Does anyone know the needle number for the Stromberg high altitude (5000-10,000 foot) metering needles.
I would like to locate high altitude needles to experiment with here in Denver Colorado. Colortune shows my 67 Alpine is running rich at anything above idle.
The parts catalog shows the standard needle as a 5M with Rootes part number 5113831.
No 5M type number is shown for the high altitude needle but the Rootes part number for the high altitude needle is 5058887.
I have the "Haynes Weber Carburetor Manual Including Zenith Stromberg and SU Carburetors" that shows Stromberg needle sizes in appendix 4. Using that data I could make a guess at which needles might work but I would like to know what Rootes recommended or what someone is actually using successfully.
Michael
I would like to locate high altitude needles to experiment with here in Denver Colorado. Colortune shows my 67 Alpine is running rich at anything above idle.
The parts catalog shows the standard needle as a 5M with Rootes part number 5113831.
No 5M type number is shown for the high altitude needle but the Rootes part number for the high altitude needle is 5058887.
I have the "Haynes Weber Carburetor Manual Including Zenith Stromberg and SU Carburetors" that shows Stromberg needle sizes in appendix 4. Using that data I could make a guess at which needles might work but I would like to know what Rootes recommended or what someone is actually using successfully.
Michael