Presidento skrev:
The following suffixes were commonly used by Volvo:
A - single constant-pressure type carburetor (such as the Pierburg 175 CDUS), typically with manual choke
B - high compression, with twin carburetor's, either twin zenith-strombergs or twin SU's.
E - high compression, no catalyst, mechanically fuel injected k-jetronic
BxxET - K-jetronic turbo
B2xxET - Motronic controlled electronic fuel injection, turbo.
F - low compression (9.8:1 on B230F, 9.5:1 on B280F, 10.0:1 on B234F and 10.7:1 on B2304F), US/Europe version (F for Federal) with catalytic converter. Europe/APAC version, fuel injected (usually LH Jetronic or Bendix Regina)
K - single jet type carburetor (such as the Solex-Cisac carbs), typically with automatic chokeG - LH2.4 Jetronic but without cat. converter, CO adjustment on the AMM (similar to LH2.2 Jetronic). Some models without O2 sensor, others with O2 sensor which requires regular replacement at intervals due to lead fouling. For markets which unleaded fuel was rare in the early 90's, e.g. Eastern Europe
FB - low compression version of B230F (9.3:1) with the "531" cylinder head and VX3 camshaft, power output 11 kW (15 PS; 15 hp) and 2 N⋅m (1.5 lb⋅ft) more than B230F. LH2.4 Jetronic fuel injection, for the European and Australian markets.
FX - same as the FB but with the distributor mounted on the block (instead of the head) for use in the 240.
FD - essentially a B230F fitted with exhaust gas recirculation (EGR) and Pulse air system for cleaner emissions
T - turbocharged, after E or F suffix (example: B21ET, B230FT)
FK - low pressure turbo, 1995 onward, not supplied in North America. Identical to the B230FT engine of that time but lowered boost level (4 PSI)
FT - LH-jetronic 2.2/2.4 Turbo, 8.7:1 Static CR achieved by dished pistons.
FTX - Higher power output B230FT (approx 190 hp)