Stuck valves

[Matto]

I'm working on a moter thats been sitting for many years. Pistons are free and moter rotates 180'. Three exhaust valves are stuck. Two of the tappits seem to be stuck as well. Does anybody have any tips to free these up? If I disassemble the rest of the block, can I tap these out with a brass rod?
Matt

[Carls_jeep]

If the head is off and the side cover is off then I would use a penetration oil on the tappets and valves. Let them soak for a day or two. You can then use a brass drift straight down on the top of the center of the valve head and lightly tap on the valve. Don't hit it hard and be careful to not bend the valve. You can try a wrench on the body of the valve tappet to see if it will turn. You could grab the head of the valve with slip joint pliers and lightly try to turn it but try to keep from putting marks on the edge of the valve head. Be gentle because it's easy to damage things.

Which reminds me, I need a set of tappet wrenches now that I have a Jeep.

Some say that a 50/50 mix of auto transmission fluid and acetone works very good as a penetrating oil. Mix a small amount and keep it closed to prevent the acetone from evaporating.

[danorte]

Morning, I agree the best is transmission mixed with acetone. However second best I belive is PB blaster and a tincture of time. Spray all over valve stem and guide and wait a day, spray again and wait. Tapping on the valve head works but very large danger of tilting, bending the valve head. Not worriesome if you are going to replace the valves anyway. If valve is stuck and you do not want to hit it then use some heat,  torch, or hairdryer to heat up the valve guide and usually it will free up the frozen part. Remember lots of flammable stuff to set on fire so extinguisher at the ready. Let us know how you are doing. North

[Matto]

Hi everyone.
 ï¿½ � � � � � � � � I apologize for starting this post and then dropping it without a word. I live in Connecticut and the day after I posted this it started to snow. It kept on snowing untill we had over 36" on the ground. Many roofs collapsed on factories,churches,and commercial buildings as well as over 300 barns. We actually had to call out the National Guard to shovel off school buildings. Anyway, my Jeep is in a barn and I decided to let the project sit awhile. The snow is melting and spring is coming and i'll see if my oil soaked valves start to move. Brought another 3A home yesterday. �:)
Matt

[jamesr]

Your forgiven!  Hey stack them 3A's up like cordwood in the barn, so when we wear ours out we'll know where to go!  Jim