geodet Posted November 8, 2013 Report Share Posted November 8, 2013 I see that the 2014 250 will be fitted with the Keihin carb. Is this for performance reasons or cost? Is there a reason to consider an upgrade? If so, are there other considerations such as ignition mapping with a Keihin? I have no particular problem with the del orto apart from what I can only describe as inconsistency. It runs perfectly in one section and fluffs up a bit on the next. This is subtle but definitely there. I clear the engine before each section but it still happens. Any insights gratefully received. Quote Link to comment Share on other sites More sharing options...
baldilocks Posted November 8, 2013 Report Share Posted November 8, 2013 Keihin is a more expensive carb than a dellorto and gives smoother power and increased top end. Keihin is not as stable as a dellorto however and will need fine tuning for altitude / weather. Dellorto in my experience is more reliable so I think your experience may be fault related. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted November 9, 2013 Report Share Posted November 9, 2013 (edited) Keihin is a more expensive carb than a dellorto and gives smoother power and increased top end. Keihin is not as stable as a dellorto however and will need fine tuning for altitude / weather. Dellorto in my experience is more reliable so I think your experience may be fault related. (we are talking Gas Gas??) Be very surprised if Baldilocks is wrong. A dellorto is a good carb for the 250 and the Kehin doesn't work as well as for the 280 and 300. Give the Dellorto a really good clean check float levels are set at 18.5 and the banjo filter is clean. Air filter spotless? Edited November 9, 2013 by nigel dabster Quote Link to comment Share on other sites More sharing options...
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