The best range achieved by the previous Austin marine engine on the same quantity of fuel had been 500 miles at 4 knots.

They differed from previous engines in several of their dimensions.

Compared to the previous 3.5-litre engine, the output has been boosted by 16 percent.

This engine was offered in both 2bbl and 4-barrel variations similar to the previous 326 engine.

Note: for some versions/markets the previous engines are still available.

The last 17 locomotives from 1927 were even heavier than the previous engines, which was due to the increased size of water and coal tanks.

In addition to saving space over previous side-lever engines, they weighed 60 tons less.

Another major difference from the previous engines was the integrated water-cooled oil cooler.

There was no actual increase in capacity over the previous 3.9-litre engine.

This new base engine was also less costly to make, for unlike the previous 170 engine, the 198 used the same block as the 225.