"Marine injectors" make 40 more hp?
Stock tip # 304
Marine tip # 311
-----------------------------------------------------------------
Stand set to 70 cc fixed using test calibration nozzles
------------------------------------------------------------
3,000 rpm
_________
311
130 bar 69 cc
142 bar 67 cc
146 bar 65 cc
304
142 bar 64.5 cc
1,600 rpm
__________
311
130 bar 41 cc
142 bar 51 cc
146 bar 46.5 cc
304
142 bar 49 cc
Conclusion: Marine injectors basically put out the same amount of fuel unless you drop the popping pressure to stock specs.
Marine injector output drops dramatically at low speed especially if you drop the pressure real low. Pressure plays a critical role with different combinations.
Atomization does not appear to be affected by the slight pressure changes. If anybody has a simple way to verify atomization please let me know.
These specs really need a graph, so somebody can jump right in and make one.
Some tests were not performed on the stock nozzles because that's not what this subject is about and it takes to long to test all the possibilities.
Myth > Busted.
Someone told me Army injectors make more power, but that might be just a myth.
Stock tip # 304
Marine tip # 311
-----------------------------------------------------------------
Stand set to 70 cc fixed using test calibration nozzles
------------------------------------------------------------
3,000 rpm
_________
311
130 bar 69 cc
142 bar 67 cc
146 bar 65 cc
304
142 bar 64.5 cc
1,600 rpm
__________
311
130 bar 41 cc
142 bar 51 cc
146 bar 46.5 cc
304
142 bar 49 cc
Conclusion: Marine injectors basically put out the same amount of fuel unless you drop the popping pressure to stock specs.
Marine injector output drops dramatically at low speed especially if you drop the pressure real low. Pressure plays a critical role with different combinations.
Atomization does not appear to be affected by the slight pressure changes. If anybody has a simple way to verify atomization please let me know.
These specs really need a graph, so somebody can jump right in and make one.
Some tests were not performed on the stock nozzles because that's not what this subject is about and it takes to long to test all the possibilities.
Myth > Busted.
Someone told me Army injectors make more power, but that might be just a myth.