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A frustrating engine upgrade story
I was into my 4.0 for some maintenance, knocking lifters. I bought new sealed power lifters a remanufactured cam, rebuilt rocker arm assembly's ,and new pushrods (also gaskets and head bolts). Tore into it, put the new cam in.
Installed the timing cover and attempted to install the new lifters. I ran into about half the bores would not accept the new lifters. I found this!
A small bulge in both sides of the body where the mfg installed the guide pin. Only the 1st prob more to come. After removing the excess metal I got the lifters to move easily. I installed the heads, gaskets, lifters, and rockers and rolled the engine over by hand. Three of the brand new lifters stuck on the first revolution, frustration begins. After all attempts to revive the sick lifters none worked, so the effing heads came back off and three lifters got returned and replaced with new head gaskets and bolts AGAIN!
Before installing the three new new lifters I test cycled them on the bench, one of the three stuck. Pissed off as hell I was desperate. I took the stuck lifter and with a small butane solidering torch heated around the internal plunger and it released. After the next few test plunges it continued to work. Talk about a frustrating couple of weeks, finally got it back together.
I was into my 4.0 for some maintenance, knocking lifters. I bought new sealed power lifters a remanufactured cam, rebuilt rocker arm assembly's ,and new pushrods (also gaskets and head bolts). Tore into it, put the new cam in.
Installed the timing cover and attempted to install the new lifters. I ran into about half the bores would not accept the new lifters. I found this!
A small bulge in both sides of the body where the mfg installed the guide pin. Only the 1st prob more to come. After removing the excess metal I got the lifters to move easily. I installed the heads, gaskets, lifters, and rockers and rolled the engine over by hand. Three of the brand new lifters stuck on the first revolution, frustration begins. After all attempts to revive the sick lifters none worked, so the effing heads came back off and three lifters got returned and replaced with new head gaskets and bolts AGAIN!
Before installing the three new new lifters I test cycled them on the bench, one of the three stuck. Pissed off as hell I was desperate. I took the stuck lifter and with a small butane solidering torch heated around the internal plunger and it released. After the next few test plunges it continued to work. Talk about a frustrating couple of weeks, finally got it back together.
