TwinTurbo.NET: Nissan 300ZX forum - I believe for the cometic head gasket to work
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Subject I believe for the cometic head gasket to work
     
Posted by Jim (Selin Design) on January 09, 2011 at 4:13 PM
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In Reply To head gasket opinions from the experts.... posted by puchy on January 09, 2011 at 03:19 PM
     
Message properly you need to lap the heads and block flat after having them decked. Seems like a lot of work given the stock gasket is known to work well. (Such as in Greg Dupree's 9.3 second car, IIRC)

Here a link to a guy on a supra forum discussion lapping and it sounds like he may be renting out the lapping block:
La-Z-Link

Even if you had all the right equipment is may still be a matter of experience and individual skill to get good results. It seems to me if you used improper form lapping you could mess up the flatness.

www.selindesign.net

     
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