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Old 04-30-2008   #1 (permalink)
JohnD
Senior Member
250 Grand Prix
 
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Join Date: Dec 2007
Location: Tampa, Florida
Posts: 118
Better project twin choice: Carb or F.I. model

Let's say that you are interested in getting a Thruxton or Bonnie and doing some speed work on her. Something like Thruxtonboy has done in his thread, "More Powerful Thruxton", ie. big bore, pipes, porting and polishing, big valves, better carbs etc. That last part is the question, better carbs? In the U.S. the 2008 twins still have carbs while Europe has switched to fuel injection, but the rumor is that we get F.I. next year.

That brings up the question: is extra performance easier or cheaper to achieve with carbs or F.I.? If F.I., it would be better to wait for F.I. models to arrive in the U.S. This question is also relevant in other countries because there are pleanty of older models with carbs on the used market.

If one can use the stock F.I. (another question in itself), it seems one can then save buying expensive aftermarket carbs. From a style standpoint carbs certainly look good (especially with velocity stacks), but I have read that the F.I. is hidden in throttle bodies that look like carbs to preserve the original look.

So what is the better hop-up choice: carbs or F.I. ?
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