| Author |
Message |
Leslie Robinson (Lesrmc9)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 22, 2004 - 9:40 am: | |
question does anybody have a pyro on 8v71 NA engine???? I would like to know some facts from somebody that has this setup |
TWO DOGS
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 22, 2004 - 12:55 pm: | |
there is two of them for sale for 10.00 ea. at the "E" place |
Gus Haag (Mrbus)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 22, 2004 - 5:40 pm: | |
Leslie,
I have a double pyrometer on a non turboed 8V71.
There is a sending probe in each exhaust pipe at the end of the manifold, that read on a two needle instrument on the dash. It is an Isspro unit, and has worked very well for the last four years that I have been using it. It is extremely valuable way of telling me to lift my big right foot when climbing the big hills.
Gus Haag |
Leslie Robinson (Lesrmc9)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, October 22, 2004 - 9:42 pm: | |
2 Ds tks I will check on that
Hi Gus
Thankyou for the reply! I have driven trucks for 35+ years all the trucks have had all the instruments! When I drove my mc9 back from Indiana I blew the engine; I'm sure "I" over heated it as it had no pyro which I'm used to having; the coolant temp guage didn't get to the 2 of 200 deg when it shut down. With all that said, what temp is the highest you have ever had your pyro read??? |
bruce king
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 23, 2004 - 12:07 am: | |
so a pyro is a device that measures the temperature of the exhaust? Or the manifold itself? |
Leslie Robinson (Lesrmc9)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 23, 2004 - 12:39 am: | |
A pyrometer is an exhaust temperature gauge that allows you to read an immediate change in exhaust temperature. This constant monitoring of temperature alerts the driver to temperature problems so the driver can adjust throttle. |
Marc Bourget
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 23, 2004 - 5:58 am: | |
Leslie, not to be argumentative, just more accurate, a better term to use than "immediate" is "prompt".
A friend of mine is a professor of mechanical engineering at the University of Pacific. He's teaching an instrumentation course this semester. I'm (indirectly) learning lots of instrumentation factoids over lunch as a result.
In any case, the pyrometer is "fast enough" for the intended purpose. I wanted to avoid the mis- perception that might accompany the use of the term "immediate" for others that don't have my resource.
Onward and Upward
Marc Bourget |
Gus Haag (Mrbus)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 23, 2004 - 4:28 pm: | |
Leslie,
My pyrometer has never been over 11, and then only for a short while, I usually shift down of back off the throttle just a little above 9. I am running 65 injectors with advanced timing, and it will heat up quite rappidly if I stand flat footed on it. Normal freeway speeds across the flat country will see temps between 3 & 5, but even in the flat country when I push down on the throttle, it will climb quickly.
The Pyrometer will respond much quicker than the water temperature, but prolonged high temps on the Pyrometer will result in climbing water and oil temperatures.
I am somewhat adicted to instruments, I just like to know what is happening back there, and it always helps to have some advanced warning before anything catosthropic occurs. I also have tranmission temp, read end temp. fuel pressure low water warning, and on and on. I even have oil pressure and water temp gauges for the APU.
Gus Haag |
Jim Ashworth (Jimnh)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 23, 2004 - 6:46 pm: | |
Leslie- Getting back to the original post, what "facts" are you interested in? Average temp? or Maximum temp? or ??? I have one on my DDEC II 8V92 and the DDEC keeps it to a max of 950-1000F no matter what I do with my right foot. Flat ground at 70mph is about 5-600F. I understand aluminum melts at 11-1200F.
Jim |
Leslie Robinson (Lesrmc9)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, October 23, 2004 - 8:28 pm: | |
to Mark; as a truck driver and using pryos for 25+ years; when i munch down on the throttle and within 2 seconds see the pryo needle start to rise that is close enough to "immediate" for me!
the above statement was taken from EGUAGE website
to Jim; Thankyou for the reply and info; aluminum melts at a higher temp than that; color coded pyros are red lined at 1200 deg F.
to Gus; Like you when this engine is rebuilt I will have almost the same amount of guages as you; how are the probes attached? are the bushing or nut welded to exhaust pipe after the manifold? My engine will have C60 injectors as these and other parts for 8v71 are priced at "an offer I can't refuse" (get the meaning) |
FAST FRED
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, October 24, 2004 - 5:06 am: | |
With C-60 , the std injector , you will hardly BE able to overheat.
Perhaps a long uphill slog at 1000RPM , but otherwise , probably not.
FAST FRED |
R.J.(Bob) Evans (Bobofthenorth)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, October 24, 2004 - 10:32 am: | |
So pardon my ignorance but where are you installing the pyro? Pre or post turbo?
We run pyros on our highway tractors and some offroad equipment - we look for 900 "normal" operating temps and 1100 drop dead temp for post turbo installations. But I also have a pre-turbo pyro on a 2001 Powersmoke. On it I run up to 1300 routinely with brief excursions past 1300. It redlines at 1350. |
Gus Haag (Mrbus)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, October 24, 2004 - 6:41 pm: | |
Leslie,
I simply drilled two holes in the exhaust pipe just past the connection to the manifold, welded on the nuts, and screwed the probes in.
Gus Haag |