Re: TR4A motor - Need Weber tuning tips

[CBrown1500@aol.com]

Tommy, 

Initially, try either a slightly larger main, i.e. 145 or 150, or a slightly
smaller air correction, i.e. 150. You should already be running a 32 or 34 mm
choke tube and a 4.5 auxiliary choke.

Have you checked the mechanical advance on the Mallory? Around the 4500 rpm
mark, you'd probably like to have about 30-35 degrees of advance. 

Failing these, you may need to change the emulsion tube to a F15

Good luck
Charlie Brown
Capital Triumph Register