Thumper Club Forum
Technical => Bike Problems/Questions => Topic started by: guest1703 on December 19, 2013, 03:00:29 PM
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Hi all
Do I need to do any adjustments to the needles or something like like, if I decide to remove my air filter box and replace with direct intakes?
Best
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the air box is nearly as vital as the exhaust for power delivery - taking it off will sound fast with all the intake noise- and almost certainly wreck the power curve
you may get some more top end- and it will feel fast as you roll through the massive hole created in the middle
Don't do it!
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I only know of one person that tried this and it didn't run at all well, an aftermarket carb is the only real way to go without an airbox.
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Hi all
Funny thing this fuel air mixture malarkey , I ran my xbr cafe racer in "dry build " form all last year with the STANDARD carb and a K and N pod filter and a stainless 2 into1 zorst system and ran without a beat missed. It would pull 90/100 with the only downside at the time being the slipping clutch which did make for some " entertaining" overtakes. The bike has since been completely stripped down, the engine included and been rebuilt to a higher state of tune, complete with brand new mikuni carb and the same K and N filter as before I have only had chance to do a couple of shortish runs as it now, but again so far it appears to run/ pull brilliantly. Much better than a standard xbr. Regards moto63
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Ps. At the time I was running a "predator" 2 into1 zorst, it now has a different, much better 2into1 on. Cheers moto63