KTM 625 SXC -- Anyone installed an extra oil cooler or reservoir ?

Discussion in 'Thumpers' started by christian, Sep 28, 2006.

  1. Rubber_Down

    Rubber_Down SF Rat...

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  2. Wylie

    Wylie Back in the saddle again

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    Geez my oil cooler is going to be huge compared to that one. If all works out as planned it should mount in a little safer spot, I'm figuring almost a quart or 950 milliters or so capacity. :D
    #42
  3. Tuff Tunica

    Tuff Tunica Moto-Skiveez creator

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    I don't really ride this bike much when it's cold so I haven't incorporated a temp regulator. I figure any additional cooling to be a benefit. It just flows through as part of the whole system. Probably the better benefit is the additional 300cc which is about a 25% volume increase and an additional filter.
    #43
  4. Tuff Tunica

    Tuff Tunica Moto-Skiveez creator

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    Initially I was really concerned about the location. I don't really do too much technical riding with big logs or rocks. Most of my stuff is open desert. I always carry the original oil line in the event of a failure. It would be extremely easy to bypass this entire system and just re-install the original oil line.

    Having said that, this sytem has survived multiple dings and hits with nothing more than a slight mal positioning of the cooler. Although I'm sure it would most likely not withstand the abuse of a Dakar type rally, for my purposes is has turned out quite well.
    #44
  5. meat popsicle

    meat popsicle Ignostic

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    Hm, well oil has an operating temperature range; you obviously know what too hot means: thermal breakdown, but do you know what too cold means?

    http://www.thunderpress.net/MONTH_ARTICLE-pdfs/2006/0306_MotorheadMemo.pdf

    http://www.jalopyjournal.com/forum/archive/index.php/t-23677.html

    http://www.katsauto.com.au/eng_flush.html

    #45
  6. Wylie

    Wylie Back in the saddle again

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    #46
  7. G.Kennedy

    G.Kennedy ...

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    Curious where you sourced these two items???? I thought they were unobtainium in the States.

    My '02 is about to pass 25,000 miles ... running perfectly, but I am considering tearing down this winter and doing valves, cambearing and chain ... figure if I am in there I will do the rings. But .. if I could make it a 660 ...hmmm

    I would like your thoughts on the 660 .... fyi ... still using a BST here, not sure if 660 and BST go together.
    #47
  8. Tuff Tunica

    Tuff Tunica Moto-Skiveez creator

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    Can't help with the BST compatability question, as for the parts try this http://www.ktmax.de/indexa.htm. And YES as far as I know they are unobtainable in the states. But you can get them abroad and have them sent. Let me know if you need more info.
    #48
  9. AdventureDave

    AdventureDave MMMMM Bundy!

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    I thought I would revive this old thread and see if anybody has come up with anything creative for adding an oil cooler to a 625 sxc, LC4 or 640 ADV? I have the Australian delivery model with the oil in the frame, so I already have the 1.9 litres but keeping it cooler and adding another few hundred mls would be good.

    After searching it seems that Setrab and Jagg have the best 'bike suitable' oil coolers to start from. The 660 rallye nav tower mounted is over $1000 so isnt really a sensible option.

    Does the twin air model connect easily to the LC4 motor?

    All input, thoughts, meanderings are welcome.

    Cheers

    David
    #49
  10. Rockgarden Bob

    Rockgarden Bob Been here awhile

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    I'm also looking for an oil cooler for a 2004 625 SXC, I'll post if I find something. Been wondering if the Twin Air will work.
    Bob
    #50
  11. meat popsicle

    meat popsicle Ignostic

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    You may be going overboard wanting to add more oil capacity. It looks like the 660R has an oil cooler, but that's for racing. Do we mere mortals need it?

    That said my 03 640A was able to overheat when running slowly (traffic jam) in hot (HOT) weather - Tennessee summer. Some thoughts on that issue:

    My fan comes on when the bike is already damn hot - seems late. There is a different thermostat switch that some put on their bikes to make the fan come on earlier. Others wired a manual override switch to the dash.

    There is room for a second fan on the other radiator (at least on the 640A). Wiring a second fan to come on with the first (or manually) is probably the best option.

    If you really need to stay cooler then there are aftermarket radiators that are higher efficiency than the stock KTM units. Pricey, yes, but this will keep your bike cooler for sure.

    If you have higher efficiency radiators you could then use a higher efficiency coolant (Water Wetter, Evans, or liquid Sodium?) but remember that your temp gauge is calibrated to the stock setup - you'll need a new temp monitoring setup (CHT or EGT is better than coolant temp anyways).

    And/or you could connect an oil cooler; una mas:

    http://www.advrider.com/forums/showthread.php?t=74910
    #51
  12. AdventureDave

    AdventureDave MMMMM Bundy!

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    Thanks Meat. I dont race, not even close, but I do live in subtropical Queensland and my bike can overheat in traffic on a hot day. I have just fitted the second fan and changed to the lower temp thermostat and yes they do make a difference but I am concerned about doing desert trips or low speed sand in the still weather. Combine that with gear for camping and I thought a cooler may help. It is surprising how many bikes come standard with an oil cooler.

    I'll take what you said on board and maybe rethink... I maybe overcomplicating things.

    Cheers

    David
    #52