[Spridgets] Optimum 1275 Engine Temperature

[WeslakeMonza1330 at aol.com]

Interesting.
 
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?
 
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!
 
Other info that I need, is to convert F to C so:
 
190F = 88C Oil temp
 
175-205F = 79-96C Coolant temp - 
 
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.
 
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.
 
 
In a message dated 13/06/2017 21:14:19 GMT Daylight Time,  
billyzoom at billyzoom.com writes:


For power or for  economy?

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?

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/spridgets/attachments/20170614/1d3b8edb/attachment.html>