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crankcase explosion!! 

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 3:44 pm 
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s-tranzor wrote:
Makes you wonder why ADR specify a sealed PCV as opposed to an open air one if this s**t can happen...



Because sealed is better for emissions control and these sort of issues don't occur very often if LPG installs are done correctly....

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 4:07 pm 
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what did the boss think about that? lol
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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 8:52 pm 
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ToranaGuy wrote:
s-tranzor wrote:
Makes you wonder why ADR specify a sealed PCV as opposed to an open air one if this s**t can happen...



Because sealed is better for emissions control and these sort of issues don't occur very often if LPG installs are done correctly....

Cheers

ToranaGuy


If they are done right it can't happen.

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 9:21 pm 
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The boss wasn't pleased when he first saw it! Once I explained what happened he was a lot more lighthearted about it all - probably because I didn't lose my face in the blast :lol:
Seen this kind of thing happen before with LPG but never with petrol and never this big - usually just blown gaskets, PCV and a busted oil cap. Certainly surprised me, I didn't even flinch - I had no idea what was going on until about 5 seconds later once the smoke was clearing and i realised something blew, and then about 15 seconds after that when I could see what had actually happened!

You can hardly see the split in the rocker cover when you pinch it together so he's going to get it welded back together from the inside and hopefully it doesn't deform too much.

And sorry, I didn't have time to whip out the camera and film it hahaha I'll be sure to think ahead next time.

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 10:24 pm 
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Happened to my brothers (lpg) EA a few years ago - but i'm curious - the title suggests the crankcase (i.e. block, sump) exploded - did it, or was it just the rocker cover? Or do you just mean that the fuel pooled in the sump?

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 10:58 pm 
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sorry, title must be a bit misleading.
The fuel vapour from the flooded crankcase rose to the rocker cover and caused the big pop, hence labelling it crankcase explosion.. Now i think about it, should probably inspect the timing cover and sump gasket etc for damage...

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 11:08 am 
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Yeh, thats what I was thinking! My brothers car was never the same after... when you think that the bang was big enough to crack a cast rocker cover, that shock wave can't have done the rest of the engine alot of good. Reminds me of one years ago when I drove cabs, sitting at the airport and a cab somewhere ahead of me was cranking and cranking trying to start, and I assume hitting the primer on his LPG lots... he was about 10 cabs ahead of me and when it went bang in a BIG way my ears were ringing....as were about 30 other drivers - there was no intake manifold to speak of left....bits of it everywhere.

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 1:05 pm 
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tearlejc wrote:
Yeh, thats what I was thinking! My brothers car was never the same after... when you think that the bang was big enough to crack a cast rocker cover, that shock wave can't have done the rest of the engine alot of good. Reminds me of one years ago when I drove cabs, sitting at the airport and a cab somewhere ahead of me was cranking and cranking trying to start, and I assume hitting the primer on his LPG lots... he was about 10 cabs ahead of me and when it went bang in a BIG way my ears were ringing....as were about 30 other drivers - there was no intake manifold to speak of left....bits of it everywhere.


Lol, some people just don't have common sense.

Not just because he's apply a dangerous amount of fuel, but also because if it isn't starting, how does he expect it to when there's nothing but gas in the cylinder..

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 1:29 pm 
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lukey1990 wrote:
tearlejc wrote:
Yeh, thats what I was thinking! My brothers car was never the same after... when you think that the bang was big enough to crack a cast rocker cover, that shock wave can't have done the rest of the engine alot of good. Reminds me of one years ago when I drove cabs, sitting at the airport and a cab somewhere ahead of me was cranking and cranking trying to start, and I assume hitting the primer on his LPG lots... he was about 10 cabs ahead of me and when it went bang in a BIG way my ears were ringing....as were about 30 other drivers - there was no intake manifold to speak of left....bits of it everywhere.


Lol, some people just don't have common sense.

Not just because he's apply a dangerous amount of fuel, but also because if it isn't starting, how does he expect it to when there's nothing but gas in the cylinder..


Yeh, it was one of those occasions where you're thinking `this is going to end badly...' he must have been cranking solid for about 4 - 5 minutes - as I say I was sitting about 10 cabs back, window up cos it was cold, and even then my ears rung - it dented the bonnet from inside as well - this was on an EL Falcon cab...

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 1:49 pm 
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It would have been insane to hear and see that..

Although now a days people would think it was some sort of terrorist event :p

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 2:01 pm 
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Yep, never heard such a loud bang - MUCH louder than gunshots, fireworks etc...they actually had the bonnet up when it happened and there were three other drivers around the engine bay at the time - amazingly, nobody got hurt (other than not being able to hear anything !!)

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 2:25 pm 
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Jesus, someone could have easily lost an eye :shock:

I'm surprised that out of at least four people standing around it no one thought about the consequences..

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 2:29 pm 
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yep, exactly,...

 

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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 2:47 pm 
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presto wrote:

You can hardly see the split in the rocker cover when you pinch it together so he's going to get it welded back together from the inside and hopefully it doesn't deform too much.


thats a stupid idea

spare boxcars rocker covers are a plenty
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 Post subject: Re: crankcase explosion!!
Posted: Wed Jun 30, 2010 6:51 pm 
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FordFairmont wrote:
thats a stupid idea

spare boxcars rocker covers are a plenty


It's a tickford cover and we work next to a very talented welder, so I guess why pay for another one when you can get it fixed for free? Soon find out whether it's any good or not - either way he's not losing anything by having a crack. Pardon the pun :P

 

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