| Author |
Message |
David Hartley (Drdave)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 04, 2006 - 6:46 pm: | |
Does or has anyone in the warmer climates sucessfully removed the old radiator louvers and had better cooling?
I can find no reason to keep them here in the south and figure they probably don't work anyway.
Just wondering if the air flow is better to the radiators without them.
I know, I know.. I am supposed to know these things.. I am tired and brain not working too good right now.... |
marcschlabach
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, March 04, 2006 - 9:40 pm: | |
I live in Florida and have no louvers on my MC9. I have no problem with over heating. I didn't add anything. I don't even have air scoops on.I try to keep my air filter clean and make sure there are no leaks in the air duct going from the filter to the blower. I had a tear in it one time and that caused overheating, because it was sucking hot air off the engine into the blower. After I replaced that the problem left. I seldom run on dusty roads, which helps keep the filter cleaner. Hope this helps. Marc |
motorcoach1
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 05, 2006 - 4:07 am: | |
Dave i like what you said about my orphan but when it comes to a commercial bus con vert there are some things that should stay the same no matter how much you don't care for it. i had an auto car tractor that someone took the lovers out on and the engine would never come up to temp. and the break system on long down grades as in old 220 into willamsport PA was a dead end in the 60's didn't have ample air to stop safely ,,had to deal with it...if you would look into the future and had to sell it .. the person up north might have a problem getting it to set the temp on the run time and maintain the correct temperature for the engine. if it stays open good thing if it doesn't work leave it there until it works , your choice . my call is the person that purchase in the future may need the louvers. food for thought ...thanks for listening mike ----- PS Fred hobe had a thing on his web sight about that, good reading and the air intake on the engine vacuum pressure .. i believe that may increase your fuel mileage..nice rts you have there |
jlvickers
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 05, 2006 - 10:35 am: | |
I think the proper word is radiatior shutter's.
I have seen shutter's stick closed and cause a over heating problem on a Greyhound Scenicruiser that my daddy was driving with the 2-4/71's this was many years ago.
My dad manualy opened them and then locked them open with a bolt&nut and we continued the trip with no problem.
My P8M4905A came from the factory with out the shutter option.
I think with no air applied to the shutter cylinder the shutters will remain open but I am not sure on this.
JLV |
jlvickers
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 05, 2006 - 11:09 am: | |
Per MCI-9 Maintenance manual dated 1-1-89 section 6 page 6-11.
When the engine coolant reaches the temperture of the shutterstat setting.The shutterstat cuts off the air supply to the radiator shutter air cylinders,and the shutters open.When the coolant temperture is below the setting of the shutterstat,air is allowed to enter the radiator shuttle air cylinders closing the shutters.
jlv |
ChuckMC9 (Chucks)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 05, 2006 - 12:38 pm: | |
Mine ain't got none, don't look like it has ever had.
Maybe that's why it takes so long to warmup. |
Marc Bourget
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 05, 2006 - 2:34 pm: | |
The cycling explained by Mr. Vickers saves energy as the fan doesn't draw much power if it's not moving air. Since the air sufficient to cool a bus takes up to 35HP to move (depending on engine, load, ambient temp, etc, this can get substantial. |
David Hartley (Drdave)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, March 05, 2006 - 3:17 pm: | |
I think that when I get a chance I may just remove them as they are locked open anyway.
my engine runs at 185 to 195 at highway speeds and doesn't take long to warm up. Besides I tend to rip out anything not needed anyway. Just another day.
I am not worried about the next owner. Unless I win a lottery and buy a new bus this one will probably outlast me unless it goes to the shredder before I do.
Was just curious about that....
Thanks Guys.... |
Buswarrior (Buswarrior)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, March 07, 2006 - 9:23 pm: | |
Hello Dave.
If you are staying south...
Yank 'em out, carefully, of course, and give 'em to a northern busnut for spare parts.
Busnuts don't usually idle for extended periods, we just start and go for a drive. Shutters help to keep the engine temps up when it is cooler out and the engine is lightly loaded. Not conditions that a southern busnut needs worry about.
Those who will be operating in winter conditions need to pause and think very hard. No shutters might be compared to sending your engine outdoors wearing nothing but shorts at minus whatever.
If you do any heating or defrosting with the engine, that heat has to come from somewhere too!
Shutters are simple devices, return springs pull them open, air pressure closes them according to engine temps. If they stick, there is something mechanically jamming them or the spring has broken or jumped off. Build up of dirt, combined with attempts to lubricate are common causes. Best shutters for a busnut are clean and dry. No lube, no dirt, on moving parts. May need pressure washer to sort out a bad set?
I maintain mine up here in southern Ontario.
For instance, temps a few degrees below freezing, long drive on the highway, pull off the highway, stop at stop sign, pull into parking lot, park, engine on fast idle, walk down the back to look at engine room, and while you are there, or before, the shutters will close. Engine and entire cooling system volume has already dropped below operating temps to close them.
happy coaching!
buswarrior |