Isuzu 42 175 Amp Alternator Upgrade.

Travel out to West London and fit 175A Alternator onto Aqualine Narrowboat. Original alternator was the factory 110 Amp prestolite upgrade so the engine already had a 6PK crank pulley fitted. Original alternator mounting bush ground off and my custom folded bracket and shim bolted on.



New alternator fitted with a 60mm freewheeling pulley and shimmed for perfect alignment. The new setup transforms the charging power and is a great upgrade for a lithium battery installation or effortlessly running a small washing machine. I’ve had 6PK crank pulleys made so this setup can be fitted to the majority of 4 cylinder Isuzu engines. With the larger 60mm alternator pulley alternator current is ~110 amps at tickover.