Change Differential Gears to new Ratio?
Has anyone changed the differential gears in their MH to a different ratio? Our 1999 Brave is geared way too low for how we use it and my thought was that I'd get better mileage with a higher ratio. ...
Forum Discussion
Jagtech wrote:
All engines have an optimal rpm range, and MOST manufacturers will take that into consideration when building a chassis. That's what you want to see at cruising speed if you are considering a gear change.
This is the important and correct fact. ALL engines are designed for an optimal rpm range and have an optimal rpm for economy within the larger range. If you normally drive slower than the designers/engineers anticipated, you should increase the rpm for better mileage. Conversely, if you drive faster than anticipated by the designers/engineers then you should decrease the rpm for optimal mileage.
You have questions to answer to yourself, not this group, before you do anything. Another's experience with a different coach means nothing as it applies to your coach and your driving style.
All of those were considered when I made my conversion from gas to a Duramax diesel. The net change for me was to go from 7.5 mpg to 14.5 mpg. The only thing that indicates is that if you want a major increase in fuel mileage, you need to change the engine instead.
