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Re: 356 CI Compression Ratio
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Home away from home
 
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I've little doubt the heat riser valve has been stuck in the past. If my suspicion that the original head has been planed based on the volume measurements that would support a story that the head gasket failed and was replaced sometime in the past -- perhaps the head was found to be warped or eroded. The valve lifters are hydraulic on the 356.
BTW, I did measure the 327 head prior to installation with machinists straightedge and feeler gauge, measuring up to 3 thou in the center from the ends, which is the limit. Quote:
Posted on: 7/31 15:25
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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Re: 356 CI Compression Ratio
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Home away from home
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A warped or bent head should pull down flat quite easily and even very slight imperfections will be sealed when using a proper head gasket and Copper-Coat or some other similar sealant. Planing should be done only in extreme cases.
Posted on: 7/31 16:08
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Re: 356 CI Compression Ratio
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Home away from home
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Some people do it to raise compression too. My Custom had a distinctive racing stripe when I bought it that had been applied by someone sometime prior to the early 60's. Maybe the head was planed, but the 327 head still had a slightly smaller combustion chamber so I used it. I did use the copper spray sealant.
 Quote:
Posted on: 8/4 12:25
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1942 Clipper Club Sedan
1948 Custom Touring Sedan (22nd Series) 1955 Patrician Sedan 1955 400 Sedan |
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