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Thread: Diesel MotoGuzzi motorcycle

  1. #1
    Join Date
    Sep 2005
    Location
    WA
    Posts
    4,224

    Diesel MotoGuzzi motorcycle

    A friend of mine has made a Moto Guzzi motorcycle into a diesel motorbike.
    It has a 3 cylinder diesel engine and looks like a factory installation (apart from not being a Vee configuration engine)
    I have yet to see any video or details of noise emissions, but I am hopeful of this information being available soon.

    Check it out.
    Click image for larger version. 

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ID:	2052Click image for larger version. 

Name:	MotoGuzzi Diesel 2.jpg 
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ID:	2053
    Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

    Current Vehicles in stable:
    2000 Ford Courier Crew Cab 2.5L Turbodiesel on Blended veggie oil.
    '2014 Toyota Prius (on ULP)


    Previous Vehicles:
    '90 Mazda Capella. (2000 - 2003) My first Fatmobile. Converted to fun on veggie oil with a 2 tank setup. Died when supercharger stuck at max boost for weeks. Stretched head bolts.
    '80 Mercedes 300D. 2 tank conversion [Sold]
    '84 Mercedes 300D. 1 tank, no conversion. Replaced engine with rebuilt OM617A turbodiesel engine. Finally had good power. Donor for current Fatmobile coupe. (body parted out and carcass sold for scrap.)
    '99 Mercedes W202 C250 Turbodiesel (my darling Wife's car)[sold]
    '98 Mercedes W202 C250 Turbodiesel (my car)[sold]
    Parts Car C220 1993 SOLD.
    '85 Mercedes Benz W123 300CD Turbodiesel single tank using 95% used cooking oil and 5% to 10% misfuel (where someone had filled diesel vehicle with petrol).
    '06 Musso Sports Crew Cab. Running on used cooking oil with 5% to 10% misfuel. [Head gasket blew!]


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    Adding images and/or documents to your posts


  2. #2
    Join Date
    Dec 2007
    Location
    South Australia
    Posts
    1,174

    Re: Diesel MotoGuzzi motorcycle

    Looks very neat, can't wait to hear some specs and details.
    Johnnojack
    4WD Isuzu Jackaroo 3.1 180000km on WVO,(2018) 2 tank home built system 6 solenoids heated filter, fuel line and tank pickup for thicker oil. Mk. 9 version now and no changes planned
    Mercedes W201 190D 1986 model: no fuel mods except bigger fuel line from tank, running blend of 90% oil 10% petrol 5000km to date. Motor purrs but car has electrical gremlins

  3. #3
    Join Date
    Sep 2009
    Location
    Brisbane (North Side)
    Posts
    736

    Re: Diesel MotoGuzzi motorcycle

    That's very cool indeed.

    A big vertical stack exhaust with a flap on it would look the goods though.... Just sayin, that's all
    Regards,

    Cade.

    2006 Landcruiser HDJ100 (1HD-FTE) 20,000 on bio
    2006 Ford Courier(WLT Motor), 10,000 on bio
    2002 Landcruiser HZJ105r (1HZ motor) 250,000 on bio (sold)
    2006 Mazda B2500 (WLT motor) 80,000 on bio (sold)



  4. #4
    Join Date
    Sep 2005
    Location
    WA
    Posts
    4,224

    Re: Diesel MotoGuzzi motorcycle

    My email conversation thus far:
    John,
    Well Done!!!!
    How is the bike for vibration and noise with a diesel under the tank?

