Compression: B20B4 (AO PISTONS) 8.8:1 (P75) or 9.2:1 (P8R) Bore x Stroke: Redline: 6500 RPM No Knock Sensor Low Compression engine B20B 1999 - 2001 specs Non VTEC Found in: USDM CR-V as a B20B8, CR-V and Honda Orthia as a B20B Displacement: Power: at 6200 RPM Torque: at 5500 RPM Rod length: Compression: 9.4:1 (P8R)-9.6:1 (P75) Bore x Stroke: Redline: 6800 RPM B20Z2 1999 - 2001 specs Non-VTEC Found in: USDM CR-V as a B20Z2, CR-V and Honda Orthia as a B20B Displacement: Power: at 6200 RPM Torque: at 5500 RPM Rod length: Compression: 9.4:1 (P8R)-9.6:1 (P75) Bore x Stroke: Redline: 6800 RPM B20B JDM 1995–1997 spec Non-VTEC Found in: JDM Honda Orthia, CR-V Displacement: Power: at 6200 RPM Torque: at 5200 RPM [4500 RPM 2.0 GX-S] Rod length: Compression: 9.2:1 Bore x stroke: Redline: 6700 RPM Rev Limit: 7300 RPM1998-2002 specs''' Non-VTEC Displacement: Power: at 6300 RPM Torque: at 4500 RPM Rod length: Compression: 9.6:1 Bore x stroke: Redline: 6500 RPM Rev Limit: 7200 RPM Some came with limited production head P8R which had 33mm intake valves (normally found on VTEC B-series) vs 31mm intake (non VTEC B series), and the head had an 84mm shrouding vs 81mm for all other B series heads. Source http://www.honda.co.jp/auto-archive/ B20A/B20B The B20A3 and B20A5 are the predecessor to the B family. All B-series engines were based from the B20A, but most engine components are not compatible. For more information, refer to the F3-series Honda race car that used a B20A engine. Also see Honda B20A engine. B Series Transmissions Note: All (1992 up, non-Prelude) "Big Spline" B series Transmissions are interchangeable. YS1 casing can take S80 Internals or a hydraulic conversion kit can be used to operate hydraulic transmissions in cable operated models, however A1/S1/J1/Y1 internals do not swap into the later model YS1 or hydraulic casings due to different shaft diameters. J1/S1 Found in: Integra XSI/RSI (DA6), Civic SiR (EF9), CRX SiR (DA9, EF8) Type: Cable 1st: 3.25 2nd: 2.052 3rd: 1.416 4th: 1.103 5th: 0.906 R: 3.000 FD: 4.400 A1/YS1 Found in: 1990-93 USDM Integra LS/RS/GS (DA) Type:cable 1st: 3.23 2nd: 1.901 3rd: 1.269 4th: 0.966 5th: 0.742 R: 3.000 FD: 4.266 Y1 Found in: CRX/Civic (optional LSD) Type: Cable 1st: 3.166 2nd: 2.052 3rd: 1.416 4th: 1.103 5th: 0.870 R: 3.000 FD: 4.266 Y2 Found in: CRX/Civic UKDM Type: Cable 1st: 3.166 2nd: 2.052 3rd: 1.416 4th: 1.103