Posted by jeff on July 10, 2005 at 17:43:57:
In Reply to: Posted by on July 10, 2005 at 17:08:00:
: : Glad to hear your valves were not stuck.
: : As for leded gas, yes the engine needs it, especially if you intend to drive it as your primary vehicle, the led lubes the valves in the valve guides. When I rebuilt my engine, I had hardened seats, guides and valves installed, but you may want to talk to a machine shop and ask them if you need to do all that.
: OK, so explain what I need to do, exactly... We just got our '48 CJ2A and want eventually to run it in parades and to historic events as both my husband and I are historians and have no way of obtaining leaded gas....
: Thanks for educating me!
this has been debated many time over the years hear and on numerous other sites. many have found that due to the low compression of the lhead that unleaded gas is not a problem while others feel that if you do a rebuild, you should prep the motor for unleaded gas by installing hardened seats, valves, etc. From what I have read over the years, it seems to be more of an urban legend issue for "these engines" than it really is. so FWIW, if you rebuild you may as well upgrade if not, don't worry about it.