    The whole bike looks like it was built with that engine in there from the
    factory.
    .....
    Tony
    Reply from John:
    I've let a few friends ride it, so I was more than surprised to learn
    how very quiet it is when heard from "outside". While riding it at
    speed though the rider is exposed to the very noisy intake "honk".
    The air intake filter is next to the rider's right knee and needs a
    cover that redirects the sound. Since it has no windscreen, the air
    rushing past the helmet is the loudest sound heard at higher speeds.
    At idle the whole bike vibrates, reminding me of British Twins I've
    had, but off idle it smooths out nicely. The hand grips buzz enough
    on the highway to leave my hand tingling after a half hour ride to
    work, just like my old Triumphs. Unlike them, the mirrors are quite
    steady.
    Performance is ok, feeling quite comfortable at 55-60mph, which is
    normal highway speed for most places. It seems to have a top speed of
    just 65 though, which isn't fast enough to keep up with our freeway
    traffic. The governor limits top speed to 3850rpm, even though the
    redline is 4100. It's tempting to reset the injection pump stop to
    4100 rpm, which would give it a top speed around 70 mph, which is
    normal freeway speed, but there are some other things to try first.
    The connection between flywheel and transmission is via torque
    converter, which may not be getting enough oil from the Tuthill pump I
    chose. The stock pump is built into the Moto Guzzi engine, so I had
    to use a different one, but there were no performance figures for the
    original one other than 30-35 psi operating pressure. That is
    actually back pressure between the pump and torque converter, which is
    flow rate dependent, and I don't know the original flow rate, so I
    guessed. If it isn't getting enough fluid, it will "slip" more. To
    test the theory I "only" need to connect a pressure gage somewhere in
    the fluid circuit to monitor while riding. If it turns out to have
    low pressure, then it would be a simple remedy to buy the next larger
    pump.
    If the pump is working properly, then I have little option but to
    change the gear ratio, or more likely to be satisfied with a 65 mph
    top speed. Changing ratios isn't easy with a shaft-driven design, but
    the tranny is a very simple 2-speed unit. It might be possible to
    swap in a different pair of gears for "high". The engine certainly
    has plenty of power to pull taller gears, and such change might even
    improve the mileage, which I've measured at a bit more than 60 mpg
    (26+ km/L). The stock bike got 45 mpg, so the 33% improvement is
    about right.
    The stretched frame works fine with my long arms, especially on the
    highway with the wind trying to push me back. It's a very neutral
    riding position. The conversion added about 150 pounds to the bike,
    which is a normal load if carrying a passenger or camping gear or
    police equipment (they were popular with police departments).
    Steering geometry changed significantly, but not in any dangerous way
    - it feels "heavy" and requires stronger countersteering inputs than
    usual, but nothing difficult to deal with. Brakes are terrific, and
    the bike feels very solid. I had been concerned that my modifications
    would create handing problems, but it's just "different" rather than
    "dangerous".
    ..........
    Regards,
    John
    John,
    I hope you don't mind, but I have put photos of your bike onto
    http://www.biofuelsforum.com/threads...zzi-motorcycle and
    would like to put your email (below) and some specifications on there also.
    If you are happy with this, please send me the specifications (diesel engine
    model, etc), or post there yourself.

    Again, Well Done!

    Tony.
    Permission granted. specs:
    Chassis and tranny are 1976 Moto Guzzi Convert.
    Engine is current issue Diahatsu 950D: 3 cylinder, 28 hp @3600 rpm
    (nominal design point).
    Fuel tank is home-made but copies the original angular design. It
    holds 8 gallons (540 miles between fillups).
    Chassis stretched 5 inches.
    All work done by myself. Hard parts were modifying the chassis, a new
    flywheel, the fuel tank, wiring, plumbing (water cooled, remember?),
    tranny oil pump and cooler, etc... It has taken over 6 years of part
    time work.
    Engine cost $3200, bike cost $2500 but I sold the engine for $1000.
    There's probably at least another $1000 in miscellaneous bits and
    pieces, and uncounted hours.
    It's accumulated only about 200 miles so far, so early days, but
    returned a bit better than 60 mpg vs 45 original. It might benefit
    from taller gearing, but a top speed of 65 mph at 3850 rpm (max
    factory setting for the engine, despite a 4100 rpm redline) is
    sufficient for most daily uses. Most freeway motorists cruise at
    70+mph, so a 65 mph motorcycle would block traffic, with distressing
    consequences. It has plenty of power to go faster, but lacks the gear
    ratios. The Convert has taller gears than the two BMW machines I'm
    familiar with that were converted using the same engine, but the
    torque-converter robs it of about 20% resulting in the same top end.
    Eventually I may decide to experiment with different gearing but for
    now it works well enough.
    I do not intend to ever put pump diesel into it. I've been
    homebrewing biodiesel since 1999. My friends may be right in that it
    might be ruining my engines. Only time will tell. The rest of the
    vehicles keep wearing out before their engines do so I can't tell yet.
    I'd be happy to answer any questions - contact me at
    jousterATgcpower.net. Tony can tell if it's necessary to add a .US if
    that's needed.
    Cheers,
    John
    Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

