4.0L SOHC Pulling the SOHC for inspection

[red78ta]

Got back from Anchorage and went fishing, my buddy and I got two cohos and 17 dungee crab. And it was a nice day out on the water. Got back to the ranger today, and I’ve got her almost all stripped down. I did a leak down test once the roller followers were off and three jugs were great and 3 jugs were bad and leaking thru the intake. (Not all on the same side). The timing kits inside were still on but had obviously started to fail. Pulled good chunks of plastic out. I’ll take the heads off tomorrow and decide how to proceed with the valves. I learned a few things from the first time around too, like stretching a garbage bag around the engine when I flip it over fluids runoff into it and not onto the floor.

 

[red78ta]

Decided to go back out tonite bc I wanted to redo the Leakdown and recheck bc it didn’t seem like the amount of air coming from the intake ports would account for how bad the cylinder was leaking. And yea upon further investigation I could hear air hissing from the crankcase as well… so looks like rings are on the menu now, and if I’m doing rings might as well put new pistons in as well.

Anyone have a recommendation for a good piston/ring set?

 

[red78ta]

So I thought more about it and I’m just gonna go with new rings. The pistons look good, they weren’t contacted by any valves, and then I won’t have to rebalance anything. So I ordered up some parts and now get to clean, label, and wait.