What Would Cause This Then?

[Fox 3]

This happened to a mates car, was a good engine, fitted and covered 14 miles, then decided to throw a con rod clean out the block!

 

 

 

You can see straight through! It was actually still running, only on three cylinders though!

[Sandy 191]

That really is properly out isn't it!

[Fox 3]

Yeah, it was just sat there! Hanging on!

[JayCC 0]

Ouch! Unlucky, must be gutting after only just re-building the engine.

[Mark205 1]

Where does that pipe go, the one that is connected right next to where the oil filter screws on?

 

Bad luck BTW, i agree it must be gutting.

Edited March 1, 2009 by Mark205

[aCe 0]

Is that number 4 cylinder? Mine threw number 1 so least its not a common rod problem.

 

I think mine threw due to oil starvation or blocked galleries.

 

Had you just rebuit it? If so i'm guessing someone left something loose

[PaulJLLD 0]

Its just one of the things realy, There is a number of thing that might of caused it. Bad luck though.

[Guest addi-pusjo]

Is that number 4 cylinder? Mine threw number 1 so least its not a common rod problem.

 

I think mine threw due to oil starvation or blocked galleries.

 

Had you just rebuit it? If so i'm guessing someone left something loose

 

something loose that makes sense

[pee vee 1]

new build?? possible that it spun a bearing??

Edited March 1, 2009 by pee vee

[Cameron 16]

Good work!

 

As for what caused it, it could be any number of things. I remember there was a bloke a few months ago who had rebuilt his engine but put a big-end cap on the wrong way round and it threw the rod out.

[petert 587]

Lucky it didn't go through the alternator and cause an electrical problem!

[Pob 1]

Lucky it didn't go through the alternator and cause an electrical problem!

 

Did the rod snap or the bolts snap? As for putting the caps the wrong way round, I thought this would be noticable as turning the crank would be hard work. A friend of mine did this and it made turning the engine over extremely hard.

 

It could of been worse... I've seen rods go through bonnets, radiators and alternators.

 

Dan

Edited March 2, 2009 by Pob

[Fox 3]

It wasn't a new bottom end, just been painted.

 

It was fine in the old car, just wondering why it happened after being swapped? Nothing was touched bar the head gasket swap

 

Luckily the head and valves are all fine, no visable damage anyway, which is nice!

Edited March 2, 2009 by Fox

[richsmells 2]

Maybe some crap or other debris became dislodged or got into a cylinder during the swap and blocked an oil gallery?

 

Good effort!

Edited March 2, 2009 by richsmells

[Cameron 16]

Could just be really really bad luck and it just chose to let go when it did.

 

Did the rod snap or the bolts snap?

 

Its pretty rare that rods themselves snap due to them being forged, they just bend. The rod bolts are far more stressed so they will be the first thing to let go.