    Current Vehicles in stable:
    2000 Ford Courier Crew Cab 2.5L Turbodiesel on Blended veggie oil.
    '2014 Toyota Prius (on ULP)


    Previous Vehicles:
    '90 Mazda Capella. (2000 - 2003) My first Fatmobile. Converted to fun on veggie oil with a 2 tank setup. Died when supercharger stuck at max boost for weeks. Stretched head bolts.
    '80 Mercedes 300D. 2 tank conversion [Sold]
    '84 Mercedes 300D. 1 tank, no conversion. Replaced engine with rebuilt OM617A turbodiesel engine. Finally had good power. Donor for current Fatmobile coupe. (body parted out and carcass sold for scrap.)
    '99 Mercedes W202 C250 Turbodiesel (my darling Wife's car)[sold]
    '98 Mercedes W202 C250 Turbodiesel (my car)[sold]
    Parts Car C220 1993 SOLD.
    '85 Mercedes Benz W123 300CD Turbodiesel single tank using 95% used cooking oil and 5% to 10% misfuel (where someone had filled diesel vehicle with petrol).
    '06 Musso Sports Crew Cab. Running on used cooking oil with 5% to 10% misfuel. [Head gasket blew!]


    Searching the Biofuels Forum using Google
    Adding images and/or documents to your posts


  5. #5
    Join Date
    Sep 2005
    Location
    WA
    Posts
    4,224

    Re: Diesel MotoGuzzi motorcycle

    I responded to John:
    John,

    Thanks for your support for our enthusiastic website members. I will post
    the details tonight.

    I believe that the only reason that you cannot get more speed from the
    current setup is that the petrol engine will (probably) rev out past 7K RPM
    and the diesel would be unlikely to rev past 4K RPM. The transmission pump
    is doing what it needs to do, gears are most likely the best option if you
    want more speed.

    ........

    Tony
    Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

    Current Vehicles in stable:
    2000 Ford Courier Crew Cab 2.5L Turbodiesel on Blended veggie oil.
    '2014 Toyota Prius (on ULP)


    Previous Vehicles:
    '90 Mazda Capella. (2000 - 2003) My first Fatmobile. Converted to fun on veggie oil with a 2 tank setup. Died when supercharger stuck at max boost for weeks. Stretched head bolts.
    '80 Mercedes 300D. 2 tank conversion [Sold]
    '84 Mercedes 300D. 1 tank, no conversion. Replaced engine with rebuilt OM617A turbodiesel engine. Finally had good power. Donor for current Fatmobile coupe. (body parted out and carcass sold for scrap.)
    '99 Mercedes W202 C250 Turbodiesel (my darling Wife's car)[sold]
    '98 Mercedes W202 C250 Turbodiesel (my car)[sold]
    Parts Car C220 1993 SOLD.
    '85 Mercedes Benz W123 300CD Turbodiesel single tank using 95% used cooking oil and 5% to 10% misfuel (where someone had filled diesel vehicle with petrol).
    '06 Musso Sports Crew Cab. Running on used cooking oil with 5% to 10% misfuel. [Head gasket blew!]


    Searching the Biofuels Forum using Google
    Adding images and/or documents to your posts


  6. #6
    Join Date
    Dec 2007
    Location
    South Australia
    Posts
    1,174

    Re: Diesel MotoGuzzi motorcycle

    Has anyone read Paul Carters book 'Is that thing diesel?'

