I'm the one who cast aspersions on the electric gauges. But I heard that
from the local MG shop. The context was my buddy's 69 B which had been
non-op since '77. We were trying to fire it up, and the oil pressure started
out around 30, but after we had it running and it got warm, it suddenly
dropped to 0, prompting a shutdown. But it was suggested to him that the
gauge was probably faulty, and they sold him a used, later-type
direct-reading gauge (ulterior motive? you decide). Anyway, the new gauge
showed 25 lbs at idle and 50 at 3000rpm, which seemed more reasonable, given
the known history of the motor..
I don't know why Rick considers ALL the oil pressure gauges useless. Mine
provides what appear to be perfectly reasonable and consistent readings,
with numbers that correspond very well to what one would expect, again given
the known history of the engine.
on 5/1/01 4:21 PM, Bill Schooler at wschooler@home.com wrote:
> Rick Lindsay wrote:
>
> (snip)
>
>> On our MG cars, I consider the oil pressure gauge to be an
>> idiot light with numbers written on it. For me, it tells me if
>> there is 'some' oil pressure, on average. The electric >gauge is a
> thermal device.
>
> (snip)
>
>> --
>> Rick Lindsay
>> Diamond Geoscience Research
>> 5727 S. Lewis Ave., Tulsa, OK
>> Voice: +1 918-747-3456
>> Fax: +1 918-747-8599
>
> Uh, Rick, you wanna explain that a little more? On the MGs I've seen with
> the electric oil pressure gauges, including mine which always responds very,
> very quickly when I start the car, an oil pressure line runs from the block
> to a transducer, which has an electrical connection to the gauge. I can't
> seem to find a thermal link in the setup anywhere. I've never experienced a
> lick of trouble with the electric gauge and I would offer a second opinion
> as to why they were replaced with the old direct pressure reading version
> (and I do mean OLD) - I'll bet a few bucks that it was a cheaper way to go.
>
> Bill
> (Who grew up in Tulsa, about 4 miles from where you live)
>
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the red one with the silver bootlid.
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