PTO – Cummins Power Take-Off (PTO) and other PTO Solutions

Here are a few ideas we have had to design when adapting to the front on the C or QSL9.. You have the same base issues with each (incorporating a front engine mount and working around it, and then adding … Read More

Cummins 6B & QSB Oil Filters

Lots of questions come up on what oil filter I should be using on the Cummins B or QSB 5.9. Below is what I can share based on using and working with this engine since 1985. Every 4B & 6B … Read More

Changing a Turbo to Exhaust Manifold Gasket on a Cummins Mid-Range Engine

The pics attached show what we have developed over the years as the “Seaboard Way” to changing out the manifold cap or turbo gasket. Although this is the manifold cap, all is exactly the same for the turbo as to … Read More

Dealing with the Seawater Pump on a Cummins Marine 6BTA 5.9

Mr. ā€œ6BTA 5.9ā€ Cummins owner. Welcome to the world of ā€œcouch engineeringā€. The team of engineers who designed the mounting arrangement for this pump on the later Cummins 6BTA engines, cramped behind the engine mounting bracket, IMO, need to be … Read More

Cummins Marine QSM11 Dry to Wet Conversion

Note: This is only applicable to QSM11ā€™s that you want to de-rate to 450HP at 2100- 2300 RPM  or below…  Typical applications are commercial boats that travel at hull speeds.

What Cummins Marine Diesel Engine Coolant Should I Use?

The only answer I can give you is to see if the coolant meets Cummins requirements for a low silicate coolant… Most ELC’s that I have seen are “Dexcool” spec, meaning no silicates and some other things, and at this … Read More

Is my Boat Over-Propped or are my Engines Over-Loaded?

Signs that your boat is over-propped or over-loaded Are you experiencing engine performance issues? Do your engines seem old and tired and not as “spunky” as they used to be? Are your engines pluming black smoke when trying to get … Read More

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