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Veteran
 
Location: Canton, (Sixes) GA | Even though I recently spent a bit of time and effort cleaning the radiator from inside the engine compartment, I was unhappy with the temperatures encountered during the South Carolina trip last weekend (200-220) while running around 60 MPH. I pulled the grill and cleaned it again from the back, using a light on the inside to make sure all areas were clean. First time I have done this. Started to put a piano hinge on the grill to make it easier next time, but just did not work out. We'll soon see if I did any good or not, leaving for Kansas Monday or Tuesday. I don't see any way to put an oil cooler on this diesel. Has two 2 quart oil filters side by side, no room for an adapter. I may add a transmission cooler, that would be fairly easy to plumb in but I doubt the Allison is getting very hot, maybe the torque converter. Hope to pick up some ideas in Minden. At least gages. Pictures in albums. .. Denny
Edited by denshew 2010-05-27 4:39 PM
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Veteran
Location: Kingsley Michigan | Denny;
I just learned from Lief Scott who used to have a truck business (2600 of them--) and he had the good folks at International do a study on his coach and the overheating issues. They found----and recommended that if he removed the rear grating the the engine temp would drop significantly.
I have been doing simialr tests with a manometer that I have a remote sensor that I have been moving around in many different locations in the radiator and engine room areas--- This is a crude but very revealing unit (consisiting of nothing more than a U shaped 24" loop in a hose filled with water--) so the actual scientific data in bars of preasure and vacumn I cannot tell you BUT----- in thinking about the recommendations of the wizards at International ----and having pressure readings of 1/2" of water column to the rear of the radiator with my tool--and having temps building to the 200 degree area at 60 mph---I removed the rear radiator grating and BAM! We can now push 70 mph at 195 max on the temp with nothing over 185 below that! My crude manometer was sucked dry so I can't give you any readings there but an obvious change existed.
Hope this helps and I will be doing more modifications as the other recommendation from International was that all of the air inlets on the side and back ought to be a large mesh style to which they say you can drop the overall engine room temp by 40 degrees----So here I go---
Your Bud Barn |
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Expert
Location: Cottage Grove, OR | .... or do we go back to dicussing putting the radiator(s) up under the front for ram air? |
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Veteran
Location: Canton, (Sixes) GA | Wow Barney, dramatic difference!! Need to think about it.. wonder if drilling holes (maybe, say, a hundred or so) in the rear grill would make a difference and not change the appearance all that much.. we'll talk about it over a cool one in a few days...ds
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Regular
Location: Clovis, Ca | So how did you deal with the "looks department" when removing the grill? |
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Expert
Location: Cottage Grove, OR | I was recently reminded that the first step in controlling FMC engine tempurature is ensure that the spaces between the radiator and the grillwork is filled with something to prevent hot air coming out of the back of the radiator from recirculating around the sides and bottom and back into the front of the radiator. You can't cool an engine with the same air over and over. If not done already, seal between the radiator and the grill so that the air is forced to out of the grill. |
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FMC 0890 engine temp issues