<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>The power figure needs to be corrected horsepower. Brake specific fuel consumption around .45 is a happy tuning place for my engine.<br><br>Ron Soave</div><div><br>On Jun 14, 2017, at 2:56 PM, WeslakeMonza1330--- via Spridgets <<a href="mailto:spridgets@autox.team.net">spridgets@autox.team.net</a>> wrote:<br><br></div><blockquote type="cite"><div>
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<div>Interesting.</div>
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<div>Main bearing wear is greatest on start up as no hydrodynamic oil film has
been established, and to a lesser extend on the other rod bearings. I'm
not sure about piston ring and bore wear but guess that's were the 90% wear
takes place until the engine is warmed up because everything is tighter?</div>
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<div>At race mechanics school they might teach that 90% of ring and
bore wear occurs when driving through a gravel trap or someone else's
gravel trap excursion generated dust without an air filter. Or maybe they
don't teach that!</div>
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<div>Other info that I need, is to convert F to C so:</div>
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<div>190F = 88C Oil temp</div>
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<div>175-205F = 79-96C Coolant temp - </div>
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<div>The thing with temp readings is that they vary with where you take them
from. The water (actually water + antifreeze) temp in the Pierce head on
my car is way hotter than the water temp reading I see in the rad.</div>
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<div>The other thing is how much the power figure varies with air temp - I'm
guessing the richer the mixture (up to full race strength's) the less the power
drop is with warmer air. I'd like an air temp sensor in the engine
bay.</div>
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<div>In a message dated 13/06/2017 21:14:19 GMT Daylight Time,
<a href="mailto:billyzoom@billyzoom.com">billyzoom@billyzoom.com</a> writes:</div>
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<blockquote type="cite"><span style="FONT-SIZE: small; FONT-FAMILY: Arial">For power or for
economy?</span></blockquote><br>
<div>How about for longevity? In mechanic’s school, we were always taught that
90% of engine wear occurred during warmup, and that the thermostat was there
to reduce warmup time. They also taught us that running hotter wasn’t a
problem as long as the coolant didn’t boil. Were our textbooks
incorrect?</div></font></blockquote></div></font></div></blockquote><blockquote type="cite"><div><span>------------------------</span><br><span></span><br><span><a href="mailto:spridgets@autox.team.net">spridgets@autox.team.net</a></span><br><span></span><br><span>Donate: <a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a></span><br><span>Suggested annual donation: $12.75</span><br><span></span><br><span>Archive: <a href="http://www.team.net/archive">http://www.team.net/archive</a></span><br><span>Forums: <a href="http://www.team.net/forums">http://www.team.net/forums</a></span><br><span>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/spridgets/soavero@yahoo.com">http://autox.team.net/mailman/options/spridgets/soavero@yahoo.com</a></span><br></div></blockquote></body></html>