Join Date: Aug 2006
Location: Hagerstown MD
Feedback Score: 0 reviews
Re: 94 IDI turbo, Quickest easiest way to replace a head gasket, help
Ok, thanks for the replies, the truck has 173k. Spent the day pulling the motor apart in the truck. Took about three hours to figure out how to get the turbo off, what a piss poor design. Ended up loosening the compressor housing and clocking it to release the intake adapter pipe and then had to remove the compressor housing to remove the oil drainback line. The exhaust band clamp had fallen off so everything was goopy, black and stunk, me included. Had a bear of a time with the injector pump. The valley pan had pushed up around the pump (from the head gasket I hope) and had to be beaten back down the an aluminum punch and BFH. Pulled the plumbing and intake quickly enough after that and popped the drivers head off with a hoist. Head gasket was missing a one inch section between the center cylinder bores so the turbo inlet noise is explaned. Pulled the AC cover to pop the passenger side head off just because and it looked fine. Had some wear / erosion on a couple valve tips on both heads. Bores look fine, I'll clean them up some more in th AM. Buddy has two 7.3 non turbo motors for parts, hopefully the valves are the same. Had one glow plug not want to come out (unscrewed though) and one other that was missing the tip.
I did manage to drop a pushrod down a hidden hole in the lifter valley (heard it thunk on the oil pan) and managed to recover it with a pencil magnet and some patience. Otherwise once the turbo is out of the way it's pretty easy (I did pull the valve stem valves out to lower the truck a couple inches)
Pafixitman, I will pray for you.
FYI I just got finished turning three mid 80's Chevy trucks into a 30.5' crew cab diesel roll back.