Thack82 Posted February 16, 2012 Report Posted February 16, 2012 I have a 2004 Banshee with a built 392cc 68mm Serval Cub. I mostly Trail Ride and I occasionally run a Hare Scramble. My complete set up is set up for Low-Mid Power right now except for my gearing and Curves #3 and #4 on my Dynatek Adjustable CDI Box. The set up I've put together works great but I'm always looking for more power. Do you guys think I would gain any if I bought a set of 30mm Flat Slides and sold my Keihin "D" Slide 28mm Carbs? What brand do you guy's personally think work best on the Banshee Keihin or Mikuni, and what about the OKO's are they Junk? I would like to stay around 30mm-32mm because I don't want to give up any of my low end lugging torque. The way I see it my Banshee didn't loose any low end jumping from the stock Mikuni 26mm Round Slides to the 28mm Keihin "D" Slides but it showed a good gain in the mid and top pull. I figured the faster velocity associated with a Flat Slide Carburetor vs a "D" Slide Carburetor would help me keep my low end power and gain even more power in the mid and top. It's just a thought, what do you guys think? 2004 Yamaha Banshee XC/Trail Quad ----------------Engine------------- Cylinders: Polished 392cc Serval Cub Crank: Hotrods Forged Replacement Pistons: Trinity Exclusive High Compression Forged Pro-Lite Pistons Port Work: F.A.S.T. Play Port Timing: +4° Plugs: NGKX Iridium Spark Plugs Wires: Accell 8.8mm Racing Spark Plug Wires Reed Cages Chariot Billet Cages, with .5 inch Billet Reed Spacers Reeds: Boyesen Power Reeds Intakes: 28mm Pro-Design Billet Intakes Boost Bottle: Pro-Design Billet Boost Bottle Ignition: Dyna-Tek Performance Coil, Dynatek FS CDI (4) Curve with Selector Switch. Stator: Electro-Sport High Output 250 Watt Stator Flywheel: RM-Stator High Output Flywheel (Stock size and weight with stronger magnets) Carburetors: Keihin 28mm PWK "D" Slide Carburetors (160 DG Main Jets and #52 Pilots) Exhaust: Paul Turner Mids and Fat Boy II Silencers Air Intake: Modded OEM Air Box With Pro-Flow Billet Adapter, EHS/Outerwears Lid and Snorkel Booty Head: Trinity Stage IV Cool Head with 21cc Domes Cooling Modifications: 30% Bigger Aluminum Radiator, Mod Quad Billet Water Pump Cover/Plate Housing and Impeller, Mod Quad 2" Inline Coolers/One with Temp Gauge, Mull Billet Water Pump Gear, Red ASI Silicon Hoses, CV-4 High Pressure Radiator Cap * Fine Tuned and Built by WPR "WITHROW POWERSPORTS" Lubricants & Fuel Used: (Ounces/Gallon 110 Octane Torqo Race Fuel Klotz Super TechnoPlate Full Synthetic 20% Caster 2 Stroke Oil (32/1) Marvel's Mystery Oil (2/1) Blue Engine Ice with Royal Purple's "Purple Ice" Quote
nastyracing Posted February 16, 2012 Report Posted February 16, 2012 28 mm pwk only way to go oko r junk and mikuni i wouldnt even mess with. love my pwk n should have larger carbs but will not change them love that lowend snap have been kicking around sending my 28mm to be bored to 30mm but thats the tops il ever do trust me you will be very happy with 28pwk . Quote
Thack82 Posted February 16, 2012 Author Report Posted February 16, 2012 28 mm pwk only way to go oko r junk and mikuni i wouldnt even mess with. love my pwk n should have larger carbs but will not change them love that lowend snap have been kicking around sending my 28mm to be bored to 30mm but thats the tops il ever do trust me you will be very happy with 28pwk . Thats what I have on my Banshee now and I like them, I just thought a bigger Carburetor set up might benefit my set up more. When I had Jeff at F.A.S.T. get the Top End Set Up together for me he said that most of the guys that he built Serval Cubs for ran aether Stock Mikuni 26mm Carburetors or Keihin PJ 34mm Carburetors. I think 34's would be to big for my type of riding. I know this might sound stupid but I'm going to ask anyway, is there a bigger aftermarket Flat or "D" Slide Carburetors that are set up like the Stock Mikuni 26's with the Single Choke Knob and a Cross Over Tube? Quote
sstaton1983 Posted February 16, 2012 Report Posted February 16, 2012 (edited) if your not into all top end power like drag racing i would stick with what you got.my 4 mill made 74hp on stock carbs and the throttle response was great.I switched up to pwk 33s and can feel a little gain on top but the bottom end lags. Edited February 16, 2012 by sstaton1983 Quote
421alkybanshee Posted February 17, 2012 Report Posted February 17, 2012 Just a thought but what about a single carb setup? For your trail riding, maybe that would be best for ya Quote
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