austinado16

Thought you guys would enjoy pictures of the damage cause by detonation, in the '93 Eurovan I'm working on. The heavily damaged piston is No.4 and the rest of the pistons look like the other piston I've shown. Looking down into the bores at the other pistons, the sides above the top ring were so erroded, you could actually see the top ring.
<img src="http://i187.photobucket.com/albums/x242/austinado16/P1040084.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/Piston4damagehighsideemail.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/Piston4damagelowsideemail.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/Pistondamagehighsideemail.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/Cylinderheaddamageemail.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/Headerrosionemail.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/ExhaustManifoldlowercrackemail.jpg">
<img src="http://i187.photobucket.com/albums/x242/austinado16/ExhaustManifolduppercrackemail.jpg">

cgt83

HOLY ***T, btw those are identical to the ones i have with the bowl shape

Black Vengeance

Destroyed 2 lands, broke the secondary ring in half, melted the oil scraper to the piston, pitted the hell out of the head, <i>and</i> cracked the manifold??!? It scares me just looking at it.

zaphael666~86CGT~

that REALLY sucks man, what happened?

Joey

austinado16

So it's all a guess at this point, but the head had very recently been off and the timing and serp belts were new, as were the plugs/cap/rotor/air filter.

My guess would be that someone did a timing belt job, got the cam timing off and then driving it around too advanced just started eating anything aluminum.