TwinTurbo.NET: Nissan 300ZX forum - Two reasons they are important for the VG's
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Subject Two reasons they are important for the VG's
     
Posted by ZXoltan on November 08, 2013 at 9:54 PM
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In Reply To Is itsn't that I wont use them... posted by KongZTT GT28RS MD on November 08, 2013 at 05:28 PM
     
Message 1) The cylinder walls are very thin

2) The proximity of head bolts to the cylinder make the cylinders very prone to distortion when heads are installed


The more meat you take out of the cylinders the more likely you are going to get distortion.

Also, the design of the pistons and the rings comes into play. I'm not familiar with the specifics but I know certain designs are more forgiving in that they conform to cylinder distortion better than others.

     
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