Author Topic: xz850  (Read 270 times)

tremalzo

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xz850
« on: June 23, 2018, 02:30:58 PM »
Yamaha XZ550 stroker build by Dutch Tuner Cees Fick, 80 x 84 bore/stroke makes about 850cc. Driveshaft drive has been modified to sproket drive.


https://www.youtube.com/watch?v=2CH7A5x6jEI

Rikugun

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Re: xz850
« Reply #1 on: June 27, 2018, 09:57:57 AM »
Vey cool. Looks like some downdraft CV carbs but not sure what they're from? Jetting seems to be right based on throttle response anyway. Sounds good, nice work.
It is far better to grasp the universe as it really is then to persist in delusion, however satisfying or reassuring.  Carl Sagan

jefferson

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Re: xz850
« Reply #2 on: June 27, 2018, 11:53:23 PM »
I think he needs some larger air filters. Looks rather restrictive for a 425cc gulp of air.

QBS

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Re: xz850
« Reply #3 on: July 01, 2018, 08:17:55 PM »
Based on the idle, I wouldn't be surprised if he was running stock cams.  It sounded quite streetable.  It's good to see our engine taken outside of the box.

motoracer8

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Re: xz850
« Reply #4 on: July 16, 2018, 05:49:18 PM »
 I made a 650 out of one, but it was just bore.
83 Vision and 11 others, Japanese, German and British

iain

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Re: xz850
« Reply #5 on: July 17, 2018, 03:33:58 AM »
What pistons did you use

Iain
NZ

motoracer8

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Re: xz850
« Reply #6 on: July 17, 2018, 07:06:16 PM »
 I made the liners from aluminum pipe and them plated. The pistons were custom made by JE.
83 Vision and 11 others, Japanese, German and British

fret not

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Re: xz850
« Reply #7 on: July 17, 2018, 08:01:00 PM »
We used to have a wonderful company in Sacramento (Chromecraft) that would take on small unusual jobs, like building up a crank journal or surfacing and plating fork tubes.  No more.  Now they are an industrial focused business and no longer accept small jobs.  But if you have a fleet of heavy equipment that needs their hydraulic rams re-plated they are the place to go.  Sigh.
Retired, on the downhill slide. . . . . . . . still feels like going uphill!

pullshocks

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Re: xz850
« Reply #8 on: July 18, 2018, 02:54:25 AM »
A lot of info about John Clemens' 650 cc vision engine in this thread.
http://ridersofvision.net/rovforum/index.php?topic=11572.0