Carbon Deposit on used pistons
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Joined: Mar 2002
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From: Rockville, MD
Carbon Deposit on used pistons
I have a set of used JDM TypeR pistons and rods I want to drop into my GSR. They look like this
What should I do to take off the carbon deposit? Is it safe to spray it w/ brake cleaner?
What should I do to take off the carbon deposit? Is it safe to spray it w/ brake cleaner?
Thread Starter
Joined: Mar 2002
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From: Rockville, MD
Re: Carbon Deposit on used pistons (Blaze45)
debur? what is that?<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blaze45 »</TD></TR><TR><TD CLASS="quote">Be sure to debur it while you have em out.
Blaze</TD></TR></TABLE>
Blaze</TD></TR></TABLE>
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From: Riverside, CA, USA
Re: Carbon Deposit on used pistons (DeeSeeToo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DeeSeeToo »</TD></TR><TR><TD CLASS="quote">debur? what is that?</TD></TR></TABLE>
I think he means smoothing down the edges of the top of the piston or thin and portruding metal on the surface. Thin metal at the edge or surface of the piston gets hotter and these hot spots could lead to premature detonation.
This is just my understanding, somebody please verify.
I think he means smoothing down the edges of the top of the piston or thin and portruding metal on the surface. Thin metal at the edge or surface of the piston gets hotter and these hot spots could lead to premature detonation.
This is just my understanding, somebody please verify.
Brrraaaap!
Joined: May 2002
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From: AZ
Re: Carbon Deposit on used pistons (riversideguy)
Sorry that I didnt get back to ya, I was searchin cause there was a DIY post on it and I was trying to find it for ya. I couldnt tho. Basically thats what it is. You get a real fine grit sandpaper and sand down sharp edges that could result in pre ig./deatonation if heated up.
Blaze
Blaze
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From: Bellingham, WA, USA
Re: Carbon Deposit on used pistons (Blaze45)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Blaze45 »</TD></TR><TR><TD CLASS="quote">Sorry that I didnt get back to ya, I was searchin cause there was a DIY post on it and I was trying to find it for ya. I couldnt tho. Basically thats what it is. You get a real fine grit sandpaper and sand down sharp edges that could result in pre ig./deatonation if heated up.
</TD></TR></TABLE>
not to be picky... but those burs could only cause pre-ignition, not detonation..
</TD></TR></TABLE>
not to be picky... but those burs could only cause pre-ignition, not detonation..
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From: Riverside, CA, USA
Re: Carbon Deposit on used pistons (martini)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by martini »</TD></TR><TR><TD CLASS="quote">
not to be picky... but those burs could only cause pre-ignition, not detonation..</TD></TR></TABLE>
I looked it up and yes, pre-ignition and detonation are not the same thing, but pre-ignition can cause or contribute to detonation. Pre-ignition is the igniting of the fuel before the spark plug fires due to hot spots in the engine. Detonation is an erratic combustion with multiple flame fronts colliding to suddenly increase cylinder pressure. This erratic combustion can be caused my a number or combination of things that lead to excessive heat or pressure in the engine resulting in auto-ignition and multiple flame fronts.
not to be picky... but those burs could only cause pre-ignition, not detonation..</TD></TR></TABLE>
I looked it up and yes, pre-ignition and detonation are not the same thing, but pre-ignition can cause or contribute to detonation. Pre-ignition is the igniting of the fuel before the spark plug fires due to hot spots in the engine. Detonation is an erratic combustion with multiple flame fronts colliding to suddenly increase cylinder pressure. This erratic combustion can be caused my a number or combination of things that lead to excessive heat or pressure in the engine resulting in auto-ignition and multiple flame fronts.
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From: Extraordinary Machine
Re: Carbon Deposit on used pistons (riversideguy)
Put some peanut butter on them, bring it over and have my dog lick it, it will look brand new...
Just playin', brake cleaner will do fine as already pointed out! Use a soft %100 cotton cloth to wipe down after they soak for some time...
Just playin', brake cleaner will do fine as already pointed out! Use a soft %100 cotton cloth to wipe down after they soak for some time...
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