SOHC.co.uk Forums > CB500/550
500 K cafe racer conversion - build thread
Tomb:
I use open belmouths on my 500/4 carbs, (avatar bike) it runs really sweet, I made my own 4 into 1 exhaust system thats reasonably quiet and bought new carb kits with a view to using the main jets supplied in the kits as a start point and drill out later, after many plug chops I decided to stick with the original jets.
After balancing the carbs it ticks over beautifully
florence:
I use K & N filters and laser exhaust. With bigger jets it runs better than standard. Tickover is perfect and no flat spots. I can't remember what jets I used now but I think it could be 110? Someone here will know more about this than me.
matthewmosse:
More of a question than answer, but what kind of fuel economy are members getting with alterd jettings and filters. I still have mine in a box and May try fitting them again at some point if i can get the carbs balanced too as that May have been what made the bike run rough. I found it worst with the laser system which was also a tad loud for my liking - i preferred my motad neta pipes over others I've tried but am looking forward to trying a 4 into 2 system which is waiting in the shed.
Ewan 500 K1:
Carbs now have 110 jets & K&N's paired with 4 into 4 straight through pipes. Runs sweet with that set up, but was essential to balance the carbs. Also used a coloutune to check idle sped air mix, which seems fine according to the colourtune. Fuel consumption is ridiculous -- 25mpg ish ?? . SPOKE WRENCH ARRIVED THIS MORNIN > WOOP WOOP Front wheel built and trued to 0.2mm vertical and horizontal. First wheel build, wasn't too difficult.
Photos showing roughly what finished job will look like , minus rear sets, new headlight, dual disk, master cyliner, indicators and shorty front mudguard . Dilemma = what to do about rear nudguard, want to keep it clean and open, but dont want muck all over the K&N's
florence:
I have found the fuel consumption is fairly good with the 110. k&N + Laser set up. Of course it all depends on how hard the bike is ridden.
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