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3rd December 2020
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Senior Custom Bike Builder
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Join Date: Jan 2011
Location: Paradise
Posts: 2,759 Sportster/Buell Model: xlch Sportster/Buell Year: 1977 Other Motorcycle Model: BMW K-1200/GT Other Motorcycle Year: 2004
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S&s
Anyone know where I can get an S&S backing plate for a Keihin BD (butterfly) carb? Back around 1980 they ran dyno tests on an S&S air cleaner assembly on a stock shovel and picked up 5 rear wheel horses with no other change..
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If loud pipes save lives....imagine what learning to ride will do for you.
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3rd December 2020
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Senior Master Custom Bike Builder
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Join Date: May 2010
Location: Pottstown PA.
Posts: 14,285 Sportster/Buell Model: xlch Sportster/Buell Year: 1960
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''assembly'' the outer cover of their air cleaner contributes quite a bit to the total effect.if you've seen one you'll know what i mean.
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72 1000cc barrels and heads, s&s 41/2'' flywheels, sifton cams, s&s super B w/ zippers thunderjet w/yost powertube, andrews gears,and shafts, competition engineering kevlar wet or dry clutch, 72 oil pump, morris magneto w/auto advance and single fire module, cycle electric generator w/electronic regulator,73 cu.in.
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4th December 2020
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XL FORUM TEAM MEMBER
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Join Date: Jul 2015
Posts: 269 Sportster/Buell Model: XLH Sportster/Buell Year: 1982
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For an actual S&S piece you'll probably have to hit ebay. The backing plates for the Super B fit Keihin carbs. If you want to go repro, V-Twin makes one that's a pretty good copy. I'm running one and like it.
https://www2.vtwinmfg.com/chrome-tea...-assembly.html |
4th December 2020
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Senior Custom Bike Builder
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Join Date: Jan 2011
Location: Paradise
Posts: 2,759 Sportster/Buell Model: xlch Sportster/Buell Year: 1977 Other Motorcycle Model: BMW K-1200/GT Other Motorcycle Year: 2004
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Quote:
Originally Posted by brucstoudt
''assembly'' the outer cover of their air cleaner contributes quite a bit to the total effect.if you've seen one you'll know what i mean.
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I have an S&S shorty and know what you mean....they put a lot of work into the shape of the backing plate and the cover to do what the car guys did with engines like the L-88 with a huge donut shaped assembly that straightened out the air flow....the last Mustang I built with a Flex-A-Lite SS fan pushed air over the carb so hard at idle you could not set the mixture with the air cleaner off unless you placed an 18x30 inch board in front of the carb...
I found a knock-off of the S&S and I'll probably use that with the real S&S cover after I get past Christmas... |
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