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Technical
Compression Readings and Oil Pressure For New Engine
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<blockquote data-quote="mike.s" data-source="post: 603791" data-attributes="member: 13548"><p>Yes - engine isn`t in the van yet - hopefully get it in on friday and drive it out to seat the rings in. I`ll measure the compression again once thats done and when the engine is hot.</p><p></p><p>That 25 psi at idle was when the engine is cold - will get a better reading once the the engine is hot. Obviously it will drop when the engine is hot, but i was wondering if it should be a little higher when cold at idle.</p><p></p><p>Oil is SAE 30 golden film stuff.</p><p></p><p>Engine specs is - </p><p>1914cc 94mm barrels</p><p>stock crank</p><p>stock cam</p><p>1.4 rockers</p><p>stock heads ported and polished with 3 angle job </p><p>complete crank assembly balanced</p><p>compression set to about 8.6</p><p>dell 40s with 32 vents</p><p>4-1 exhaust</p><p>stock complete tinware</p><p>123 ignition dizzy</p><p>addtional ext oil cooler on thermostat</p><p></p><p>How come it will run hot with the stock cam then? I ran a 1641 in a van 2-3 years with the same sort of spec as above but with 9:1 and it ran cool as a cucumber - no external oil cooler either there.</p><p></p><p>Thanks, Mike</p></blockquote><p></p>
[QUOTE="mike.s, post: 603791, member: 13548"] Yes - engine isn`t in the van yet - hopefully get it in on friday and drive it out to seat the rings in. I`ll measure the compression again once thats done and when the engine is hot. That 25 psi at idle was when the engine is cold - will get a better reading once the the engine is hot. Obviously it will drop when the engine is hot, but i was wondering if it should be a little higher when cold at idle. Oil is SAE 30 golden film stuff. Engine specs is - 1914cc 94mm barrels stock crank stock cam 1.4 rockers stock heads ported and polished with 3 angle job complete crank assembly balanced compression set to about 8.6 dell 40s with 32 vents 4-1 exhaust stock complete tinware 123 ignition dizzy addtional ext oil cooler on thermostat How come it will run hot with the stock cam then? I ran a 1641 in a van 2-3 years with the same sort of spec as above but with 9:1 and it ran cool as a cucumber - no external oil cooler either there. Thanks, Mike [/QUOTE]
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Compression Readings and Oil Pressure For New Engine
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