Discussion Starter · #41 ·
Okay defiantly seeing transmission fluid on the bottom of the pan however not leaking out the bell housing. Sooo thinking it may be a transmission pan gasket leak. Either way may have a transmission special look at that and redo all seals. Little out of my league and know how.1. ... Not different. ... Was it leaking? (although it may be impossible to tell if engine oil was leaking from above it)
... See 2 below
2. ... Screen "appears" ok, so poor oil press issue is likely either pump or main and/or rod bearings (and/or crank); or slim possibility of something else.
... Inspect the old pump: remove the 5 cover bolts and check internals and housing for damage/scoring etc; knock out the roll pin? and check for stuck relief valve, and/or broken spring.
... Even if pump is bad; imo brgs should be at least checked (looked at). NOTE: if/when removing any brg caps, if they are not numbered or marked, they must be stamped or punch marked so they will be reinstalled in exactly the same position and orientation.... Keep everything in order of removal, do not mix up old parts/positions/orientations.
... If rear main cap (#5) is removed its a good time to change rear main seal.
... Main caps are/should be numbered 1 2 3 4 5 (front-rear).
... Strongly strongly suggest getting/download FSM, or Haynes or Chilton, or other Magnum rebuild book etc.
3. ... At this stage new pump is good idea.
4. ... Do not at all assume pump was seemingly good, and/or brgs either (cannot even assume the new oil press sender was good!!; I hope the earlier suggested oil press test with "reliable/accurate" mech gauge is making more sense now).
... Without compression test, hope all 8 cyls are good too (were blowby pulses ok/equal ish?)
... There's high volume, and/or high pressure pumps (IDK about high mileage pump, if that's what was said).
Yeh!, glad your having a blast; but even for seasoned mech, this is getting into deep and important territory, need to closely PAY ATTN!!!, one mistake anywhere here in the bottom end can destroy the whole motor; need to plan steps before doing anything or taking anything apart (others here have first hand advice with these Magnum bottom ends).
... Pay attn when breaking loose main bolts or rod nuts; anything looser than it should be is an indication of problems, and should be noted!! ... Good luck.
That being said I will retest my blowby when I get the truck back together. I believe all pulses were the same ish minus maybe one. (1) is it true the 8th has problems?
Really quickly when I dropped the crankshaft to change the seal the bolts sort of had a funny smell. Almost burnt. (2) is this a big deal or normal? I believe oil pump smelled this way too.
Changing rear seal while I'm at it because there was oil at the bottom of the transmission bell housing. (3) Read somewhere this is an indicator of a rear seal leak?
(4) what does brgs stand for? When speaking of oil pump.
Crankshaft bolts were noted in orientation and location. Will put back in at 85 lbs per foot. Any other last minute tips?
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