Did a compression check to day had some severely low cylinders. Wet test brought them up around 40 pounds each. Should I do the leak down test or just accept it as rings....it is a 94 ram 5.2 with 150k new project but don't think it's had anything done to the plenum gasket or pan....magnet sticks to it covered with oil looking through tb

 

Leakdown will tell you where the leaks are, but, my guess is going to be: Everywhere. It's rebuild time. If they were only 40 pounds on a wet test...... you can pretty much figure on badly scored cylinder walls too.... (I.E. Oversize piston time.... and a bore job.)

 

Kinda what I figured new to the dodge world wasn't sure how badly the plenum problem and mag head problems could affect

 

Considering a long block or good used engine any suggestion on a good place to check on one. Need the truck to drive while I build another motor

 

Grab an inexpensive one from the local junkyard. stuff that one in there, while you rebuild the one that's currently in it. (if it is salvageable....) Doesn't have to be perfect, just needs to run reasonably well.

 

I believe precision engines has a rebuilt motor for around 1200 + core. iirc.


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i wouldn't mind knowing the dry results of the compression test. did you hold the throttle all the way open when you did the test with a warm engine? any result over 100 psi are ok as long as there is not too big of a difference in compression between the highest and lowest compression cylinder. why spend $1000's of dollars on a new engine if there is not much wrong with the engine.

 

good point. should have put more thought into it.


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If it is rebuild time, I would hit Craigslist and search "Parting Dodge" or something to that tune. I have had great luck snagging good engines for $200 or less because somebody didnt want to swap a new tranny into an old truck. Then, when you finish your rebuild, turn your temporary replacement engine into a stroker. Lol... or re-sell it.

 

If the current one is running, I would pick up another from JY and build it, then trow it in there. Save a step and reduce pulling and installing one time!