expansion chamber in the changeover has been blown out, and the debris damaged the valve and seat. I have a new set of the shafts but not the half bowl that makes the expansion chamber. Not sure if I should use the new shafts without replacing the half bowls, as the old shafts would be mated to the old bowls.. Also not sure if the bowl part of the expansion chamber is similar to other model lister...
I have attached some pics of the bowls of each cylinder,

 To me it looks like the damage has been done, could it be run like this..

Any Ideas.... Thanks..

Hi
 I have replaced the bearings in the metro, and installed a bronze idler gear. This is a new to me Metro with low hours I believe... I ran it for a few hours with the original steel idler gear and found lots of metal on the magnets,some of the metal looked like small wood shavings.

 Now with the bronze idler gear I am finding lots of suspended bronze in the oil. I have read on the subject and my guess is that the backlash is either too tight on a gear or to loose on another. I can not hear any noise from the gears while running. Any chance you could tell from the pictures whether I should run the engine and let the bronze idler settle in or should I come up with another fix.

Thanks.. Dave..

Thanks for the reply..

 Could be, the crank would not rotate heavy side down without help. The piston, idler gear disconnected with the flywheels off.

 

Thanks for the reply Gary....

 I paid $150 for the sl3, with just rings ,bearing and machining I will have close to $700 invested. The problem i am facing is i am doing this as a hobby, I plan on reselling the sl3. But then again it might be hard to sell it if I must tell every potential buyer that the pistons have cracked piston inserts. I really don't care if I make a dime on it, just want a happy buyer...