Hello,
Those of you who have read my previous threads will know I have had some issues with my engine recently, however things seem to be getting better now, and my next task is to try and rebuild my carbs.
While doing this, I have a theory that to get the engine performing / running better, I may need to change the 'needles' inside the carbs. Would anyone know which is the best needle to go for with the following setup;
Original Land Rover 3.5L V8, SU carbs with cone air filters, 'sports' stainless exhaust, and (although not done yet) I am probably going to look at fitting a H180 Kent cam or something similar (Viper Hurricane?) that people can suggest.
I believe the standard needles are 'BGC', although I have not actually looked to see if that is what mine has, I expect so.
Other needles that I have found people recommend on various threads include the 'BAK', the 'BAF' and the 'BBW'. Each of these apparently add more fuel at higher engine speeds, with the BAK being the smallest increase, and BBW being the greatest.
Given that when idling, the mixture is too rich when I set the carb mixture to what seems right for driving, I assume my current needles need to be changed to one of the above to allow for the mixture to be better controlled by the needle rather than just setting mixture rich for idle. (For reference, the reverse is also true, if I set the mixture right for idle, it seems too lean for driving, i.e. less power, occasional misfire at high revs ~4500+ rpm)
Any guidance on these needles would be appreciated, thanks.
Those of you who have read my previous threads will know I have had some issues with my engine recently, however things seem to be getting better now, and my next task is to try and rebuild my carbs.
While doing this, I have a theory that to get the engine performing / running better, I may need to change the 'needles' inside the carbs. Would anyone know which is the best needle to go for with the following setup;
Original Land Rover 3.5L V8, SU carbs with cone air filters, 'sports' stainless exhaust, and (although not done yet) I am probably going to look at fitting a H180 Kent cam or something similar (Viper Hurricane?) that people can suggest.
I believe the standard needles are 'BGC', although I have not actually looked to see if that is what mine has, I expect so.
Other needles that I have found people recommend on various threads include the 'BAK', the 'BAF' and the 'BBW'. Each of these apparently add more fuel at higher engine speeds, with the BAK being the smallest increase, and BBW being the greatest.
Given that when idling, the mixture is too rich when I set the carb mixture to what seems right for driving, I assume my current needles need to be changed to one of the above to allow for the mixture to be better controlled by the needle rather than just setting mixture rich for idle. (For reference, the reverse is also true, if I set the mixture right for idle, it seems too lean for driving, i.e. less power, occasional misfire at high revs ~4500+ rpm)
Any guidance on these needles would be appreciated, thanks.