(hp @ rpm)
|7.5||44 @ 4,000||10.2 @ 2,000||1-Aug-69 to 31-Jul-70||180 2151 344 to 180 3100 000|
|1,584||AG||7.5||44 @ 3,800
|10 @ 2,000||01-Aug-70 to 28-Feb-73||181 2000 001 to 183 2346 524 (Germany) / 183 2493 402 (Mexico)|
|1,584||AL, AM||7.5||48 @ 4,000
|10.5 @ 2,000||01-Mar-73 to 1980||183 2346 525 up (Germany) / 183 2493 403 up (Mexico)|
|1,584||AF||6.8||46||Safari||lower compression (through recessed pistons) for countries with low octane fuel (option M240)|
|1,584||AL||in compliance with Austrian exhaust emission standards (option code M335; also for option M610 + M5 + M63)|
|1,584||AM||48||73, 74 Thing||exhaust emission control system and activated carbon container for absorbing fuel vapour (option code M157, USA)|
Engine serial codes include H, AF, AG, AL and AM. Further information about engine codes and serial number ranges used in the VW 181 is needed.
The 1973 and 1974 THINGs had full emissions equipment on the engine. The original THING case is a type 2 or Universal case to provide the attachment points for the skid plates that are bolted onto the bottom of THING engines. 1973 THING and all Military engine tin is without the holes for the heat exchanger tubes as they have gas heaters. Military engine tin also has a hole and cover flap for a starting crank. The Mexican domestic engines all had low compression pistons installed for about a 6.8:1 compression ratio that would run on lower grade Premex gasolines.
Source: Bob Miller (e-mail 8.12.96, digest 8.28.96); Hanno Spoelstra
Copyright © 1996-1999 H.L. Spoelstra / All Rights Reserved