Injectors for a 13bNA SP
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SCCAEP
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Injectors for a 13bNA SP
I asked this in the 2nd Gen section and didn't get any real solid answers other than my own. I already have balanced/blueprinted 460cc injectors back in the car and got to thinking they might not be enough. Before I go to the dyno and find out for sure, I am thinking I should just go ahead and change them out now. More money.
According to RC, if the desired BHP is 285, 4 injectors, .65 BSFC (per RC's recommendation on a 13bNA), 80% cycle and 43.5PSI, a 612CC min injector is needed.
This is a 13bNA SP motor, fully built. I am thinking I should get some RC 660CC injectors as the 460CC would max out around 215BHP with the BSFC, cycle and PSI above according to their calculator http://www.rceng.com/technical.aspx
Can anyone definitively say the 460CC won't work for the desired HP and that a 660CC is a good choice before I waste more money?
According to RC, if the desired BHP is 285, 4 injectors, .65 BSFC (per RC's recommendation on a 13bNA), 80% cycle and 43.5PSI, a 612CC min injector is needed.
This is a 13bNA SP motor, fully built. I am thinking I should get some RC 660CC injectors as the 460CC would max out around 215BHP with the BSFC, cycle and PSI above according to their calculator http://www.rceng.com/technical.aspx
Can anyone definitively say the 460CC won't work for the desired HP and that a 660CC is a good choice before I waste more money?
#2
Old [Sch|F]ool
You may be doing better than .65 BSFC.
Working backwards on the RC calculator (neat gadget), my car is at about .55 BSFC and that is running still a little too rich (12.5:1 under the test conditions) and ignition timing is probably not 100% optimized.
Working backwards on the RC calculator (neat gadget), my car is at about .55 BSFC and that is running still a little too rich (12.5:1 under the test conditions) and ignition timing is probably not 100% optimized.
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SCCAEP
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The 285 number is crank HP I plugged in, I figured 18% drop for driveline which gives 233RWHP. I know that is a very lofty goal but have heard it's attainable, whether that is true or not is unknown. I'll have my numbers in 2 weeks when my tuner gets back in town and we head to the dyno.
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