| Author |
Message |
Jim Bruneau (Rockymtnbus) (66.113.4.69)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, August 09, 2002 - 11:45 am: | |
In my previous thread of Eagle 05 vs. MC-7 mention was made of MCI's poor cooling systems. I have noticed that some type of spray bar is installed for the radiators....
Is this a common problem with MCI's , AND does this spray bar thing fix the problem??
Do the Eagles have this problem?
I used to drive a GM 4104 years ago that had a cronic overheat problem, so it doesn't seem limited to MCI's. |
jmaxwell (66.42.92.18)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, August 09, 2002 - 12:07 pm: | |
MCI seems to have gained a reputation, but in my experience and knowing a few dozen owners of various makes and models, we all seem to have to drive with an eye on the temp guage. The spray bar (mister systems) do help on those long pulls out West. Just about everyone I know of has had to put a lot of time, effort, and in a few cases, big money, into correcting over-heating problems. MCI more or less corrected their problems with the MCI 9 model by utilizing larger fans and opening up the fan discharge area. I have a few friends that have done the mod to their older MCI's. Most of the Eagles I know of have been re-powered and have had extensive radiator changes to go with the re-power work. |
Buswarrior (Buswarrior) (64.229.209.158)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, August 12, 2002 - 9:01 pm: | |
Hello.
MCI didn't design very much excess in the capacity of the cooling system in the MC7/8& early 9's, and was heavily reliant on seals for keeping the air sucking through the radiators and not past the access doors. The system also had both shutters and damper doors on the fans. The damper doors have a habit of getting a little lazy and don't open quite all the way. An inch is sufficient to cause an overtemp. Many strip the damper doors out and just keep the shutters. Never mind what aging rads will do.
Any little thing will cause a problem.
Like everything else in a coach, if everything is the way it was new, it'll be fine. MCI's just have to have their entire cooling system in top shape all the time.
Judged by it's limitations, it just needs a bit more careful attention to detail than some other coaches.
happy coaching!
buswarrior |
FAST FRED (63.208.84.226)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 13, 2002 - 5:39 am: | |
"Like everything else in a coach, if everything is the way it was new, it'll be fine. MCI's just have to have their entire cooling system in top shape all the time. "
One example of why cooling systems go south is NOT following Mfg recomendations.
EG , Most antifreez mfg recomend flushing with chemicals and replacing the antifreez every 2 years .
If this isn't done the silicates in some antifreez will eat the seals in the water pump, the slime that stops surface erosion from cavitation will thicken & harden , and of course all the anticorosives are long gone , disolving?
PM is frequently never done by RV folks , so problems will follow.
FAST FRED |
Jim Bruneau (Rockymtnbus) (66.113.28.138)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, August 13, 2002 - 11:53 am: | |
Very good information, gentlemen, thank you for the info.
In searching for a motorcoach, I'm trying to find out the pro's and con's of the models I'm interested in BEFORE purchase.
I still admire the 'battleship charging forward' looks of the MC-7's, and am glad to hear their cooling system problems are fixable. |
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