Hello People:



  I always appreciate all the advise I get from you.  Thanks in advance.



  I have a 1996 Sportster Hugger, with:

-K&N Air Filter

-SE slip-ons

-Stock Carb with bigger jet (75)

-883 to 1200 conversion kit

-Stock Cylinder heads



 I was having pinging and overheating problems  just after I make the 883
 1200 conversion.   I post my problem, and it was supposed that I should
get bigger jets and adjust the timing of the bike.

I did it and the problem was solved almost completely;  Now what Im facing
is that the bike after an hour of use, begins to make a strange noise
(clicking or knocking noise) that seems to come out from the Air filter
(Carb) and  the bike loose a little of the crisp throttle response.   It
seems that the heat affect something that makes the engine malfunction.   I
think it may be something on the carb or the cylinder heads!!

I wonder if anybody have had a similar problem and how they solve it.



Regards,





JAVIER BUENDMA