They make them to 75 feet.  I buy my 25 footers there:
http://www.egauges.com/vdo_send.asp?Sender=ISSPRO_Pyrometer_Lead

Tom

--- David Etter <detter@MAIL.AURACOM.COM> wrote:

> This is an attempt to tap into a wider list
> knowledge outside the
> 'Diesel Vanagon' forum....
>
> Question:
>         Is there anyone out there who has installed
> an EGT gauge who
> has concerns about the accuracy of the gauge.
>
>         I ask this because I was reading on one
> man's blog about his
> installation of an EGT Gauge...Quote.."The leadwire
> from the
> thermocouple (it's a special wire, don't cut it to
> lengthen or
> shorten and don't solder the connections)"
> Unquote...
>
> I had excellent feedback (from Diesel-Vanagon) on
> why not to
> cut/extend/solder/screw up the supplied wire
> harness, but no clear
> solution to the problem. I can't believe that of all
> the people who
> have installed these pyrometers that each and every
> one, did the
> 'correct' thing and purchased 'special' wire or
> calibrated the gauge.
>
> Perhaps someone on the list has a source for this
> wire. I bought the
> 'kit' from "eGauges"
>
http://www.egauges.com/vdo_mult.asp?Type=Pyrometer&Series=Vision
> and they don't list longer wire of any length. (24'
> wanted).
>
>         Unless I can find the 'proper' wire, I think
> I will have to
> set up a bench test and actually 'calibrate' the
> gauge using a stable
> heat source set to accurately pinpoint 1000 degrees
> and use that as
> an installed reference point.
>
>                                 David (dsl82westy)
>

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