| has overheated or not. The plastic they are coated with plastic that melts at about the same temps that cause heads to warp up to the point that a headgasket blows as well as other problems like lose of ring tension and oil thinning to the point you see bearing damage.
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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