| Usually nothing wrong with rebuilding an engine that has run a little bit hot as long as everything is remachined block and heads are decked, etc. Doesn't look like yours got really hot as often times we find all the plastic from the knock sensor melted off and in a hardened pool below in the valley.
Russell Floyd Z1 Motorsports www.300zx.com 1990+ Nissan Z specialists Used Parts, New parts, Service/Repair and Performance Z1 Motorsports Exclusive Parts Line 2877 Carrollton Villa Rica Hwy Carrollton, Ga 30116 770-838-7777 770-832-9253 (fax) 
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