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How to make sure engine doesn't overheat?

Discussion in 'Griso-Bella Chat & Tech' started by Guzzi Cat, Aug 17, 2014.

  1. Guzzi Cat

    Guzzi Cat Just got it firing!

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    Location:
    Co, Kilkenny, Ireland.
    Hi all,

    When I was stuck in traffic on my way to the Ulster Grand Prix road race yesterday l became aware that my engine was probably getting hot from lack air flow through the cooling fins.

    I was wondering is there much chance of damaging the engine in this situation or is there any type of built in safety feature that will cut in or is the oil alone capable of doing the job?

    This is not normally a problem in this part of the world but in warm countries? just curious,

    Guzzi Cat
     
  2. GTM®

    GTM® Administrator Staff Member GT di Razza Pura

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    There are a handful of "safety" parameters built into the fueling circuit, however the motor will let you know when it's too hot by lumpy idle, and it might just quit running. If it does, a short cool down time will restore it. I've run my bikes in 120º+F/48.8+C with no issues, though never sitting in traffic. I'd say don't sweat it, but if you want to really want to help the issue, revise the fueling and it will help immensely. My ECU re-flash or PC-V/02-Opt is a good start. Feel free to contact me direct email for more info; Todd at GuzziTech.com
     
  3. ghezzi

    ghezzi High Miler GT Contributor

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    Towed a melted Ducati Monster recently. Female (Doh!) owner left it to idle for 45 minutes to charge the battery up a bit.
    Plastic covers over cam belts melted, molten plastic between belt and pulleys doesn't auger well.
    Belt snapped, valves bent. Internally a lot of metal parts had blued. It was not a hot day.
     
  4. marcsiry

    marcsiry Tuned and Synch'ed

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    Location:
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    The last couple of times I rode in fairly hot weather (80+ degrees F, ~30 degrees C) my bike started 'complaining' with the lumpy idle and flashing the red oil light at me when revving up from a stop.

    I decided to get one of the oil temp dipsticks to see what that meant. When I got home from a ride today where it was doing the same toward the very end, I hopped off the bike and checked the dipstick- it was PEGGED at 140 degrees C (the maximum value), and took a few minutes to start coming down from there after I switched off.

    I check and change the oil frequently. I think I'm going to have to go for one of Todd's ECU upgrades, despite being a little tight on cash due to a house move. Lean fueling + bad traffic here in the Northeast is not a good combo on a hot day.
     
  5. Simo

    Simo Just got it firing!

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    Personally I the Griso is overcooled, but if you are worried about cooking your oil, then maybe consider a small bushless fan on the oil cooler, (like moto x bikes).
     
  6. cse

    cse Tuned and Synch'ed

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    Location:
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    Hello.

    Been having the same problem since I changed to the 10W60 both Motorex and now the Eni i-ride, what can I do to stop that issue, last time it did the oil light in traffic and hot engine it was not so hot weather, in the summer it will get much hotter. Allready thought about the fan, but it will be hard to make it look right on a artwork like griso.
    And after some cleanup disassemblying I noticed that it has a left cilinder exhaust valve with white color and a right exhaust valve with black color and the inside of the exhaust and oxigen sensor are all very black. Had the injectors cleaned today but I suspect that wasn't the problem.Any Thoughts?
    Other thing, my spark plugs allways have oil in their threads when I take them out but their color is brownish with no deposits...


    P.S. Had a clogged engine breather/blowby box that was repaired today. But I don't think it would cause that much problems.
     
  7. marcsiry

    marcsiry Tuned and Synch'ed

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    Update- it turned out that a previous service shop had cracked the resistor on one of the cylinders, causing the cylinder to miss occasionally. Additionally, they had fitted incorrect plugs to the bike. I took the bike to a different shop and both issues were addressed. The bike ran much better and cooler on the way home thank it did on the way up.

    After about 5 miles of slow stop and go traffic on an 80 degree day, the oil temp was about 130c. In addition to fixing the fueling, I'm thinking of asking Todd to do a run of his oil cooler screens with a cutout and screw holes to mount a brushless fan. The fact is that due to where i live, I am bound to get caught in traffic frequently. If anyone has seen an existing aftermarket fan setup for a Griso, please let me know...
     

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