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Author Topic: What should my piston crowns look like  (Read 644 times)

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Bumbazor

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What should my piston crowns look like
« on: 22 February 2010, 19:17:08 »
So far I have only seen them through the spark plug holes, in an effort to determine if they have residue of coolant deposited upon them.

I couldn't see any signs of moisture on any of them and all looked very much the same, although I did notice they seem to have what I can only describe as a rough, almost like having been sandblasted, surface. Is that right?
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To do: Replace brake discs and pads; adjust already replaced shoes; check for leaks in oil cooler, cambelt area, crank seals, sump, dipstick; replace osf door; replace a tyre; clean, MOT.

ViaraiX

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Re: What should my piston crowns look like
« Reply #1 on: 22 February 2010, 19:22:57 »
Thats most likely just carbon deposits and general crap.

When I took the head of other halfs hyundai they were black and as you described, bit of fine grade wet & dry and some WD40 brings them up a treat.
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Clouseau

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Re: What should my piston crowns look like
« Reply #2 on: 22 February 2010, 20:55:12 »
My X20XEV block at 85K

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