I hate starting new threads, but I feel like I have to just to confirm my suspicions before I go ahead and order a rebuild kit for my 22r. A couple weeks ago I bought a 1980 4x4 long bed that has a newer transplanted 22r with a 5spd mated to it. Overall its a pretty decent truck but has quite a few areas needing improvement, which is exactly what I wanted. I was told by the previous owner the top end was rebuilt within the past 10k miles but hasn't been driven much for the past six months.
So after driving it home and it was leaking from the rear main seal I just figured it was par for the course. It seemed that it only leaked after driving it some distance, as it would drip quite a bit right away when I parked, but would not continue. I pulled the tranny and replaced the clutch and rear main seal...noting that the old seal looked completely fine and there did not seem to be any excessive wear on the shaft. I tightened down the oil pan bolts and that gasket seems to be intact and not leaking. I am no pro mechanic, but I have successfully replaced rear seals and clutches before, so you can imagine my dismay when it leaked exactly as before after the next time I drove it.
I have gone over the truck thoroughly and am confident I am not leaking from anywhere else. After researching the crap out of this i started thinking maybe I am having excessive crankcase pressure build up. The pcv valve does not seem to be malfunctioning. Also the oil that is leaking is pretty black despite there being maybe 100 miles on it since changing it during the seal replacement. So I did a compression test.
Here are my numbers dry: #1= 107 psi, #2= 105 psi, #3= 110 psi, #4= 110 psi. Wet #'s: #1= 121, #2= 139, #3= 147, #4= 176. I know those are super low dry pressures, and the wet numbers seem to indicate bad rings.
I know what this is telling me....and I am pretty sure the consensus will be that i am screwed and need to rebuild. But I don't like to spend money for the sake of spending money. So if somebody sees something obvious or has some logical areas they think I can make improvements it troubleshoot before I yank the motor I would appreciate the feedback. I have never rebuilt an engine before and am kind of looking forward to the prospect, however I want to make sure I am making an informed decision. Is it even worth doing a leak down test at this point?
So after driving it home and it was leaking from the rear main seal I just figured it was par for the course. It seemed that it only leaked after driving it some distance, as it would drip quite a bit right away when I parked, but would not continue. I pulled the tranny and replaced the clutch and rear main seal...noting that the old seal looked completely fine and there did not seem to be any excessive wear on the shaft. I tightened down the oil pan bolts and that gasket seems to be intact and not leaking. I am no pro mechanic, but I have successfully replaced rear seals and clutches before, so you can imagine my dismay when it leaked exactly as before after the next time I drove it.
I have gone over the truck thoroughly and am confident I am not leaking from anywhere else. After researching the crap out of this i started thinking maybe I am having excessive crankcase pressure build up. The pcv valve does not seem to be malfunctioning. Also the oil that is leaking is pretty black despite there being maybe 100 miles on it since changing it during the seal replacement. So I did a compression test.
Here are my numbers dry: #1= 107 psi, #2= 105 psi, #3= 110 psi, #4= 110 psi. Wet #'s: #1= 121, #2= 139, #3= 147, #4= 176. I know those are super low dry pressures, and the wet numbers seem to indicate bad rings.
I know what this is telling me....and I am pretty sure the consensus will be that i am screwed and need to rebuild. But I don't like to spend money for the sake of spending money. So if somebody sees something obvious or has some logical areas they think I can make improvements it troubleshoot before I yank the motor I would appreciate the feedback. I have never rebuilt an engine before and am kind of looking forward to the prospect, however I want to make sure I am making an informed decision. Is it even worth doing a leak down test at this point?
