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Might have found the problem with my m38
Posted: Sat Apr 19, 2008 5:17 pm
by Bill_F
Took the head off my m38 today. Seems the head gasket failed. I dont have my manual with me I need the torque specs for the head and the order to torque the nuts.
Posted: Sat Apr 19, 2008 8:29 pm
by DJ
65 -75 ft lbs basicly start at the center and work out and end to end, center,right -left/towards back center, right- left/towards front center right left/ repeat,repeat
Posted: Sun Apr 20, 2008 2:50 pm
by Bill_F
now the real problem has been found and it was not a head gasket. On #1 cylinder the exhaust valve, seat, and guide are shot. How hard are they to replace?
Posted: Thu May 01, 2008 7:37 pm
by Ryan_Miller
Bill,
Did you have that engine rebuilt?
Taking the head off and working on the valves should not be too bad.
Posted: Thu May 01, 2008 7:46 pm
by Bill_F
The guy I bought the jeep from said the engine was rebuilt. When I first got the jeep I pulled the valve cover off and everything looked good. So I had not reason to doubt him. After we pulled the head the rest of the engine does look good as well other than the one valve problem. My brother plans on pulling the engine this weekend and tearing it down, then bringing it to the machine shop. While it is there the guy is going to check everything since it will be apart. We are taking it all the way down to make sure no metal shavings from the guide got into the bearings.
The machine shop is going to check all the valve guides. If he finds anything wrong he is going to bore out the current ones and had brass inserts, he likes those better than the ones you can buy now.
Posted: Mon May 05, 2008 5:03 am
by Bill_F
My brother pulled my engine yestarday and took it to the machine shop. The guy as the machine shop is going to check everything over and fix the broken valve. I will also need new bearings, seems some of the metal from the guide scored them a little, didnt hurt the crank at all. Dont know how long it will be before my engine is back together again.