Pyrometer safe temps

[Gregory OConnor]

Jay, exhaust back pressure may have something to do with it. The
other thing is gauge accuracy and probe/sender location. I think you
gotta get on the fuel prior to a load to spin the turbo finns. the
3208 can crank at 2800 R and the DD are maxed near 2,000. I never
get hotter than 750 on my 8v92. may be fatal to drive a dd like a
cat.

Wont hurt to use a Raytec on a lower idle reading then after a hill
climb with someone reading the gauge inside (will cool as you walk 40
feet back). Dont forget to check the Raytec for accuracy. I take an
oral 98.6 reading, you may find other methods more familiar.

HugoC
94ptRomolandCa
--- In WanderlodgeForum@yahoogroups.com, "Jay Darst"
wrote:
>
> Brother Dan left Huntley, IL (1 hour west of Chicago) headed for
> Maob, UT.
>
> Was on the phone with him as he is traveling thru some hills in
> central IA this morning.
>
> Had a question regarding pyrometer temps. As he crests the bigger
> hills, the pyromter reaches 1,000 degrees. One hill it reached
1,050
> degrees as he made the summit. Interestingly, he was able to
> maintain 55 mph in high gear at the crest. The aneroid valve has
> been adjusted to provide good fuel volume with only light smoke on
> hard pulls.
>
> Is 1,050 for 10-20 seconds too hot?
>
> While off the throttle down the hill, the pyrometer drops to 700
> degrees quickly.
>
> On my PT w/6V92, the pyro never reaches 900 degrees. Wonder if I am
> not getting enough fuel to make it work hard enough to get the temp
> up there?
>
> All comments welcome (except some of the smart ass ones we've had
> more lately)
>
> Thanks
> Jay Darst
> 85PT40
> Springfield, IL sitting at home, traveling vicariously thru my
> brother Dan and his wife Barb who are attending a Land Rover off-
> road event in Moab, UT.
>