Analysis of a Normally Aspirated L28 from Dyno Data

Big thanks to Richard Idalski (Ricter) and his beautiful '77 280z with stock internals

 

 

Dyno Sheet Data for Blue Line Run 

RPM	Horsepower	A/F
2400	52	18.0
2800	64	18.0
3000	68	17.5
3200	75	17.0
3400	84	15.6
3600	91	15.0
3800	97	15.0
4000	105	14.7
4200	109	14.5
4400	114	14.2
4600	117	14.1
4800	119	14.5
5000	122	14.5
5200	124	14.5
5400	122	14.7
5600	122	14.8

Note: Maximum Torque is at 4000rpm

 

RPM	RWHP	FWHP	Drivetrain Loss HP	DT Loss  %	Ve	Total Air CFM	Total Air lbs/hr	Total Fuel lbs/hr	BSFC	A/F	A/F Corrected			Injector Flow lbs/hr	Injector Flow cc/min	duty cycle %
2500	52	69.1	17.1	24.7	0.75	90.8	376.1	25.1	0.36	18.0	15.0			4.2	40.6	21.6
2800	63	81.6	18.6	22.8	0.79	107.3	444.1	29.6	0.36	18.0	15.0			4.9	47.9	25.5
3000	68	87.3	19.3	22.1	0.79	114.7	475.0	32.8	0.38	17.5	14.5			5.5	53.0	28.2
3200	75	95.2	20.2	21.2	0.80	125.2	518.3	37.0	0.39	17.0	14.0			6.2	59.9	31.9
3400	84	105.5	21.5	20.3	0.84	138.7	574.0	45.6	0.43	15.6	12.6			7.6	73.7	39.2
3600	91	113.4	22.4	19.8	0.85	149.1	617.3	51.4	0.45	15.0	12.0			8.6	83.3	44.3
3800	97	120.2	23.2	19.3	0.86	158.1	654.4	54.5	0.45	15.0	12.0			9.1	88.3	46.9
4000	105	129.3	24.3	18.8	0.87	170.0	703.9	60.2	0.47	14.7	11.7			10.0	97.4	51.8
4200	109	133.9	24.9	18.6	0.86	176.0	728.6	63.4	0.47	14.5	11.5			10.6	102.5	54.5
4400	114	139.5	25.5	18.3	0.86	183.5	759.6	67.2	0.48	14.3	11.3			11.2	108.8	57.9
4600	117	143.0	26.0	18.2	0.84	188.0	778.1	70.1	0.49	14.1	11.1			11.7	113.4	60.3
4800	119	145.2	26.2	18.1	0.82	190.9	790.5	68.7	0.47	14.5	11.5			11.5	111.2	59.2
5000	122	148.6	26.6	17.9	0.80	195.4	809.1	70.4	0.47	14.5	11.5			11.7	113.9	60.6
5200	124	150.9	26.9	17.8	0.78	198.4	821.4	71.4	0.47	14.5	11.5			11.9	115.6	61.5
5400	122	148.6	26.6	17.9	0.74	195.4	809.1	69.2	0.47	14.7	11.7			11.5	111.9	59.5
5600	122	148.6	26.6	17.9	0.72	195.4	809.1	68.6	0.46	14.8	11.8			11.4	111.0	59.0
5800	121	147.5	26.5	18.0	0.69	193.9	802.9	66.9	0.45	15.0	12.0			11.2	108.3	57.6

XLS Data here: Click

XLS format file here: Click