2008cc type 1... carb jetting? where to start
Hi all
I'm currently finishing off my 2008cc type 1 engine. The carbs that I want to use is twin 44idf webers. Where is a good place to start off with the jetting? choke tubes? Thanks guys |
Im no carb expert by any means... this is just info that I am passing
on that Ive learned from others on the forums... first off from what I understand, you start by taking the size of your intake valve (say you have 40 x 37 valves). so yo take the 40mm valve and subtract 3mm to come to your venturi size of 37. then you take 37 and multiply by 4.2 to get your main jet size (37 x 4.2 = 155) so you would start with a 155 main jet and go from there. how you get your air jet & idle jet sizing Im not sure... I do know that the air jet will usually be larger then the main jet as in (180, 190, 200, etc) |
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