Ignition retard knock sensor.

[Daniel Houlton]

Bruce Plecan wrote:
> 
> EGT is critical for the novice, and pro alike.   It tells you where our
> playing in relationship to the thermal limits of your engine.

Well then, it sounds like I should make that and an oil temp gauge 
a high priority before any extended trips.

> 
> Water cooled cartridge for the turbo has little inpact on the oil temp
> feeding the engine bearings....  Cooling the cartirdge is to min oil coking
> in the turbo.

The way I thought it worked was that the oil was over heated by the turbo.
A water cooled cartridge cools the cartridge and prevents excessive heat
from transferring to the oil.  Is this not true or is it just the case
that it reduces the heat transfer to the oil, but not necessarilly enough
to not worry about it?

> 
> Buzz words turbo overheating, you can percolate oil til it easily losses it
> ability to lubricate bearings!.

Would excessively dirty oil after relatively few miles (about 1400) be an
indication of overheating the oil?  I attributed the dirtyness to excessive
blowby from running boost continuously for such a long period of time on a
high mileage engine (it's got about 100,000 on the clock).  It only happened
during the trip.  Prior oil changes (only one at about 2600 miles) with the 
turbo looked normal.

> 
> | Perhaps though, now that I know I will be running extended boost when
> | loaded down that I should get one to know what's going on and install
> | an oil cooler if necessary?
> 
> Measure the temp., and see where you are.  Get a temp., and call Earls' or
> someone to get a rough idea of what you need.  Why bother putting one on if
> it's not sized right.

Good point.


--Dan
houlster at inficad.com
http://www.inficad.com/~houlster/amigo.htm