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Manifold Temperature

Newbie Question:  :help:
What is the acceptable range for manifold temperature on a 1999, M11, 450 hp engine?
"KEEP ON TRUCKIN'"
1999 CAI-3600 U320
Mike, Karen & Butterfly

Re: Manifold Temperature

Reply #1 –
Mike,

One of the reasons for no responses, is that unless you modify the engine, EGT's are not an issue.

Said another way, the engine "as built" can got exceed acceptable EGT's.

Hopefully, someone with the same engine will have fit a pyrometer and/or have specific info from Cummins.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020

Re: Manifold Temperature

Reply #2 –
If you are talking about intake manifold temp, my ism generally runs about 20 degrees above ambient. Exhaust temp runs about 8-900 f. at cruising speed, and might hit 1250 on a long climb.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.

Re: Manifold Temperature

Reply #3 –
Quote from: jcus –
If you are talking about intake manifold temp, my ism generally runs about 20 degrees above ambient. Exhaust temp runs about 8-900 f. at cruising speed, and might hit 1250 on a long climb.

Plus one
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Manifold Temperature

Reply #4 –
Thanks for the response. I have a VMSpc which gives me intake manifold temperature and I read somewhere that IMT is important to monitor, however I have no idea what is normal.

Mike
"KEEP ON TRUCKIN'"
1999 CAI-3600 U320
Mike, Karen & Butterfly

Re: Manifold Temperature

Reply #5 –
Quote from: RainCatcher –
Thanks for the response. I have a VMSpc which gives me intake manifold temperature and I read somewhere that IMT is important to monitor, however I have no idea what is normal.

Mike
You will find intake manifold temps will be higher when you first start driving because water temps are lower and the hyd fans are not necessary. As water temps rise to fan operation level, manifold temps will fall because charge air cooler is in line with radiator and will cool with fan operation. Might be +50 for the first couple of miles, but will drop as water temp rises. Typically, in Texas summer, if ambient temp 95 f, charge air [manifold] will be 120 to 135.
Jim C.
coachfree, previous 1997, 1999, 2000, and 2003 Foretravels.
 

Re: Manifold Temperature

Reply #6 –
Thanks Jim, that is helpful, really appreciate the education.

Mike
"KEEP ON TRUCKIN'"
1999 CAI-3600 U320
Mike, Karen & Butterfly