Mixture screw adjustment

[priobe]

The purpose for this thread is to help myself and other understand certain aspects of the 48 IDA.

During my search for information to get these carbs to work correctly on a 427 FE it has been mentioned that the mixture screws need to be 3/4 turn to 1 full turn out to achieve proper tuning.

I have also read that the mixture screws must be set at 1 1/2 to 3 turns out for a proper tune.


From what I can understand the mixture screws are merly a volume screw for the mixture that has already been set by the air holder and idle fuel jet.


Comments have been made that the mixture screw is only for idle. I would like to add that it is only for the idle circuit. Driving at 2000 rpm the mixture screws do have an impact on the operation of the carbs.


Again, I am not out to prove anyone wrong, just looking to start a friendly thread in the operation and understanding of the 48 IDA.

I have seen many time including myself of people asking for help in tuning their Webers and only to receive partical information with no end result if it worked for them or not.


Bottom line I agree with 1 comment that has been made in regards to the 48 IDA, "Every Engine is different even if it has the same exact componets"

If you have were able to apply a standard jetting to A 427 fe with successful results of a final tune, please post your experience.