Engine cleaning
08-22-2001, 01:57 AM
#1
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Engine cleaning
I'm doing a Head rebuild on Saturday, and I am probably going to need to de-coke the top of the pistons / valves etc. Does anyone have any good recommendations on how to do this?
Also, I am going to have to drain the cooling system, Does anyone have any good tips on what to look for on antifreeze containers to know that it's good for the ally.
Also, I am going to have to drain the cooling system, Does anyone have any good tips on what to look for on antifreeze containers to know that it's good for the ally.
08-22-2001, 05:19 PM
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I use Prestone phosphate-free antifreeze, and I've had excellent results. Of course, with the hoses that keep bursting under pressure on my car (twice now) - the system gets purged and re-filled way too often. 
As for cleaning the tops of the pistons, you might not find that much carbon on them when you pull the head. Even after 87K of poorly-maintained miles prior to the rebuild, my engine's piston tops were very clean.
If you DO clean them, make sure you use aluminum-safe cleaning solution. Test it on the shiny-side of aluminum foil first if you're not sure, as that will show the bad reaction very quickly if it's incompatible. Stay away from abrasive cleaning methods (scrapers, steel wool, etc).
Greg
As for cleaning the tops of the pistons, you might not find that much carbon on them when you pull the head. Even after 87K of poorly-maintained miles prior to the rebuild, my engine's piston tops were very clean.
If you DO clean them, make sure you use aluminum-safe cleaning solution. Test it on the shiny-side of aluminum foil first if you're not sure, as that will show the bad reaction very quickly if it's incompatible. Stay away from abrasive cleaning methods (scrapers, steel wool, etc).
Greg
08-22-2001, 06:44 PM
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Tabor - this is off subject, but how did you manage to hold on to/get "porsche" in your homepage URL. I was under the impression that PCNA shut down everything due to the intellectual property standards. I was checking your profile and noticed. Just curious, as even Porschelist was forced to change.
08-22-2001, 07:01 PM
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Originally posted by Longtime76:
<STRONG>Tabor - this is off subject, but how did you manage to hold on to/get "porsche" in your homepage URL. I was under the impression that PCNA shut down everything due to the intellectual property standards. I was checking your profile and noticed. Just curious, as even Porschelist was forced to change.</STRONG>
<STRONG>Tabor - this is off subject, but how did you manage to hold on to/get "porsche" in your homepage URL. I was under the impression that PCNA shut down everything due to the intellectual property standards. I was checking your profile and noticed. Just curious, as even Porschelist was forced to change.</STRONG>
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08-22-2001, 07:02 PM
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Originally posted by porker:
<STRONG>What for? to pay for all of the parts you need????????? LOL</STRONG>
<STRONG>What for? to pay for all of the parts you need????????? LOL</STRONG>