The XLV750R Thread

Discussion in 'Land of the Rising Sun: ADV Bikes from Japan' started by sharkey, Sep 27, 2007.

  1. Schelbi

    Schelbi Been here awhile

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    Are you sure it is a NTV engine? A few years ago I met a guy from Belgium with a NTV swingarm and wheel in a XLV at the Swiss XLV meeting .
    But he had the stock XLV750 engine. Maybe we are talking about the same guy?

    If it's possible to put a NTV650 engine in the XLV750 frame I would like to hear more about it!

    Greetings,
    Schelbi.
  2. Two Plugs

    Two Plugs Long timer

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    Pics can be found on one of my photogaleries:
    www.varaderointernational.smugmug.com

    I can't access them from the office, but the pics are made at the 20th XLV750R anniversary meeting in Switzerland, 2003.
    The bike was actually completely chopped. In my opinion, the Belgian owner demolished a perfect looking classic bike.
  3. Schelbi

    Schelbi Been here awhile

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    2003? Ok I've been there, too.
    I'm sure you are taling about this bike:
    [​IMG]

    The engine is stock XLV750. Only swingarm and rear wheel are from NTV650.

    And the look is indeed terrible!
  4. Two Plugs

    Two Plugs Long timer

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    Idd Schelbi, that's the one! And yes, HORRIFYING don't you think...? During a short summer rainshower he had to put plastic coffee mugs in the exhaust to prevent flooding...

    We where participating at that particular meeting on a Varadero (me) and a Transalp (my Mrs)
  5. Two Plugs

    Two Plugs Long timer

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    Finally and with the help of a mechanic, his workshop and his tools I've picked up the pieces where I left the restoration of the XLV 3 years ago... With my trusty black XLV750RF as a model to figure out how to put the last pieces of the puzzle together...

    I'm still not giving a forecast when the Red One is back on the road though, but things look good... ;)

    Some pics to share:

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    The carburettor is a different story. You guys might know that I did a cleaningjob with the original unit last year. But... it became that clean, that the corrosion of the material caused leakage of fuel along the seals. Finding another carburettor was more difficult as I thought. A guy in France who offered all kinds of XLV parts on the French E-bay, turned out to be a scammer. For other units, they wanted to have a top-price if they where made out of solid gold.

    The only proper proposal I received, came from ADV-collegue member Bell driver (thanks again, mate!) but lucky for me... I found a replacement just around the corner... In the carburettor of a '83 Honda 700 Shadow.

    The unit is practically the same as the original XLV unit, but the serial number is different. Most parts from the XLV carburettor can be exchanged with the shadow unit and besides the serial number, the only difference I could find was that the guidance of the choke cable is a little more narrow as on the XLV.

    The serial nr of the XLV unit is ADA (A) VF, the serial number of the Shadow unit is 7AA (A) UI7. Its a lot easier to get old shadowparts than parts for the XLV, cause in the '80s of the last century the (US) Shadow was brought in to The Netherlands from the United States by shiploads! I guess, same goes for engine parts... But I'm not sure on that.

    [​IMG]
    Left with orange label the Shadow unit, right the XLV unit.
  6. Two Plugs

    Two Plugs Long timer

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    Taking the final barrier is most difficult ... but for the first time in years, the XLV runs again. Sort of… But ... uno grande problema.

    The valves of the rear cylinder head work. Compression is fine.
    But ... the front cylinder gives a problem. The valves are remaining in open position. It's like if the valves are somehow 'deeper' in position as supposed to be.

    The engine has been completely disassembled for the re-paint, and all bits of pieces are re-assembled… But what could we have missed?

    Could it be possible that the hydraulic tappets are contaminated with sludge? Can they be cleaned, or is replacing the only option? Maybe another cause?

    Advice is welcome ...
  7. Two Plugs

    Two Plugs Long timer

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    The hydraulic tappets where to blame; procedure was correctly but the tappets shown signs of wear so the valves where positioned to low in the cylinder.
    Compression on the front cylinder is now an excellent 0.3 (according to the workshop manual 0-1,2 is required; so I still have some room to play). I've replaced the
    hydraulic tappets on the front cylinder and just out of precaution, I replaced the tappets of the rear cylinder too.

