You should see the damage

Discussion in 'UK Motorcycles' started by sweller, Aug 3, 2007.

  1. sweller

    sweller Guest

    Guzzi cam - doesn't seem too bad from peering down the pushrod tunnels:


    Hog passed comment on an oil cooler - this may be a good idea. There is
    an external oil feed to the cylinder heads

    see this picture:

    The feed is the grey braided banjo hose. It comes from a single banjo and
    feeds the rocker lubrication to each head which then drains down the
    pushrod tunnels to the sump.

    I could mount a cooler more or less where the horn is in this picture:

    If the single feed went to the cooler then running off a double banjo
    split to each head.

    Would the feed to head lines need to be equal length?
    Do oil coolers come with male or female fittings?
    What would be a likely donor bike to supply a cooler.
    Do they have thermostats or would it be cooling all the time?

    sweller, Aug 3, 2007
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  2. sweller

    sweller Guest

    Already has one - their primary purpose is less about cooling (although
    that is a side effect) but to increase the volume of air under the
    pistons which assists with breathing problems on higher performance Guzzi
    sweller, Aug 3, 2007
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  3. Alternatively, you could try a sump extension. Allows the bike to carry
    more oil, and (obviously) extends the sump, therby improving both lube
    quality and cooling.

    I rode down to the Bol many years ago with a feller who had one on his
    Le Mans. They used to be easily obtainable and (of course) a doddle to
    fit. All you need are some longer allen bolts.

    Some come with external oil filter fitments too, which is a doubly good

    So quite possibly easier and cheaper to source and fit than a cooler.
    The Older Gentleman, Aug 3, 2007
  4. sweller

    Ace Guest


    ..'_/_|_\_'. Ace (brucedotrogers a.t rochedotcom)
    \`\ | /`/ DS#8 BOTAFOT#3 SbS#2 UKRMMA#13 DFV#8 SKA#2 IBB#10
    `\\ | //'
    Ace, Aug 3, 2007
  5. sweller

    sweller Guest

    Well yes, but we are dealing with 30 year old bikes here.
    sweller, Aug 3, 2007
  6. sweller

    JB Guest

    Don't connect the oil cooler to the head oil feed banjo on the crankcase at
    any cost. You'll have to get a special sump modification which allows
    correct take-off pipes to be attached. These were available on an exchange
    basis at one time from CorsaItaliana (Spares GB).
    JB, Aug 3, 2007
  7. sweller

    Hog Guest

    Well as I already said OI PAY ATTENTION AT THE BACK oil cooling does not
    need a thermostat.

    I don't know about the routing questions you ask but I think all B12's have
    oil coolers, not as nice as mine of course, and the breaker should be full
    of them. You may need a friendy shop to make up pipes and connections.

    eBay "Bandit Oil Cooler" there are lots from £8 up to mine item 180145362798
    Hog, Aug 3, 2007
  8. sweller

    Hog Guest

    You are introducing cost implications beyone Swellers tolerance you know
    Hog, Aug 3, 2007
  9. sweller

    sweller Guest

    I know - I read it after I posted.

    Although, a water cooling system doesn't need a thermostat it's desirable
    it's not cooling when it doesn't need to. The same should apply to an
    oil cooler especially when it's the primary cooling system (as it is on a
    sweller, Aug 3, 2007
  10. sweller

    sweller Guest

    It seemed a good idea at the time... Thinking about it there may be oil
    starvation problems as it's on the wrong side of the feed.

    Who are not answering the phone at the moment but I'm not expecting
    plenty cheapness.
    sweller, Aug 3, 2007
  11. sweller

    Hog Guest

    Yess but the whole shabang works so differently and oil has rather different
    thermodynamic qualities if you are using something like a 5w50 Mobil IYSWIM.

    R100RS's have coolers and no thermostats either IIRC
    Hog, Aug 3, 2007
  12. sweller

    JB Guest

    Have a look if you go to the International Guzzi Owners club's V-Twin Rally
    over Aug bank holiday weekend in Ringwood. The biggest Guzzi autojumble
    you've ever seen. I've bought two such sumps there over the years (and far,
    far too many other 'bargain-must-have-or-I-will-surely-die-without' spares).
    This possibly explains the state of my garage.
    The other option is to find a friendly machinist and bore/tap your own sump
    for oil take-off pipe fittings.
    JB, Aug 3, 2007
  13. sweller

    sweller Guest

    That I can do. Do you have a picture or drawings of a modified one?
    sweller, Aug 3, 2007
  14. sweller

    JB Guest

    Don't I just wish. The 2 I bought went straight ot thier new owners (I'd
    been asked to buy them if I spotted any). I didn't have chance to examine &
    dimension them up. I wasn't too complicated though from memory. The photos
    in the Guzzi manual should suffice to work out the oilways to tap into.
    Outlet to cooler should be before the filter (possibly have to put a
    threaded plug into this gallery just before the filter) and the return from
    the cooler back into the gallery the filter is screwed into. 5/8" bore
    braided lines should do the job I reckon.
    I've got to do this very job soon myself for the trike. I've got a cooler
    and lines/unions but haven't got a spare sump unfortunately, and I'm not
    taking the trike off the road while I do the machining.

    JB, Aug 3, 2007
  15. sweller

    Muck Guest

    The left hand exhaust lobe doesn't seem to have the same surface texture
    as all the other ones.
    Muck, Aug 3, 2007
  16. sweller

    wessie Guest

    later boxers have thermostats, don't they?

    IIRC it is one of the differences between the 1100cc and 1150cc R-GS

    wessie at tesco dot net

    BMW R1150GS

    "Wessie is a lovely man with many wonderful qualities" TM Blaney
    wessie, Aug 4, 2007
  17. sweller

    Hog Guest

    No idea never worked on a Beemer made after they abandoned quality control
    Hog, Aug 4, 2007
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