Hi Rikk,
You need one only sensor (capillary) mounted after the turbo. The limit
after the turbo is 900 F. and 1200 F. if mounted between the engine and the
turbo. 99 % of all factory installations for a pyrometer is after the turbo.
Just for info the 300 degree difference between mounting points is how much
energy/heat the turbo takes out of the gas stream.
The main purpose of the pyrometer is to let the drive monitor the
exhaust temp and prevent it from getting too high where it can do damage.
James Shanks
n1vbn@bit-net.com
----- Original Message -----
From: Rikk Rogers <rkltd@swbell.net>
To: Mil-Veh2 <mil-veh@uller.skylee.com>; MVlist <MVlist@yahoogroups.com>
Sent: Friday, April 27, 2001 10:41 AM
Subject: [MVlist] RE: [MV] M35-A2 Pump Tweeking
> Ok, folks....
> I have an M35A2, with a turbo and have nothing resembling a Pyrometer.
> Should I have one?
> ifso
> Where should I get it and where should I put it, and by this email maybe I
> need 2 one in each spot?
>
> With vague dis-quiet......
> rikk
>
> -----Original Message-----
> From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org]On
> Behalf Of James Shanks
> Sent: Thursday, April 26, 2001 10:05 AM
> To: Military Vehicles Mailing List
> Subject: Re: [MV] M35-A2 Pump Tweeking
>
>
> Jonathan,
>
>
> 885?? Don't touch it!!! LEAVE IT ALONE!!!!!!!!!!! I cannot stress this
> highly enough. IF the sensor is mounted AFTER the turbo
>
>
> First go out to your truck and lift the hood all the way up....walk to
> co-driver's side and peer into the gloom that is your engine bay. Look at
> the turbo specifically for the capillary tube for the pyrometer, if it is
> mounted between the engine and the turbo the limit for the pyrometer is
1200
> F. If it is mounted between the turbo and the exhaust stack IE: the side
> where the muffler would be if equipped then the limit is 900F.
> TOPS!!!!!!!!!! Go beyond either of these limits depending on where the
> sensor is mounted and expect minor problems like religious pistons
(remember
> to pray before the Great Hercules God ) cracked heads, liners,
> melted/cracked exhaust manifolds. Not to mention the odd
melted/warped/stuck
> valves and impulse powered cylinder heads <warped> you want more power buy
a
> five ton Mack with the good old 672 Maxidyne in it.
> Remember if the sensor is after the turbo and reads 885 F. leave it
> alone....if it seems a little bit underpowered climbing the hill kindly
stay
> in the right lane.
>
> James Shanks
> n1vbn@bit-net.com
>
>
> ----- Original Message -----
> From: jonathon <jemery@execpc.com>
> To: Military Vehicles Mailing List <mil-veh@mil-veh.org>
> Sent: Wednesday, April 25, 2001 9:03 PM
> Subject: [MV] M35-A2 Pump Tweeking
>
>
> > I'm looking to tweek the injection pump on my LDT-465 just a bit. I just
> did
> > a test run today and recorded a peak boost pressure of 11 psi and
exhaust
> > temp of 885 deg F while running wide open at about 55-56 mph. Does
anyone
> > know if these numbers look like I'm already at my limit or could I
> increase
> > fuel delivery alittle more? And if so, what would be the limit on
exhaust
> > temp to keep an eye out for?
> >
> > later,
> >
> > je
> >
> >
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>
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This archive was generated by hypermail 2b29 : Tue May 01 2001 - 07:42:42 PDT