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RUNNING TOO MUCH BOOST OR BOOST WITHOUT PROPER TUNING WILL DAMAGE YOUR MOTOR USE THIS INFORMATION AT YOUR OWN RISK

Common Crank Pullies

	Crank Pulley	Inner Diameter	Outer Diameter	Weight

	CRV		6.36"/16.2cm	6.57"/16.57cm	6.6lbs
	LS		5.79"/14.7cm	6.00"/15.20cm	6.6lbs
	SIR/GSR/ITR	5.38"/13.7cm	5.59"/14.20cm	5.4lbs

Belt Sizes For Pullies

	Pulley			Stepper		     Belt

	SIR/GSR/ITR		    N		    40315
	SIR/GSR/ITR		    Y		    40315

	LS			    N		    40330
	LS			    Y		    40330

	CRV			    N		    40340
        CRV			    Y	            40340

	4.2		            N		    40240
	4.2		            Y		    40255

	4.0		            N		    40235
	4.0		            Y		    40250-40255

	3.8/3.6	          	    N		    40230
	3.8/3.6	          	    Y		    40245-40252

	Notes: 
	1. To prevent slippage run POLY V belts. 
	2. Slightly longer belts may be used for better belt wrap on high rpm pulley combinations. 

Boost with Common Pulley Combination for B-Series - M62 with VTEC Motor

	Engine Size (cc)		Crank		Stepper		Nose	Boost (PSI) 	Blower RPM 

	1595 (B16A)		SIR		NO		4.2"	6.9		10888
	1595 (B16A)		SIR		NO		4.0"	7.9		11433
	1595 (B16A)		SIR		NO		3.8"	9.3		12034
	1595 (B16A)		SIR		YES		4.2"	9.7		12195
	1595 (B16A)		SIR		YES		4.0"	11.2		12804
	1595 (B16A)		SIR		YES		3.8"	12.8		13478

	1595 (B16A)		LS		NO		4.2"	8.6		11718
	1595 (B16A)		LS		NO		4.0"	9.9		12304
	1595 (B16A)		LS		NO		3.8"	11.8		12951
	1595 (B16A)		LS		YES		4.2"	12.1		13124
	1595 (B16A)		LS		YES		4.0"	13.5		13780
	1595 (B16A)		LS		YES		3.8"	14.9		14505

	1595 (B16A)		CRV		NO		4.2"	11.6		12871
	1595 (B16A)		CRV		NO		4.0"	13.0		13515
	1595 (B16A)		CRV		NO		3.8"	14.4		14226
	1595 (B16A)		CRV		YES		4.2"	14.7		14416
	1595 (B16A)		CRV		YES		4.0"	16.3		15137
	1595 (B16A)		CRV		YES		3.8"	17.9		15933

	1797 (GSR)		SIR		NO		4.2"	4.9		10888
	1797 (GSR)		SIR		NO		4.0"	5.8		11433
	1797 (GSR)		SIR		NO		3.8"	7.1		12034
	1797 (GSR)		SIR		YES		4.2"	7.4		12195
	1797 (GSR)		SIR		YES		4.0"	9.1		12804
	1797 (GSR)		SIR		YES		3.8"	9.4		13478

	1797 (GSR)		LS		NO		4.2"	6.5		11718
	1797 (GSR)		LS		NO		4.0"	7.5		12304
	1797 (GSR)		LS		NO		3.8"	9.1		12951
	1797 (GSR)		LS		YES		4.2"	9.3		13124
	1797 (GSR)		LS		YES		4.0"	10.3		13780
	1797 (GSR)		LS		YES		3.8"	11.6		14505

	1797 (GSR)		CRV		NO		4.2"	8.9		12871
	1797 (GSR)		CRV		NO		4.0"	9.9		13515
	1797 (GSR)		CRV		NO		3.8"	11.1		14226
	1797 (GSR)		CRV		YES		4.2"	11.4		14416
	1797 (GSR)		CRV		YES		4.0"	12.8		15137
	1797 (GSR)		CRV		YES		3.8"	14.2		15933

	1973 (B20 VTEC)		SIR		NO		4.2"	3.3		10888
	1973 (B20 VTEC)		SIR		NO		4.0"	4.4		11433
	1973 (B20 VTEC)		SIR		NO		3.8"	5.4		12034
	1973 (B20 VTEC)		SIR		YES		4.2"	5.9		12195
	1973 (B20 VTEC)		SIR		YES		4.0"	6.9		12804
	1973 (B20 VTEC)		SIR		YES		3.8"	8.0		13478

	1973 (B20 VTEC)		LS		NO		4.2"	4.8		11718
	1973 (B20 VTEC)		LS		NO		4.0"	6.0		12304
	1973 (B20 VTEC)		LS		NO		3.8"	7.1		12951
	1973 (B20 VTEC)		LS		YES		4.2"	7.4		13124
	1973 (B20 VTEC)		LS		YES		4.0"	8.6		13780
	1973 (B20 VTEC)		LS		YES		3.8"	9.5		14505

	1973 (B20 VTEC)		CRV		NO		4.2"	7.0		12871
	1973 (B20 VTEC)		CRV		NO		4.0"	8.2		13515
	1973 (B20 VTEC)		CRV		NO		3.8"	9.1		14226
	1973 (B20 VTEC)		CRV		YES		4.2"	9.3		14416
	1973 (B20 VTEC)		CRV		YES		4.0"	10.4		15137
	1973 (B20 VTEC)		CRV		YES		3.8"	11.6		15933

	Notes:
	1. Blower RPM calculated for an engine RPM of 8500.
	2. Boost is an estimate for a non intercooled/non-ported blower; Intake, exhaust, and camshaft selection will effect boost. 
	3. Blower heat becomes a significant problem on non-intercooled (or non-ported) blowers; running above 8 psi and is not advised.
	4. Running above 12 psi regardless of setup is not advised.
	5. An Endyn ported blower makes approximately 7% more boost.


Estimated Intake Temperatures

	Boost	Ambient Temperature		Intake Temperature	

	6 psi		10 c /  50 f		 53 c / 127 f
	6 psi		20 c /  68 f		 65 c / 149 f
	6 psi		30 c /  86 f		 76 c / 169 f
	6 psi		40 c / 104 f		 88 c / 190 f

	8 psi		10 c /  50 f		 67 c / 151 f
	8 psi		20 c /  68 f		 78 c / 172 f
	8 psi		30 c /  86 f		 90 c / 194 f
	8 psi		40 c / 104 f		102 c / 216 f

	10 psi		10 c /  50 f		 83 c / 181 f
	10 psi		20 c /  68 f		 97 c / 206 f
	10 psi		30 c /  86 f		108 c / 226 f
	10 psi		40 c / 104 f		122 c / 251 f

	12 psi		10 c /  50 f		103 c / 217 f
	12 psi		20 c /  68 f		116 c / 240 f
	12 psi		30 c /  86 f		130 c / 266 f
	12 psi		40 c / 104 f		144 c / 291 f

	Notes: 
	1. LHT intercooler should reduce intake temperatures by 28-38 C / 50-70 F
	2. Ambient temperature is intake temperature prior to compression.
	3. Calculations based on 65% Adiabatic Efficiency for 8 psi and below.
	4. Calculations based on 60% Adiabatic Efficiency for 10 psi and 55 for 12 psi.