Paul, Can you give me the flow rates for the Mazda yellow injectors
please?
Neil. Ungar
I don't think I have anything official.
This is from
https://www.rx8club.com/series-i-tech-garage-22/fuel-injector-info-150432/page5/
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more accurate data for the yellow P2/Secondary injectors:
Flow Rates:
450cc/min at 3 bar
486cc/min at 3.5 bar
524cc/min at 4 bar
[524 cubic centimeter/minute = 8.305 gallon/hour [US]]
[51.9 pounds per hour at 6.25 pound per gallon]
[At a BSFC of .5 pounds per hp that is like 100 HP per injector A
lot :-)
Full rich full power it is .65 BSFC or 80 HP per injector.
Or 320 HP about right for a p-port at 10,000 RPM :-)]
Resistance: 11.8-16.5 Ohms
Voltage: 8-15 Volts, Nominal 13.5 Volts
Amperage: 1.0 Amps
Pressure: Min. 36 PSI (2.5 bar), Max. 101 PSI (7 bar)
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Some electric pumps won't put out 100 PSI at these kinds of
flow rate and pressures so check your pumps.
The TTC electric boost pump pressure would drop way off to
about 50 psi when we asked it to start the TTC engine.
It would however start. Then the mechanical pump took over
and gave us 150 PSI.
Paul Lamar
That is a lot of pressure considering most port EFI systems run
about 43 to 50 PSI.
Direct injection is about 2000 PSI. Is that part of the methanol
fuel enrichment
required of running alcohol?
Dale Davies
Bosch injectors. You need the pressure to get enough methanol
for 650 HP with only four injectors.
2000 cubic centimeter/minute = 31.700 gallon/hour [US] Max.
Just 4 is 126 gallons per hour or 792 pounds per hour Max.
at a full rich BEFC of .65 that is 1,200 HP!!!! Possible for a 2
rotor
at well over 100 inches of Hg manifold pressure and 11,000 RPM.
Imagine under 200 pounds for the engine and turbo !!!!!!
Mind blowing!!!
Mark my words. The Wankel will replace the turbo prop sooner or later.
I might be dead by that time but it is going to happen.
Paul Lamar
I had my yellow injectors cleaned and flow tested.
408cc @ 2.25bar
Then had them modified
http://injector-rehab.com/shop/RX8-and-WRX-Modification.html
820cc @ 2.25bar
Matt Boiteau
2.25 is a little low. That is about 34 psi. Most efi system run 50 psi.
Paul Lamar
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