Modded a 150 cc single to a 300 cc v-twin

General engine tech -- Drag Racing to Circle Track

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enginehacker
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Modded a 150 cc single to a 300 cc v-twin

Post by enginehacker » Sat Jul 05, 2008 4:11 am

This is an old project i did with my friend BGS.In the lines of millyard and drysdale.Fitted it on a different chassis later.
This is the stock engine.Image
This is the mod
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cheers
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bgs
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Post by bgs » Sat Jul 05, 2008 10:51 am

Yeah.. it was nice fun riding it :)

1989TransAm
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Post by 1989TransAm » Sat Jul 05, 2008 12:53 pm

I love these types of posts. Shows the ingenuity, creativity and working skills people have. Whether or not it is practical is another story with all the good motorcycle motors out there. :D

PackardV8
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Post by PackardV8 » Sat Jul 05, 2008 3:32 pm

Love it, also! However, from a logic and cost-effective standpoint, NOTHING we do to engines on this forum makes any sense. We do it because we love it, because we can and because occasionally, someone pays us to do it.

thnx, jack vines
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Keith Morganstein
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Post by Keith Morganstein » Sat Jul 05, 2008 3:36 pm

Did you use a fork and blade connecting rod arrangement on your creation?

This goes back to the early days of motorcycles. Manufacturers found it easiest to add a second cylinder to their existing single and the many v-twins were produced.

enginehacker
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Post by enginehacker » Sun Jul 06, 2008 5:00 am

Keith Morganstein wrote:Did you use a fork and blade connecting rod arrangement on your creation?

This goes back to the early days of motorcycles. Manufacturers found it easiest to add a second cylinder to their existing single and the many v-twins were produced.
nope ,machined the crank webs and reduced the big end width of the original con rods and used bearings with a shorter cage.So the main bearings distances were maintained.The tricky part was welding warpage recovery on the original crank case,so it saved cost of making a new one.Inspired by the work of millyard and drysdale.
cheers
If you think you have reached the top,then the only way .Down?

Greezer
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Post by Greezer » Sun Jul 06, 2008 9:28 am

Have a nice day
Last edited by Greezer on Mon Jun 29, 2009 2:22 am, edited 1 time in total.

Harte3
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Post by Harte3 » Sun Jul 06, 2008 10:46 am

What Jack Vines said. Ingenuity and "can-do" are priceless.

http://www.bosshoss.net/products.asp

V8 powered bar stool anyone?

http://i144.photobucket.com/albums/r194 ... ol_003.jpg
'83 F150 300, 0.030 over, Offy DP, 4160 Holley 1848-1 465 cfm, Comp Cam 260H. P/P head, EFI exhaust manifolds, Walker Y Pipe, Super Cat, Turbo muffler, Recurved DSII, Mallory HyFire 6a, ACCEL Super Stock Coil, Taylor 8mm Wires, EFI plugs.

bgs
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Post by bgs » Mon Jul 07, 2008 1:03 pm

My God! they are deadly.

miniv8
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Post by miniv8 » Fri Jul 11, 2008 4:40 pm

Mr Enginehacker, I salute you :notworthy:

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