Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! "Very informative and practical." See the trailer 
Cotton or synth sweat-wicking t-shirts with the Horizons Unlimited logo on the front and a snappy slogan (changing every year) on the back.
Show your route on your panniers. Great conversation starter when you meet people on the road!
Motorcycle and travel books to inspire and inform you!
ll 5 DVDs with a custom printed slip case. "The series is 'free' because the tips and advice will save much more than you spend on buying the DVD's."
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| BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only. Questions comparing which bike is best etc go in the "Which Bike" forum. |
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#1
8 Oct 2009
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diesel conversion
there's plenty of info about converting bikes by changing the motor for a diesel, but is there any such thing as converting a petrol engine to run on diesel?
out of interest as much as anything, but a TDI boxer might be fun... cheers, andy.
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www.outforaspin.blogspot.com 
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#2
8 Oct 2009
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I`m certainly no expert, but I am sure diesel engines require much higher compression than petrol ones to facilitate combustion and therefore it would not work. I would also like a diesel bike. There is one commercially available which is Adventure style I seem to remember. I don`t count the Royal Enfield thing by the way.
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This old world keeps spinning round, it`s a wonder tall trees ain`t laying down.
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#3
8 Oct 2009
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Anything is possible -
 Looking at the costs... buy a ready diesel engine instead -  However, if you really want to do it, sure it can be done. Petrol engines use 6:1 to 12:1, diesel engines use 17:1 to 23:1. The flamefront is different so one must use compleatly different pistons and combustion chamber... To best understand what you are embarking on - start with reading: Internal Combustion Engine Fundamentals by Prof John B Heywood at MIT. ISBN: 0-07-100499-8. Guess it costs about 80USD - well worth it and very easy reading - Keeps us posted on your progress! -
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Drive Safely, Albert
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#4
8 Oct 2009
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I recently sold a boat that was powered by a petrol motor that had been commercially converted to diesel, (Watermota Sea Panther) it was a Ford motor with a flat cylinder head and only needed special pistons in order to achieve the desired compression, a custom made timing chest with an extra long camchain driving a rotary injection pump, injectors aimed down the plug holes and away it went, I always thought that the old K series BMW motors might lend themselves to a conversion of this type, even accommodating a turbocharger underneath the engine where all of the exhausts come together, a diesel boxer motor would be interesting.
Stewart
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#5
12 Oct 2009
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cheers
thanks for your interest and replies, guys.
i knew i'd have to change pistons and thought that would suffice as far as combustion chamber. i'm keen for the diesel boxer, not interested in buying another motor and making it fit in the bike. injectors through the plug holes, of course! this idea's been banging around my head for a couple of years now, and may stay an idea for a while longer too. i've got the book on order though...
__________________
www.outforaspin.blogspot.com
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#6
12 Oct 2009
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I think you are looking for something like this.
http://www.dieselbike.net/gordongloverarticle.JPG they don't make them like they used to
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#7
15 Oct 2009
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Diesel BMW's
Enough! This must be blasphemy! No more diesel talk (please!!) Wash your mouth out with soap!
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Tim ('91 R100GSPD) The only baggage you carry should be in the panniers
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#8
15 Oct 2009
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Would love to test a R100PD converted to diesel Tim!
Can you imageon the 30L tank filled with diesel using somewhere around 2-3L/100km instead of about 6L/100km gasolen?! What an operation range one would get - Go for it Andy! K75-1100 diesel - wouldn't that be something?! -  BMW is no longer a beemer producer - they've switched to making "rise-cookers". That -is- sacrilegious! -
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Drive Safely, Albert
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