Large amount of crank end play for '41 lincoln V12

[artwerkshop]

Is 50 thousands of an inch too much? Factory spexs. are .002 to .006 of an inch. IS this motor plane old SHOT ?

[zman]

Way too much,You probably should put in new bearings if you have done so

I'm assuming that the wiper flange is worn, which can be built up and machined,

Zman

[peecher]

Sounds like it's time to pull that engine and take a good look at the crank. That much end play has really played havoc with the rear main and probably the thrust surfaces of the crank. Your crank may indeed be bent causing the thrust surface to not run true. Your engine is not neccessarily "shot" but you should inspect everything while you have it out. How does it run other than the vibration? Oil pressure, lifter clatter,oil consumption etc.

[artwerkshop]

On cyl # 11 there is coolant seeping out and when ck'ing the compression it was "O". I added a bit of marvel mystry oil into it and the compression went back to normal. There is oil seeping from the other cyl head at cyl # 12. Also it does need the distributer points redone, but haven't done so yet. Other than that it does run fairly well with little oil consumtion. The lifters do clatter some, but with the end play that large the oil pressure has got to be lower than normal. I've got the transmission out now and the front u joint bolt was loose and its flange is chewed up some. The trans. mainshaft bearing is noisey, going to replace them. Is it possible to dress out the chewed u joint flange? The joint itself is a bit loose play wise but not excessive. So I'm thinking new u joint, dress the flange flat, new main shaft bearings and seals , both cyl head gaskets,and the crank bearings. Seems like there's no end to this cars troubles. Am I on the correct path?

[no more]

I TRIED A LITTLE OF THIS AND A LITTLE OF THAT SEVERAL TIMES.......I WOULD STRONGLY ADVISE NO FIX UP JOB...ALL OR NOTHING ( IF U PLAN TO DRIVE MORE THAN ON / OFF TRAILER)..

BEARINGS..POSS REBORE / RINGS PISTONS...VALVES W/SOLID GUIDES..CAM BEARINGS ..LIFTER BODIES RESURFACED...LIFTERS OR CONVERT TO ADJUSTABLE...HIGH VOL OILPUMP ETC... IF YOU HAVE THE ORIGINAL CRANK, WITH FREEZE PLUGS IN CRANK THROWS..GET A POSTWAR SYLE CRANK LARGER BEARINGS AND BETTER OILING, USES DIFFERENT FLYWHEEL ..BUT ALL BOLTS IN..INSTEAD OF WELDING UP OLD CRANK....

IF THE CRANK IS THAT WORN ..THEN ALL LUBRICATED PARTS ARE SUSPECT.......I WASTED LOTS OF TIME AND MONEY DOING CRANKS....THEN DOING VALVES ....UNTIL A COMPLETE ...REPAIR IT WASN'T WORTH A DARN...NOW IT ZOOMS ...SMOOTH AND QUIET...I WISH I HAD NOT WASTED ALL THOSE PARTS..TIME AND MONEY ON PARTIAL "FIXES" FOR 20 YEARS

JEFF

LZOC1232

oHIo