    He has written a few interesting books. He took a diesel bike built by Adelaide University on a trip around Oz. He also had great trouble with the vibration through the handgrips. Turned into a bit of an ordeal rather than a fun trip. Read the book if you can get it, ABC shop or local library.
    Johnnojack
    4WD Isuzu Jackaroo 3.1 180000km on WVO,(2018) 2 tank home built system 6 solenoids heated filter, fuel line and tank pickup for thicker oil. Mk. 9 version now and no changes planned
    Mercedes W201 190D 1986 model: no fuel mods except bigger fuel line from tank, running blend of 90% oil 10% petrol 5000km to date. Motor purrs but car has electrical gremlins

  7. #7
    Join Date
    Sep 2005
    Location
    WA
    Posts
    4,224

    Re: Diesel MotoGuzzi motorcycle

    JJ,
    IIRC, He used a single cylinder industrial diesel, no wonder it shook so much. he also had a continuously variable ratio belt drive, which caused no end of trouble.
    He nearly killed himself on it though.

    Regards,
    Tony
    Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

    Current Vehicles in stable:
    2000 Ford Courier Crew Cab 2.5L Turbodiesel on Blended veggie oil.
    '2014 Toyota Prius (on ULP)


    Previous Vehicles:
    '90 Mazda Capella. (2000 - 2003) My first Fatmobile. Converted to fun on veggie oil with a 2 tank setup. Died when supercharger stuck at max boost for weeks. Stretched head bolts.
    '80 Mercedes 300D. 2 tank conversion [Sold]
    '84 Mercedes 300D. 1 tank, no conversion. Replaced engine with rebuilt OM617A turbodiesel engine. Finally had good power. Donor for current Fatmobile coupe. (body parted out and carcass sold for scrap.)
    '99 Mercedes W202 C250 Turbodiesel (my darling Wife's car)[sold]
    '98 Mercedes W202 C250 Turbodiesel (my car)[sold]
    Parts Car C220 1993 SOLD.
    '85 Mercedes Benz W123 300CD Turbodiesel single tank using 95% used cooking oil and 5% to 10% misfuel (where someone had filled diesel vehicle with petrol).
    '06 Musso Sports Crew Cab. Running on used cooking oil with 5% to 10% misfuel. [Head gasket blew!]


    Searching the Biofuels Forum using Google
    Adding images and/or documents to your posts


  8. #8
    Join Date
    Sep 2005
    Location
    WA
    Posts
    4,224

    Re: Diesel MotoGuzzi motorcycle

    Another email from John,
    The original engine redlined at 6500 rpm,
    giving a top speed of 110 mph. That means that the 60 mph at 3600 is
    normal. I'll be putting the word out within the club for a used
    transmission to play with. Wouldn't it be nice if it allowed some
    creative rearrangement of standard gears?
    ....................
    John
    Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

    Current Vehicles in stable:
    2000 Ford Courier Crew Cab 2.5L Turbodiesel on Blended veggie oil.
    '2014 Toyota Prius (on ULP)


    Previous Vehicles:
    '90 Mazda Capella. (2000 - 2003) My first Fatmobile. Converted to fun on veggie oil with a 2 tank setup. Died when supercharger stuck at max boost for weeks. Stretched head bolts.
    '80 Mercedes 300D. 2 tank conversion [Sold]
    '84 Mercedes 300D. 1 tank, no conversion. Replaced engine with rebuilt OM617A turbodiesel engine. Finally had good power. Donor for current Fatmobile coupe. (body parted out and carcass sold for scrap.)
    '99 Mercedes W202 C250 Turbodiesel (my darling Wife's car)[sold]
    '98 Mercedes W202 C250 Turbodiesel (my car)[sold]
    Parts Car C220 1993 SOLD.
    '85 Mercedes Benz W123 300CD Turbodiesel single tank using 95% used cooking oil and 5% to 10% misfuel (where someone had filled diesel vehicle with petrol).
    '06 Musso Sports Crew Cab. Running on used cooking oil with 5% to 10% misfuel. [Head gasket blew!]


    Searching the Biofuels Forum using Google
    Adding images and/or documents to your posts


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