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17th October 2012
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Senior Bike Builder
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Join Date: May 2006
Posts: 1,919 Sportster/Buell Model: 93 Cubic Inch XLH Sportster/Buell Year: 1975 Sportster/Buell Model #2: XLCH Sportster/Buell Year #2: 1968 Other Motorcycle Model: Softail Deluxe Other Motorcycle Year: 2007
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I think you need 2" pipes for the torque cones, do the XLR pipes come in 2"?
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93 Cubic Inches..3.635 Bore x 4.50 Stroke...Baisley Roller Rockers...Dual Plug Heads Ported With XLR Valves...Chrome Moly Pushrods...Andrews AX Grind Cams .550 Lift...Venolia Pistons...Total Seal Gapless Rings...Balanced S&S Rods & Flywheels...Blitz Steel Barrels...Billet Oil Pump...K&N O2 Sensors...S&S Super E Carb...Crane Fireball Multi Spark Ignition...All Andrews Trans Gears & Shafts...Strociek Billet Trap Door...Barnett Kevlar Wet/Dry Clutch...Motorsport Rear Motor Mount...High Torque Starter...100 Plus HP
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17th October 2012
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Master Custom Bike Builder
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Join Date: Jul 2005
Location: Disinformation Superhighway Exit 48
Posts: 3,288 Sportster/Buell Model: XL883H/1200H Sportster/Buell Year: '96
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Quote:
Originally Posted by fdny37
I think you need 2" pipes for the torque cones, do the XLR pipes come in 2"?
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Based on NRHS Tech Tips, maybe so
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Ol' Big Daddy of the Dirty Ducks MC
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Unlike the Internet, Al Gore DID INVENT Global Warming
Political Correctness never killed any terrorists.
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17th October 2012
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Harley Engineer
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Join Date: Jan 2011
Location: in a screwed up world
Posts: 322 Sportster/Buell Model: xl 1200 Sportster/Buell Year: 01 Sportster/Buell Model #2: xl Sportster/Buell Year #2: 74
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Yes, J&P, dennis kirk, etc.
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17th October 2012
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Senior Master Custom Bike Builder
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Join Date: May 2010
Location: Pottstown PA.
Posts: 5,112 Sportster/Buell Model: xlch Sportster/Buell Year: 1960
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hell yes i,have them in my,1-3/4''drag pipe's. because they were made for evo,exhaust.i,had to turn .040 off the o.d.,in a,lathe,to make them a,tight fit in the pipe's. i,have mine located,right below the exhaust spigot.
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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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18th October 2012
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Senior Bike Builder
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Join Date: Sep 2007
Posts: 1,989 Sportster/Buell Model: Custom Sputhe XR Sportster/Buell Year: 19** Sportster/Buell Model #2: XLCH Sportster/Buell Year #2: 1965
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Check this video out....
S&S drag pipe tuning
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18th October 2012
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Know It All
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Join Date: Nov 2009
Posts: 197 Sportster/Buell Model: 1965 xlrtt replica Other Motorcycle Model: 1986 suzuki gsxr 750
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Cut each end off a cheap 1 3/4" drag pipe baffle (if you are using 1.75" pipes) and spot weld or tack them into the mouth of the pipe. They will look pretty close to the shape of the "torque cones/ar cones" that you usually see advertised.............Davi
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18th October 2012
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Know It All
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Join Date: Nov 2009
Posts: 197 Sportster/Buell Model: 1965 xlrtt replica Other Motorcycle Model: 1986 suzuki gsxr 750
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Check out the middle baffle.........Davi. |
18th October 2012
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Senior Chief Know It All 2nd Class
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Join Date: Dec 2011
Posts: 1,451 Sportster/Buell Model: XLCH Sportster/Buell Year: 1970 Sportster/Buell Model #2: Sportster Sportster/Buell Year #2: 69 Other Motorcycle Model: Sportster Other Motorcycle Year: 70
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Chevelle,
I have a problem with the test done by S&S in the video on the baffles, I have run drages with baffles many times and have never had the problem that they showed here. The baffles they used they may as well have shoved a potato up the exhaust pipe as to have put those baffles in. I have run several different lengths of baffles and the best performance I have gotten was with the 8 inch in the style shown on the bottom of Daves pic.
There was a slight drop in power at around 24 to 2600 RPM but overall not much different than the same motor with stock mufflers or stock mufflers with a 1" hole drilled through them, certainly not the drop or just flat out choked out RPM that S&S shows.
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13th December 2012
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Harley Engineer
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Join Date: Dec 2008
Posts: 335
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You can't have it both ways
Straights are designed to operate at from 4K to 6K and beyond depending on the cams. When ridden on the street, the bike falls flat on its face until you hit 4 grand and then it goes like hell. A stock sized bike at the drags is normally revved up to about 6K and when the last light comes on, you feed in the clutch. The engine never gets below 4 so it performs well. On the street you will enjoy the ride a lot better when you are having real decent power from 2K on through the power band. You will win more street races with a set of stock 65 baloney cuts than with straights and you'll spend a lot less time watching for cops. I don't know if anyone makes a real baloney cut clone and the real ones were hard to find 30 years ago, but looking through a real one has a concaved cup shape with generous holes in it, that's all. The 66 torpedo ones were much more restrictive. The best part is the cops will more than likely pay no attention to a set of baloney cuts but will write the straights up every time.
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13th December 2012
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Senior Master Custom Bike Builder
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Join Date: May 2010
Location: Pottstown PA.
Posts: 5,112 Sportster/Buell Model: xlch Sportster/Buell Year: 1960
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drag pipe's.anti-reversion cone's at the head,lollipop's.no muffler's required. modified 8'' baffle's,optional.
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