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Browsing this Thread:   2 Anonymous Users



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datsmokin
a12 engine troubles
#1
Home away from home
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2007/1/1 21:50
From Toowoomba, Australia
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well i done some damage to my engine this arvo i put a 350 holley on it and it was running heaps better took it for a drive all of a sudden it died in power then stoped. Parked it in the shed got it started and No. 2 cyl wasnt firing and smoke was coming out of tappet cover breather ive put it down to melted piston broken rings or a head gasket. doesnt seam to be running lean and it only running 3-4 psi
can any one help with a daiganosis before i go tearing it down


Posted on: 2008/6/15 9:58
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revhead001
Re: a12 engine troubles
#2
No life (a.k.a. DattoMaster)
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2008/3/15 3:30
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Wet and Dry comp test should give you an idea if it is a piston or excessive carbon deposits on the valve, blown head gasket etc. First comp test dry. Second test put a few squirts of oil in the affected cyl with an oil can. If comp raises with the wet test then it is a bottom end (ring) problem.

Posted on: 2008/6/15 10:29
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1200wag
Re: a12 engine troubles
#3
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Isn't a 350 holley a little bit of overkill on an A12 ? Just curious...

Posted on: 2008/6/15 10:49
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datto1000wagon
Re: a12 engine troubles
#4
No life (a.k.a. DattoMaster)
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pretty sure its turbo and you can jet the carby down to suit the motor.....

Posted on: 2008/6/15 11:07
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datsmokin
Re: a12 engine troubles
#5
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took the head off and found that iv done the rings in the No. 2 & 3 will post some pic aswell so now it time for a rebuild. other than that the engines in good nick also found out that the head was a high comp one to and about the 350 been to big the engine is turboed so not really and it goes much harder than it did with the stock carby and a webber

Posted on: 2008/6/15 12:39
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The substitute for cubic inches is forced induction....

wanted fender mounted mirrors 4 120y
& 120y hubcaps

120y 2dr every day driver
120y 2dr project
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datsmokin
Re: a12 engine troubles
#6
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some picsOpen in new window
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http://i297.photobucket.com/albums/mm210/sic120y/turbo020.jpg[/img]]Open in new window

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Posted on: 2008/6/15 12:57
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The substitute for cubic inches is forced induction....

wanted fender mounted mirrors 4 120y
& 120y hubcaps

120y 2dr every day driver
120y 2dr project
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Tez
Re: a12 engine troubles
#7
Not too shy to talk
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2008/4/3 23:43
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Open in new window

Posted on: 2008/6/16 0:54
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Dodgeman
Re: a12 engine troubles
#8
No life (a.k.a. DattoMaster)
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2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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Quote:

datsmokin wrote:
also found out that the head was a high comp one to
What did you see that makes you think that the head is a "high comp one"
To be honest, it looks completely standard to me.

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Posted on: 2008/6/16 3:57
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1200wag
Re: a12 engine troubles
#9
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Didn't realise she was running a turbo...

Posted on: 2008/6/16 4:36
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Tez
Re: a12 engine troubles
#10
Not too shy to talk
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2008/4/3 23:43
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I'd weld up that water port while ya got the head off, she's getting close to #4

Posted on: 2008/6/16 5:14
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