I have my 4.0 Jep engine tore down, ready to be checked out. I have some questions maybe someone can answer as I have never messed with these engines before. I have a lot of 232/258 time behind me, though. First, the soft plugs seem to be 50 MM in size, is this correct? I assumed they would be standard sizes, but in comparing them I came up with 50MM. This engine came out of a Jeep that must have been rode hard and put away wet as every oil galley hole was plugged with dirt. Maybe a mudder?? The crank was in good shape and the engine still ran. What should I look for. I have it stripped bare and will hot tank it and measure the taper, bore, crank align, etc. I plan to put a 258 bottom into it, any year suggestions. The 4.0 is an '87. What should I do to the bottom end? Thanks all......Russ __________________________________ Yahoo! Mail Stay connected, organized, and protected. Take the tour: http://tour.mail.yahoo.com/mailtour.html