BOOM how to destroy an engine!!

[tommy t4]

Well the mechanic before if that's what you can call him, dropped what looks like the turbo return pipe o ring in the sump which in turn got sucked up into the oil pick up and bobs ya uncle. Con rod bent and piston cut into 7 bits, only part left un destroyed was gudgeon pin.

[ma70]

Holy flux! that the engine you just got fitted? (the "mystery" one from the other day)

Bummer if it is... How did it end up spitting a piston, jammed the pressure relief valve open resulting in a seizure?

[tommy t4]

Originally Posted by ma70

Holy flux! that the engine you just got fitted? (the "mystery" one from the other day)

Bummer if it is... How did it end up spitting a piston, jammed the pressure relief valve open resulting in a seizure?

Heat seizure I'm guessing as the con rod was blue and the pickup was jammed, only way you can really bend con rods thru heat. This was the reason why I put in the b4194t2 because the ****ty b4204t5 engines are the worst invention ever.

[ma70]

Oof, not nice (you can also bend rods by spitting a big end cap & smacking the end of the rod with the crank web on the way back round... Ask me, I owned a TS Alfa! )

[happy diver]

The idea is to live in an invisible roofless concrete block built into a cliff.
With no doors for knocking and no windows for peeping and a cavernous
tunnel to the ocean for food and mermaids or men.

Perhaps a deserted island with Wilson is simpler.

[tommy t4]

Originally Posted by ma70

Oof, not nice (you can also bend rods by spitting a big end cap & smacking the end of the rod with the crank web on the way back round... Ask me, I owned a TS Alfa! )

And how would you split the end cap then? Over tighten the bolts or heat!!

[ma70]

Originally Posted by tommy t4

And how would you split the end cap then? Over tighten the bolts or heat!!

No, the previous owner had driven it with the famous Alfa knock until it broke (through fatigue) the bolts! Unbelievable, it must have had next to no oil pressure & the bearing must have been spinning like a top!

I bought it with the blown engine with the intention of replacing the sump/crank/rods etc but it turned out to have also smacked up the liner so I broke the car instead Awfully weak engines bottom end wise though, and the cranks won't take a grind either...

[tommy t4]

Pic....

[skyship007]

Originally Posted by tommy t4

Well the mechanic before if that's what you can call him, dropped what looks like the turbo return pipe o ring in the sump which in turn got sucked up into the oil pick up and bobs ya uncle. Con rod bent and piston cut into 7 bits, only part left un destroyed was gudgeon pin.

Umm, Errr (Need better high def pictures to tell for sure), it's very unlikely that your description of the bu----- main block failure path is correct and I do know my Ar-- from my El--- about blown or forked up engines.

The oil feed has a rather fine screen, so most O rings that fall into the sump don't cause trouble. BUT I have investigated a few multiple small O ring debris failures.

Not sure exactly (Busy shooting Germans again), BUT it is more likely that the damage was caused by a low oil level, sudden serious oil leak under power, very thin oil, very old oil, wrong oil filter, long term use of supermarket engine oil, etc, etc (A tad busy at present).

Now on a mission for God (Might be to God if it's as dangerous as the GrowMO tour of MisseryMO State USA).

JOHNNY English, the ultimate government tax collector!

PS: I lost my copy of the BBC 2 Cloud Lab stick.

[tommy t4]

Originally Posted by skyship007

Umm, Errr (Need better high def pictures to tell for sure), it's very unlikely that your description of the bu----- main block failure path is correct and I do know my Ar-- from my El--- about blown or forked up engines.

The oil feed has a rather fine screen, so most O rings that fall into the sump don't cause trouble. BUT I have investigated a few multiple small O ring debris failures.

Not sure exactly (Busy shooting Germans again), BUT it is more likely that the damage was caused by a low oil level, sudden serious oil leak under power, very thin oil, very old oil, wrong oil filter, long term use of supermarket engine oil, etc, etc (A tad busy at present).

Now on a mission for God (Might be to God if it's as dangerous as the GrowMO tour of MisseryMO State USA).

JOHNNY English, the ultimate government tax collector!

PS: I lost my copy of the BBC 2 Cloud Lab stick.

Skyship I have rebuilding and building engines for the best part of 15yrs, when I say it's caused by lack of oil due to the pick up being blocked then thats what it is, seen the same damage thru engines with pick up blocked. Not that I need to explain my reasoning!