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Last Post: sprink
Posted On: 2 Hours Ago
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1 Week Ago
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XL FORUM TEAM MEMBER
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Join Date: May 2010
Location: Pottstown PA.
Posts: 15,381 Sportster/Buell Model: xlch Sportster/Buell Year: 1960 Sportster/Buell Model #2: 883 custom Sportster/Buell Year #2: '03
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ram jet intake manifolds
were the U.S. made ram jet intake manifolds an improvement over oem? flow wise.
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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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1 Week Ago
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Drag Race Champion
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Join Date: Jun 2016
Posts: 397 Sportster/Buell Model: XLH1000 Sportster/Buell Year: 1977 Sportster/Buell Model #2: 2004 XLH1200Custom Other Motorcycle Model: 2007 FXDB Other Motorcycle Year: 2004
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If I remember correctly, the Ram Jet manifolds had the mounting flanges cast into them. They still had the casting "witness marks" in them, just like the OEM intake's. I wasn't impressed when I saw one. Over the years I've been doing this, when I remove an intake manifold I use a small grinding stone in my air grinder and cut down the internal casting marks. Does it turn it into a race bike . . . hell no. It just removes a simple casting imperfection Does it flow more air????? Maybe, but just makes me feel good to do it.
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1 Week Ago
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XL FORUM TEAM MEMBER
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Join Date: Jul 2008
Posts: 10,971 Sportster/Buell Model: 1200s Sportster/Buell Year: 2001 Sportster/Buell Model #2: xlch Sportster/Buell Year #2: 1974
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actually you will get more bang for the buck doing the exh side.
the inlet runner is SOOOO short, the roughness actually help the charge to mix better.
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5 Days Ago
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XL FORUM TEAM MEMBER
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Join Date: May 2010
Location: Pottstown PA.
Posts: 15,381 Sportster/Buell Model: xlch Sportster/Buell Year: 1960 Sportster/Buell Model #2: 883 custom Sportster/Buell Year #2: '03
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i was hoping to hear from some of the performance motor builders.if they have any experience with these.
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4 Days Ago
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Master Custom Bike Builder
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Join Date: May 2013
Location: Middle O the Mitten
Posts: 3,083 Sportster/Buell Model: XLCH Sportster/Buell Year: 1977
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Quote:
Originally Posted by bustert
actually you will get more bang for the buck doing the exh side.
the inlet runner is SOOOO short, the roughness actually help the charge to mix better.
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Yes... so very true
Quote:
Originally Posted by brucstoudt
i was hoping to hear from some of the performance motor builders.if they have any experience with these.
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This was not a Performance upgrade.. IMO it is an excellent replacement for the old Rubber boot manifolds, and as a Plus... they are Strong enough to lift the Engine by them.. However, since I like the CV for the street... I will retain the Newer flange type intake with push on Spigot.. Performance?? ... The Same |
3 Days Ago
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XL FORUM TEAM MEMBER
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Join Date: May 2010
Location: Pottstown PA.
Posts: 15,381 Sportster/Buell Model: xlch Sportster/Buell Year: 1960 Sportster/Buell Model #2: 883 custom Sportster/Buell Year #2: '03
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there's my answer,thanks RP.
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