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crankcase explosion!! 

 

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 Post subject: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:05 am 
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Ride: turbo ef falcon

Location: canberra
ACT, Australia

Was working on the bosses car and found the injectors to be pumping in a ridiculous amount of fuel.. changed the injectors over and removed all the plugs, did a routine spark check since it still didn't want to fire properly - cranked it twice then all of a sudden this happened...

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:09 am 
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Ride: 98 EL Futura

Power: 199 rwkw

Location: Lilydale
VIC, Australia

wow....

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:17 am 
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Ride: EA Turbo

Location: Melbourne
VIC, Australia

Damn what a waste of a tickford rocker cover :(

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:30 am 
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NSW, Australia

Looks like the sump was fuel of petrol.
An issue old school people keep an eye out for after the amount of times the diaphram used to let go in mechanical fuel pumps and fill the sump with fuel.

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:35 am 
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Yeah there was a ridiculous amount of fuel in the sump, though it was pretty unlucky to have the perfect mixture of vapour under the rocker cover to go off like that! Needless to say, there was an almighty bang and I lost my hearing for a few minutes.. lucky I didn't lose more than that! :roll:

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:44 am 
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Ride: 92 EB s

Location: DORRIGO
NSW, Australia

Holy.
So....
Never seen that before.
Guessing all the killerwasps excaped.
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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:45 am 
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Location: Grafton
NSW, Australia

Thats huge! Lucky indeed bud.

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 12:51 am 
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Location: Bathurst
NSW, Australia

so no video of it then?

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 2:39 am 
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VIC, Australia

:shock:

Never seen that on a modern EFI engine, but i have seen something similar on old school carby & mech fuel pump engines, due to filling the sump with petrol

Cheers

ToranaGuy

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 7:50 am 
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Ride: NL FAIRLANE BA TURBO POWERED

Location: ballarat
VIC, Australia

I was looking through pickles catalogue and saw this and wondering what could have caused this i guess i now know.

 

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 9:47 am 
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QLD, Australia

Wasnt an LPG Car was it? - I noticed the pickles one was.

I got a conversion in sydney from a "reputable" place.. and they didnt relocate the rocker breather intake hose. So the Crank/Rocker Cover filled with a perfect LPG Mixture instead of just fresh air. I was lucky - I saw the problem and fixed it.

Ive seen that mistake on most LPG Conversions on those engines in the aftermarket. I think its just Lazy. The Rocker Breather needs to be blocked at the throttle body (just in front of the butterfly), and relocated to the fresh side of the mixer. Some mixers actually have a fitting for it.

I often see/hear of this happening, and Guys not understanding why. I dare say the EB/D crack was due to too much fuel in the sump as said, but that AU is definetly due to the LPG system

Nigel
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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 10:13 am 
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Location: Mornington Peninsula
VIC, Australia

Yeah i've seen an LPG 4L do the above

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 10:14 am 
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Location: melbourne
VIC, Australia

This happened to Dad's EA a few years ago.

It woke up the neighbourhood.

The engine filled with gas overnight and ignited when he cranked it over.
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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 2:16 pm 
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Ride: EB2 Ghia,Mighty Boy,Eb1 Xr8 5spd

Location: ** In the Shed! **
VIC, Australia

I have seen the odd LPG powered falcon blow up the rocker cover like that, always wondered how it managed to happen, now we know.

Cheers

ToranaGuy

 

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 Post subject: Re: crankcase explosion!!
Posted: Tue Jun 29, 2010 2:33 pm 
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Ride: EF XR8 347

Power: 232 rwkw

Location: Perth
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Makes you wonder why ADR specify a sealed PCV as opposed to an open air one if this s**t can happen...

 

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