Oil sight glass replacement

Discussion in 'GS Boxers' started by Steptoe, Feb 28, 2008.

  1. eric2

    eric2 ®egister this:

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    Good writeup, and it is that easy. Any feedback on using RTV on the new sight glass circumference? These suckers have been known to blow out

    Some dude on ibmwr lunched his engine because the sight glass was too dirty to see through when he coulda fixed it for $20; because it was out of oil :cry
    #21
  2. 40MileDesertRat

    40MileDesertRat Born Again Pagan

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    Been meaning to do this. Now I will.

    Thanks,

    40mile....
    #22
  3. Grok

    Grok Long timer

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    Crankcase pressure seems to be the culprit. I have 2 friends that have lost sight glasses. Both said there was some kind of misfire/backfire that popped it. It doesn't seem like they could just fall out, but I don't know.

    I could only find 2 explanations as to the mechanism that made any sense to me. One is clogged crankcase vent line. The other is a misfire/backfire that somehow ignites fumes or fuel associated with the vapor canister.

    Internet rumblings a few years back on this subject added to the popularity of the canisterectomy.

    In either case, maybe the lack of retaining ring on the 1100/1150's is a good thing? It certainly might save seals if the sight glass was treated as sacrificial. As long as the issue is caught before meltdown!

    That's all I got. Anecdotal evidence and speculation!

    On the subject of sealing with RTV, it couldn't hurt anything!
    #23
  4. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    Local club member, and fellow inmate, Menloe fried his motor from dirt on the sight glass. He assumed it was full of oil, but the sight glass was simply dirty.

    Jim :brow
    #24
  5. GSfornow

    GSfornow Been here awhile

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    My 1100 has an oil pressure warning light. Do the newer bikes not have this or did his fail?
    #25
  6. JimVonBaden

    JimVonBaden "Cool" Aid! Supporter

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    His went on, about the same time his motor fried.

    Jim :brow
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  7. GSfornow

    GSfornow Been here awhile

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    Nice - I read somewhere that some of the new BMW cars do not have dip sticks and the warning lights have been coming on so people add oil. Unfortunately the lights are malfunctioning and the motor does not need oil so the engine goes south. BMW has said that the proper way to check oil level is to take your car to the dealer they will drain and measure the oil, reinstall it and add as necessary. Wonder if that feature will be coming to a motorcycle near me.
    #27
  8. Racegun

    Racegun Single Track Mind!

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    To check oil this way, is completely idiotic! What moron thought of this. Have BMW engineers being going to lunch with detroit's engineers? Freaking lame idea!
    #28
  9. marchyman

    marchyman barely informed Supporter

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    Assuming the oil pressure warning works the same way it does in just about any other vehicle made all it is doing when it comes on is telling you to pull over... you've just destroyed your engine... please stop before the engine seizes and you get hurt. :lol2

    // marc
    #29
  10. KTM640Dakar

    KTM640Dakar Motorsick

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    Detroit Engineers?

    :ddog
    #30
  11. GSfornow

    GSfornow Been here awhile

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    Have American engineers removed dipsticks on their cars too? :eek1
    #31
  12. jigdog

    jigdog Been here awhile

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    The new F800/650GS doesnt has a sight glass they have gone back to dipsticks. BMW is always doing that. Designing in some idjit idea and then removing it later on. Like the FD drain plug elimination/reincarnation. If they cant get the small stuff right makes you wonder about the important things...
    #32
  13. GSfornow

    GSfornow Been here awhile

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    Interesting I was thinking back and over the course of a long driving career I recall having a low oil pressure light come on twice, both in cars that were not my job to maintain, one a rental truck I added oil and completed a rather long trip with no odd noises or noticble ill effects. The other was similar, light came on checked then added oil and no problem. Now the rental truck who knows what happened to that but the car I was able to keep track of that for a long time. It ran well for many many years with no blown engine. Maybe the warning process has changed over the years though?
    #33
  14. Racegun

    Racegun Single Track Mind!

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    dunno, and no offense, but as a former auto tech, detroit builds some real crappy stuff and lots of it was not meant to be maintained or repaired. Sorry ktm640! Every mechanic i knows feels the same way! There were a few times, had i met a detroit engineer after work, on certain days, i would not have been responsible for my actions! and thats no shit!
    #34
  15. KTM640Dakar

    KTM640Dakar Motorsick

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    So your saying that you have never in fact met an engineer who resided in the Detroit metro area, but because you fixed broken cars all day for a living that you can generally say that all cars comming from Detroit are crap.

    Boy I am glad I don't generalize like you do. Because I have heard that all the people in Louisiana live in a swamp.

    No offense taken.
    #35
  16. roadrage

    roadrage Long timer Supporter

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    I reckon cleaning the site glass when checking oil might have made more than a little sense.... I don't trust the stupid thing when it's clean let alone dirty.
    #36
  17. roadrage

    roadrage Long timer Supporter

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    German engineers... ;-)
    #37
  18. Voltar

    Voltar Jr Asst Road Captain

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    I live in Texas and we all ride horses to work.
    #38
  19. vintagerider

    vintagerider Long timer

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    The oil drain plug is removed and replaced with a steel braided oil line which attaches to a reversable flow fluid valve body (spool) mounted under the frame. A positive displacement electric fluid pump is installed near the spool. Another steel braided line is connected to the spool and runs up to the Givi top box. The oil sight window is permanently removed from the engine case and replaced with an alloy plug heli-arced in place on the engine case. No more site glass to replace ever! A hole is drilled in the side of the Givi case to accept the original site glass. Inside the Givi, the new steel braided line connects to the bottom of a one gallon graduated cylinder. The spool is controlled by an electronic relay activated by dipping the hand grip heater switch three time in rapid succession to activate the new fluid pump and spool assembly which transfers the oil to the Givi. Simply look through the relocated site glass on the top box to make sure your oil level is correct. A safety interlock takes advantage of the BMW side stand kill switch to prevent undesired oil transfer while riding. A worth while option is the laser and pick-up mounted 180 deg opposed on the graduated cylinder. As the laser passes through the oil in the graduated cylinder, the amount of light and diffusion is measured to check for oil impurity by an on board computer developed by TechIlusion. Six fast dips of the hand grip heater switch returns the oil to the engine sump via the external fluid pump and the reversable fluid control spool. Another deluxe option alllows for the graduated cylinder in the Givi to hold an extra gallon of fuel. This set up, controlled and monitored by the TechIllusion CPU, allows the spool (now fitted with a third and forth hose), to transfer the spare fuel carried in the Givi to the main fuel tank via a tee installed in o.e.m.fuel pump return line. The rider is able to program the TechIllusion for even more options, such as tranfering fuel to your buddy who ran out of gas because he was too cheap to buy the spare fuel option. Note that the spare fuel MUST be transferred out of the cylinder prior to performing the on board oil quantification and oil analysis. If the rider does not do this, the TechIllusion sensor detects the presence of fuel in the Givi and locks out the Canbus system. I simply don't understand why TT didn't provide a third option to the fluid valve transfer spool to allow the accomodation of a connection to an on board high pressure pump driven off the alternatorr belt which lets you pressure wash the bike on the trail once the fuel has been expended. Perhaps they are concerned about residual water the rider might leave in the graduated cylinder. Couldn't a sensor be added to detect residual water in the graduated cylinder utilizing the TechIllusion to lock out Canbus for the forgetful rider?
    #39
  20. jigdog

    jigdog Been here awhile

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    The oil sight glass was one of those things that seemed like an advance over the dipstick. How many sight glasses blow out? Probably not very many. My objection is I have to get down on my hands and knees to read the oil level now.
    #40