Jim,
What are the gear ratios and the tire size you have?
With that information, you should be able to do the
calculations and determine for sure. Then, you can
calibrate your speedo based on how many seconds it
takes to get from one mile marker to the next.
If the torque converter is in lock-up mode, then you
can mathematically predict the rpm fairly closely.
I don't know what the ratios are and what size tires
you have. If you supply that info, I'll be happy to
do the math for you.
Regards,
Ben Pender
- Jim Bartley <pei505turbo@yahoo.ca> wrote:
> Anyone have an automatic diesel (wagon I suppose, as
> rear-end gearing might be different in sedans?) with
> a working tachometer, can tell me
> -what the engine is turning over at highway speeds
> (after the lockup, which in my car is about 80
> kph/50 mph as indicated by the "not-sure its
> completely accurate speedo"
> -what the best speed, given standard tires, and
> existing R/E final gear ratio in an 86 automatic
> turbodiesel wagon, that I should be driving it on
> longer trips, mainly for mileage I suppose.
>
> As Bob Bruce pointed out, the pump would shut down
> in overspeed situations; but I don't intend to drive
> it that fast <GGG> I'm just curious what it is
> actually doing.
>
> good news, it doesn't run anywhere near hot no
> matter what, so not an issue.
>
> thanks,
> Jim Bartley on PEI
> 86 505 S Turbodiesel automatic wagon
> 87 505 Turbo gas automatic sedan
>
>
>
>
> Jim Bartley <pei505turbo@yahoo.ca> wrote:
> Been taking the Diesel wagon out for some
> short trips; Rotella T and filter and some fresh
> diesel fuel are making quite a difference. It was a
> mosquito fogger, and bit by bit it is running
> cleaner and better. However, the electrics are a
> mess*. There is a bad ground engine-frame under the
> battery which gets replaced next week, but there is
> a huge list of things to fix.The tachometer which
> was not working at all, is now working erraticly,
> bouncing all over, so still no use.
>
> What is the "sweet spot" for the 86 diesel wagon,
> RPM wise, and what speed is that equivalent to?
> What speed should I limit it to, for best mileage?
> What speed should be my maximum steady speed on a
> good road, lightly loaded?
> It seems quietest/happiest? at a steady 90Kph/55 mph
> 60k/35m = RPM?
> 80k/50m = RPM?
> 90k/55m = RPM?
> 100kph/60 mph = RPM?
> 110kph/65 mph =RPM?
>
> *by electrics, include no cruise, no horn, no
> dashboard lights, no rear windows (or the lockout
> button is shot), weird tail/stop light faults, tach,
> boost (although the turbo itself seems to be
> working) and oil temp not working--although the oil
> level indicator before starting does work.
>
> Jim Bartley on PEI
> 86 505 TurboDiesel Wagon
> 87 505 Turbo (gas) Sedan
>
>
>
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Received on Sat Jun 24 08:12:05 2006
