Small Block Mopar Lifter Failure

[@regdor8187]

Perhaps you need to rotate the camshaft in your little experiment.....

[@mascotgraphics]

The engine was in the car and running prior to this, there was no oil getting to the top end at all; hence, the teardown. This was the discovery phase, so to speak.

[@Racingpappy101]

I think you have other problems... No way can a engine run and survive with all 16 lifters constantly spraying oil like those 2 modified solid roller lifters. You would flood the top end with oil as you suck the oil pan dry and lose pressure to the bottom end bearings. Each lifter is suppose to get pressurized as the oil hole in lifter moves up and down in the oil passage that feeds each lifter. Looks like passenger side is getting more oil to lifter passage than the driver side. First thing I'd do is to pull the back 2 lifters out on drive side, And run you drill again to prime engine. And Film how much oil is flowing to those back 2 lifter bores as your priming it. It will tell you if theirs a blockage from the front main bearing. Do you know if the 2 small oil galley plugs that's right behind the cam plate was put in? If the plug on driver side was knocked in too far? It may be blocking the oil feed hole coming from the front main bearing that pressurizes the driver side oil passage. Good luck!

[@mascotgraphics]

RE: Looks like passenger side is getting more oil to lifter passage than the driver side. - we had three styles of lifters in the engine at that time (before second teardown) and only one set was the modified set. The problems with this engine were numerous: first build failed: no oil to the heads, but 70 psi (80 with the drill during teardown). The builder forgot to put the plug in behind the filter, so no oil was getting filtered and all the first start up shavings went to the crank and bearings, destroying them. They never primed it, but told me the engine was fine... it wasn't. The rings were damaged, the valve guides were burnt, and the crankshaft was scored and needed polishing. ALL internals were 100% brand new parts, only the block was used. The plugs at the back of the block were put in, these were concerns on the first build, and definitely all plugs were checked for the second build. At the time of this video we had pulled the engine out for a third time, and it to this shop because it was basically toast. This was a test of the flow to the heads, which there was none except for that one pair of modified lifters we installed, that was the first sign of oil actually squirting out the lifters. It went down to bare block, back to the machine shop, and new bearings, seals, guides, lifters, rings, etc. were ordered, and the build was completed. The problem at that point was 35 psi cold, 5 psi hot on oil pressure, with the same pump that was putting out 70 psi cold and 40-50 psi hot at idle. So this basically became a money pit and not worth pursuing.

[@elliottmagnum4998]

You understand that the oil holes have to be lined up right?

[@mascotgraphics]

You understand that I'm not the engine builder, right? Two shops, both have built LA blocks with magnum heads, one provided plenty of oil pressure to the block, but none to the heads, the other provided plenty of oil pretty to the heads, but very little to the block. I lost a big chunk of money on this paperweight.

[@BeatersRus]

seems kinda crazy that you went thru 3 sets and modified the solids to actually work...and now you say you have low oil pressure now that you modded those solids to wash cars,,thats Wayyy too much flow...and is where your oil pressure has gone as far as the non modded lifters......is there a galley plug thats in the wrong place or mia?? in the Block ??

[@mascotgraphics]

The story on the build is this: sent it to a Mopar shop locally, had them run it on their run stand and set the timing for me so I could drop it in with a bran new transmission. It was noisy, and no oil to the heads at all. Checked the plug in the back, it was there, but they left the plug out behind the oil filter. Brought it back to them twice, still no oil to the heads, but pressure was about 70 psi cold, 40 warm at idle. Clearly they never primed and checked for pressure. Engine was literally destroyed, needed new bearings, cylinder walls honed again, crank polished, new valve guides, and new rings. Got my money back, took it to a different Mopar shop, he pulled off the intake and primed it, as seen here, good pressure, but lifters weren't pumping oil. So we tore it all down, block went back to the machine shop, new parts ordered, then he finished it and when I installed it I had 30 psi cold, and 5psi hot, second builder won't return my calls or honor his work, so it's basically just sitting now. I know I'm not the first person to do an LA block with Magnum heads, but for some reason nobody could figure out what was wrong with this one.

[@mickysmith8851]

Mopar la engines don’t lube rockers thru the lifters. Was the magnum headed engine or a regular LA headed engine

[@mascotgraphics]

Yes, I'm aware of that... they're magnum heads...it says that in the first few words of the description, and at the beginning of the video.

[@firebreathinggarage2117]

Excellent video and only 49 subscribers, you have fifty now.

[@mascotgraphics]

Thanks... wish this would have worked, but for some reason nobody could figure it out. Hughes swore it was the Comp lifters, but his didn't work either, and he had nothing to say about it.

[@jeffdiamond3900]

CAM BEARING SPUN?

[@jimmybare3026]

Magnum vs. LA side by side comparison @ Uncle Tony's Garage. Approximately 4 minutes in you will, if you haven't drilled out your oil bosses in the block see the culprit to your oiling issues.

[@shanemayfield4610]

china junk. just use flat tappet cam like I did, no problems