From: Dick (rertman@ix.netcom.com)
Date: Sun Oct 03 2004 - 14:46:48 PDT
Jim, I think you have it backwards. The exhaust gases cool about 300
degrees as they give up energy (heat) to the turbine side of the
turbocharger.
Therefore, 1200 at the turbine inlet would be about 900 after the turbine.
Also, the temp after the turbine will vary quite a bit, depending on
throttle position, ambient air pressure/temp, humidity, etc.
IMHO, it's still best to install the sensor in the exhaust manifold as close
as possible to the turbine inlet.
Dick
----- Original Message -----
From: "James Shanks" <n1vbn@arrl.net>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: 03 October, 2004 10:47
Subject: Re: [MV] M35 Turbo upgrade: Thermocouple and Pressure Gauge
> The thermocouple for the Pyrometer must be installed in one of two
> places only. Either just before all the exhaust gases enter the turbo or
> just after the gases exit the turbo. Any other location will give you
> incorrect readings that are useless to you. The Plug you referred to is on
> the exhaust manifold for ONE cylinder only and is a clean out plug to be
> used for that purpose only.When I go to work tomorrow I will take some
> pictures of what a proper after the turbo installation looks like and send
> them to interested parties.
>
> Limits for Pyrometer on the Multifuel engine are 900 Degrees F
> mounted before the turbo and 1200 degrees F mounted after the turbo.
> Operate beyond these limits and you can quickly melt pistons, liners,
> valves. If you operate beyond the limits the damage won't generally happen
> instantly but it turn a good running engine into one you wish you didn't
> have. I have seen it on more than one occasion.
>
>
> Jim
>
>
>
> At 08:00 PM 10/2/2004, Patrick Jankowiak wrote:
>>How about putting the thermocouple here in place of this pipe plug?
>>
>>Anyone ever 'successfully' removed this plug or know anything about it?
>>
>>http://208.190.133.201/m35misc/miscpics.html
>>
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>
> James Shanks
> n1vbn@arrl.net
> 1985 M1009
> 1998 IMZ 8.103
> 1984 H-D FLHT-C
>
>
>
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>
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