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whats the clean spots from? 

 

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 Post subject: whats the clean spots from?
Posted: Fri Jul 13, 2012 3:46 pm 
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after pulling the head off the ed after it stopped some of the pistons have clean spots, any ideas?

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 Post subject: Re: whats the clean spots from?
Posted: Fri Jul 13, 2012 4:26 pm 
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usually from water entering the combustion chamber..... although my old ed engine was clean around the whole outer edge of the pistons but mine was burning huge amounts of oil..
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 Post subject: Re: whats the clean spots from?
Posted: Fri Jul 13, 2012 7:46 pm 
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Yeh Id agree. I reckon its from water, washing (turning to steam) the piston crowns clean. Was it missing ?.. Regards Darren.
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 Post subject: Re: whats the clean spots from?
Posted: Fri Jul 13, 2012 8:10 pm 
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How many kms does your engine have? My 370,000km and 270,000km engines were both alot cleaner than that.

Might want to run some Nulon upper engine cleaner through it once its going again..

Apologies for the random comment.

 

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1996 EF Futura factory manual
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 Post subject: Re: whats the clean spots from?
Posted: Fri Jul 13, 2012 11:44 pm 
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Looking at the pots you have worse troubles then clean spots.
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 Post subject: Re: whats the clean spots from?
Posted: Sat Jul 14, 2012 12:43 am 
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Yeah the motors knackered. The aux gear has gone

 

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94 White ED Wagon
eaton M112 supercharger, lowered a tad, extractors, 2.5" exhaust, T5 , custom SureCam supercharger cam, 3.45 lokka, 2 piece tailshaft, poyair bags in the back, TSS front Skirt, Sprint skirts, XR wagon spoiler.
soon to get: AU diff, upc 330mm brakes, Vapor LPG injection.

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 Post subject: Re: whats the clean spots from?
Posted: Sat Jul 14, 2012 2:09 am 
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Pakrat wrote:
Looking at the pots you have worse troubles then clean spots.

Thats what I thought.

 

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 Post subject: Re: whats the clean spots from?
Posted: Sat Jul 14, 2012 3:06 pm 
Getting Side Ways
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Here's a pic of some clean pistons........ 8-)

 

 

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IMGP0732_resize.JPG [ 139.29 KiB | Viewed 35 times ]

 

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 Post subject: Re: whats the clean spots from?
Posted: Sat Jul 14, 2012 4:29 pm 
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cjh wrote:
Here's a pic of some clean pistons........ 8-)

Thats one shiny heater pipe :shock:

 

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1996 EF Futura factory manual
Fully rebuilt engine,Decked, Honed, Bored, Tolerences spot on, Wade 1673, Extractors, 2.5" zorst, 3" CAI, High flow filter, Exedy sports tuff clutch, Chiptorque tune.
Future Mods: A mortgage...

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 Post subject: Re: whats the clean spots from?
Posted: Sat Jul 14, 2012 4:38 pm 
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EFFUTURA4.05SP wrote:
cjh wrote:
Here's a pic of some clean pistons........ 8-)

Thats one shiny heater pipe :shock:


and it currently doesn't leak, either........ :mrgreen:

 

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 Post subject: Re: whats the clean spots from?
Posted: Sat Jul 14, 2012 6:53 pm 
Getting Side Ways
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cjh wrote:
EFFUTURA4.05SP wrote:
cjh wrote:
Here's a pic of some clean pistons........ 8-)

Thats one shiny heater pipe :shock:


and it currently doesn't leak, either........ :mrgreen:


Is it just a polished factory one? Looks good.

 

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1996 EF Futura factory manual
Fully rebuilt engine,Decked, Honed, Bored, Tolerences spot on, Wade 1673, Extractors, 2.5" zorst, 3" CAI, High flow filter, Exedy sports tuff clutch, Chiptorque tune.
Future Mods: A mortgage...

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 Post subject: Re: whats the clean spots from?
Posted: Tue Jul 17, 2012 10:28 am 
Getting Side Ways
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Ride: 93 ED sedan

Power: 161 rwkw

Location: Rockhampton
QLD, Australia

EFFUTURA4.05SP wrote:
cjh wrote:
EFFUTURA4.05SP wrote:
cjh wrote:
Here's a pic of some clean pistons........ 8-)

Thats one shiny heater pipe :shock:


and it currently doesn't leak, either........ :mrgreen:


Is it just a polished factory one? Looks good.


No, it's just paint. When I do cyl head gasket jobs, I clean and paint the engine blocks again, makes the job more presentable, and gives a new clean surface to look at if it should fail again, makes it easier to see.

 

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