Which are better 85# MSD/Holly or 83# Siemens Injectors????

Black Car

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Joined
May 25, 2001
For people that have used basically 83# injectors for street use, which one did you use and what was good or bad about them.

The Siemens are called 83# but according to Racetronix site.
Siemens are supposely 86# and MSD/Holly are 85# based on Racetronix's site.

Siemens spec,
Part Number 3105
Static Flow Rate (GAS): 86 lb/hr @ 43.5PSI (300kPa) = 903cc/min, 10.88g/s
Static Flow Rate (Test Solvent): 83 lb/hr @ 43.5PSI (300kPa)
Coil Resistance: 2.35 Ohms / Low Impedance / Low-Z(ECM driver modifications required)
Pencil beam spray pattern


MSD/Holly specs

Part Number 17113743 (OE # 25324745)
Static Flow Rate @ 43.5 PSI (300kPa) = 85.0 lb/hr / 10.7gm/sec / 893cc/min
Static Flow Rate @ 58.0 PSI (400kPa) = 98.1 lb/hr / 12.4gm/sec / 1031cc/min
Dynamic Flow Rate @ 43.5 PSI (300kPa) = 1.99 gm/pulse - 2.5ms pulse width and 10ms repetition rate
Coil Resistance: 2 Ohms / Low Impedance / Low-Z (Peak-hold ECM driver modifications required)
Cone Spray Angle - 16.6 degrees - single spray cone. Approximate cone angle for 90% of spray volume

Thanks,
Gary
 
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