    I'll be travelling the UK and Ireland soon (almost the full month of May) but I hope to get the bike up and running next June. Finally! ;)



    PS... its so quiet here... Anyone at home? :eek1
  8. omeoxlv

    omeoxlv Been here awhile

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    Hi Bernard,
    well done on getting that sorted out. Just so there is a bit of "noise" I;ll tell you about my "amazing discovery" last week.
    One of my xlv's is very tired in the motor and hadnt run for ages as it needed a starter clutch. I had bought one a couple of years back and finally got around to putting it in and got the bike running again.
    This bike has a custom exhaust from the engine pipes back and the aluminium mufflers are removable but I had never done so (no reason) They are louder than the standard pipes on the other bike so I reasoned they were freer flowing.
    Not sure why but I thought I would take the mufflers off. And then started the bike.
    Shocked I was!!!
    The most amazing note!!!
    Noone that I have seen has ever mentioned this on the xlv forum, or this one.
    It was so good I had to take the bike for a run (or two). The crackle, the thud under power, no backfiring, honest it is unreally good.
    The poor old thing seized though.
    Am gunna have to fix it or take the standard off the other one.
    This is a bike I want to ride around just for the note. Get a set of almost unbaffled slip ons to make it look complete.
    It went better too, good pickup.
    There you go
    cheers Graeme
  9. Old fart

    Old fart Keen AG100 rider

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    Yool get booked Graham :evil I have rebuilt a few sets of XLV pipes the last few years, I usually make up new baffles along the lines of the original and have a bigger outlet of around 30mm. The sound is very nice but not too loud, seems to have more torque than the original and a whisker more power.
    [​IMG]
    [​IMG]
    Put the original heat shields back on.
  10. Schelbi

    Schelbi Been here awhile

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    In case somebody in Europe needs a XLV750R for restoration or spare parts I want to sell one of my XLV750:


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    I have no time to do the planned rebuild. The XLV has not been running the last few years. I don't know if it is running but I tried it with jumper cable. The engine cranks but is not firing up.
    - with German title
    - front brake is missing
    - tank paint job is not stock
    - rear turn signals not original
    - right front turn signal broken
    - one little crack in seat
    - new battery needed
    - caburator needs cleaning
    - stock exhaust looks good. Only some small rust spots on the chrome covers.
    - front brake disc looks like new

    asking for 1100€

    Someone interested?

    Schelbi.
  11. omeoxlv

    omeoxlv Been here awhile

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    Bike looks nice, that seat is very comfy I would think. Sure better than the standard. Good job on pipes!
    Yes, I wouldnt ride it in town! But shit its a great sound!
    Cheers Graeme
  12. michaelmiata89

    michaelmiata89 n00b

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    Hey Schelbi,

    Nice to see you here as well:-)

    Kind regards,
    Michaelmiata89

    [​IMG]

    [​IMG]

  13. Schelbi

    Schelbi Been here awhile

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    Hey,
    It's cool to see you here. Nice Twin and great Avalanche :clap
    I have a Twin, too. A RD04.
  14. johns

    johns Been here awhile

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    I don't know if a NTV engine would fit, but the XLV750 is not the same or based on the NTV engine. Early '80's Honda came with a couple of V engines. The 750 (45 degrees between the cilinders) and the 500 (50 something degrees). The XLV has basically the same engine as the VT750C/Shadow. The 500 came to the VT500Shadow, the VT500Ascot and the VT500E, which is some kind of sports touring bike.

    The 500 develloped into the 600/650 transalp/NTV engine. Maybe even the 700 Transalp engine. Anyway, the XLV750 is different.
  15. Two Plugs

    Two Plugs Long timer

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    Its possible to fit an NTV Revere engine (incl shaft) in the XLV. I have seen the (Belgian) result at the 20th XLV750R anniversary meeting in 2003, in Switzerland.

    Question is... would you really want to destroy a classic as the XLV with such an operation... The NTV engine is more heavy (liquid cooled) and less powerfull.
  16. Schelbi

    Schelbi Been here awhile

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    I'm sure you are talking about this one:

    [​IMG]
    [​IMG]


    This is the stock XLV750 engine! No NTV650.
    Only swingarm and rear wheel is from NTV650.
  17. Two Plugs

    Two Plugs Long timer

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    Yes, that's the one. A horrible mutulation... :puke1

    No wonder the owner attended to the meeting, riding to Switserland by car & trailer... :lol3
  18. Two Plugs

    Two Plugs Long timer

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  19. Two Plugs

    Two Plugs Long timer

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    Finally, it happened... the XLV750R on which I have been working for the last 5-6 years (with some delay... started in 2006, posting #43 ) is now close to be finished. The engine has run for the very first time... with a red jerry can as temporally fueltank.. and it did run sooo smooth!

    A few minor things remain as last final frontier:

    - Re-installing the fuel tank and fuel hoses
    - Re-installing all the body panels and saddle
    - And... carefully run-in the newly reassembled engine, taking it easy for the first 1.000-1.500 km!

    I'm planning to have a 'first flight' by the end of this month / early August.
  20. Schelbi

    Schelbi Been here awhile

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    Hello Bernard,

    I don't speak Dutch but as far as I understand the seller wrote nothing about the fork.
    Looks like a Honda CR-fork with stock XLV wheel, brake caliper and brake disc to me.

    Can please ask him about some details of the conversion? And what he did to the rear suspension (in case he did something)?

    Thanks.

    Schelbi.