layback40 wrote:
ROKTAXI wrote:
Thanks to
geordi my Jeep is back on the road again. So many pieces/parts and not to mention know-how that come into play on this project. Even tho I'm no stranger to "mechanicing", this little 4-banger is like working on a watch compared to the Chevy V-8's of yester year I've had lots of experience with.
Thanks again Jim!!

Glad to see this had a happy ending!
What was the prognosis & what was replaced?
The initial guesstimate was that the belt had let go - with mileage estimated somewhere around 60k on the engine / 140k on the vehicle, that was unusual but fit the scenario.
When I pulled the front cover off though... Wowzers that belt was trashed. It had snapped right at the base of one of the teeth, but ALL of the teeth had kevlar exposed in the valleys between! Not just a little bit of kevlar either - it was FULLY exposed across the width of the belt, this sucker NO WAY AT ALL had just 60k on that belt.
The original owner got taken for a ride by a dealership, to the tune of around 10k spent. Poor sucker was into the Jeep for north of 25k with the cost plus buying the thing. They made him buy a long block (which to my understanding SHOULD be a complete motor, head, valve cover...) MAYBE not including the fuel pump, but the thing had a $3500 core charge! That's a LOT of money for just the rotating mass. But if the dealership pulled the old belt / fuel pump / accessories and put them on the new engine, that's a COMPLETE screwup b/c it's right in the service manual that you DO NOT reuse the belt when it comes off! The only belt I've seen in worse condition had over 200,000 miles on it and miraculously hadn't broken. The lifters in this engine (that were about half broken b/c of the belt) were the new style, so the dealer must have had this thing in pieces at some point in the process. One of the injector wells DID NOT have a crush washer either. How it wasn't leaking badly.... No clue. If the dealer assembled the engine and put in the head bolts, that could explain their torque. Some of those were well over 150 lb-ft to release, and ALL were more than 130 lb-ft. Some of those suckers were insanely tight.
But the engine has now been cleaned and properly reassembled with ARP studs, and should be good to go. Without any reasonable way to predict the actual age of the engine / valves, that is something of an open risk for the future, but the engine is otherwise in very good running condition. The Jeep itself is in great shape.