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EarlyBay Forums
Technical
Compression Readings and Oil Pressure For New Engine
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<blockquote data-quote="atafonso" data-source="post: 603784" data-attributes="member: 23592"><p>What cam do you have? 8.6:1 with a stock cam will be too much and will run really hot and detonate. For a W110 is perfect.</p><p></p><p>Compression should be measured with the engine hot.</p><p></p><p>Are the barrels/pistons/rings new? The rings will have to run in to get properly seated first, then you can measure the compression for a more accurate measurement.</p><p></p><p>What oil you using? The rule of thumb is no less than 10psi per 1k rpm hot with 30 weight. You should expect more in a new engine at idle. </p><p></p><p>Abel</p></blockquote><p></p>
[QUOTE="atafonso, post: 603784, member: 23592"] What cam do you have? 8.6:1 with a stock cam will be too much and will run really hot and detonate. For a W110 is perfect. Compression should be measured with the engine hot. Are the barrels/pistons/rings new? The rings will have to run in to get properly seated first, then you can measure the compression for a more accurate measurement. What oil you using? The rule of thumb is no less than 10psi per 1k rpm hot with 30 weight. You should expect more in a new engine at idle. Abel [/QUOTE]
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Technical
Compression Readings and Oil Pressure For New Engine
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