bigbossjake Posted April 26, 2012 Report Share Posted April 26, 2012 I have a 2 banshees I drag race on 1/8 mile asphalt. 1 is for drag racing only, and it set up this way (+12 swingarm and solid struts, it is about an inch off the ground). It has all of the usual motor work with cpi out of flame exhaust and jetted stock carbs. It runs 7.2 seconds at 98-100 mph. My other banshee is mainly drag raced, but is set up for all types of riding (stock swingarm and shocks). It has pro circuit exhaust, 370cc cylinders, 17cc cool head, Paul Turner porting, and 35mm Keihin carbs with 165 main jets. It runs low 9 second times at 82 mph. I feel like it should do more. Both banshees are running 110 race gas with open filters. Do i have too much carb or too big of a jet on the 2nd banshee? I was thinking about switching the carbs on them, but wanted to ask some knowledgable people. The drag only banshee runs so good that I don't really want to mess with it. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted April 26, 2012 Report Share Posted April 26, 2012 If your porting is any good on your drag banshee then your stock carbs are killing that motor. On the all purpose bike, 35's are ok if there's porting and exhaust to support it. No reason to have two drag bikes....unless that's ALL you do. I'd put the stock carbs on the all around bike...although I still hate stock carbs. 28mm to 33PWK is a good set. You say Paul Turner porting and 17cc domes. What elevation are you at? If you're less than 2500 feet those 17cc domes could be holding you back a bit. Quote Link to comment Share on other sites More sharing options...
bigbossjake Posted April 26, 2012 Author Report Share Posted April 26, 2012 I am below 2500 ft of elevation. What size domes do you recommend? I don't only drag race, but this time of the year, they pay 100% payout at the drag strip. I have 1st place wrapped up, but I would like to win 2nd also with the other banshee so I can make more money. There is a piece of crap 750 crotch rocket welded to a banshee frame that keeps beating my slower banshee. I need 3-4 more mph and I will have him. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted April 26, 2012 Report Share Posted April 26, 2012 I am below 2500 ft of elevation. What size domes do you recommend? I don't only drag race, but this time of the year, they pay 100% payout at the drag strip. I have 1st place wrapped up, but I would like to win 2nd also with the other banshee so I can make more money. There is a piece of crap 750 crotch rocket welded to a banshee frame that keeps beating my slower banshee. I need 3-4 more mph and I will have him. It is really hard to give you advice without knowing your whole setup. My advice...is going to be very generic. Put a larger dome in there, 18 or 19 cc and work on the timing. With timing, when you find the spot where your ET doesn't change but your MPH drops...you went too far. Quote Link to comment Share on other sites More sharing options...
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