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| Registered Join Date: Jul 2001 Location: Suntree, Florida, USA 
					Posts: 2,261
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				Time Lapse Lapping Cylinders
			 
			The 1970 had no head gaskets / flame rings.  So... gotta make sure the sealing surfaces mate properly. This might be a boring video if it wasn't time lapsed!!!  
				__________________ JB - BreitWerks www.breitwerks.com 321-806-8664 Engine Rebuild & Restorations | ||
|  05-13-2015, 06:32 PM | 
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| Under the radar Join Date: May 2007 Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle 
					Posts: 7,129
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			I thought I was the only one to think of doing that.
		 
				__________________ Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage | ||
|  05-13-2015, 08:57 PM | 
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| Try not, Do or Do not | 
			The Mahle cylinder sealing surface is not flat (tapered by design) on cylinders with no gasket/ sealing ring so lapping them is actually counter productive. Interesting idea though. It was done on the 2.0 cylinders but those have an entirely different design. 
				__________________ Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net | ||
|  05-13-2015, 09:59 PM | 
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| Registered Join Date: Jul 2001 Location: Suntree, Florida, USA 
					Posts: 2,261
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			Yeah, I hear ya Henry. But I didn't lap them flat. Just knocked down the high spots that showed with the Prussian blue. Just a little rub a dub dub to get them back in line.
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|  05-13-2015, 10:01 PM | 
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