To governor or not to governor that is the question

My truck doesn't have a governor.

We have the Cummins N14 scan tool. According to that someone previous to us owning it has had the truck up to 102 mph.

I would be afraid things would start flying apart at that speed.

 

Mines set at 96

 

Guys,people are confusing a governor with a computer speed limiter,which is also a governor of sorts.ALL diesel engines have a rpm governor of some type.The older diesel engines were mechanical,newer are electrical.Diesels are high compression low rpm torque engines,that's where they make their torque,down low.Without a high idle rpm governor,a diesel would very easily destroy itself,and prematurely wear out.Not anything like a high winding gas engine.Any of you guys that say you have no governor,tell me what happens to your rpm's when you step on the throttle,when not in gear or sitting still.That is a governor holding your rpm's at a preset level so the engine won't destroy itself.

 

I get that and so does everyone else in this thread. Read the ops original question and you will see he's calling the speed limiter a governor. Yes its technically a speed limiter but we are all intelligent enough to figure out what the op was looking for.

Thank you for the setting us technically straight.

 

In the old days,before electronics and computers,your speed was limited to what gears you had,and what high rpm your engine was set at.If you had a Cummins there were several ways you could defeat it.Lots of company drivers would carry a "stinger".Basically a small screwdriver,with a set of fittings and an o-ring around it,that you would screw into the governor housing on the back of the PT pump.You would adjust it in and out and it would bump the governor spring and give you more RPM's.Guys would also remove the fuel return line and put a restrictor in there,like a dime, to increase fuel pressure.There were several other tricks,too,but none of them where any good for the engine in the long run,but it would help you get up the hills a little faster,lol.Some guys would run a rubber return line into the cab and lay it on the floor,and when you got to a hill you would step on the hose and restrict the return.You could also take the governor housing off,remove the snap ring that held the spring in and add shim washers,and that would really turn your R's up.Wouldn't necessarily have any more power,(unless you changed your button) but it would rev higher.

 

What????

That's a really hard read and how does it relate to anything that's going on now?

 

No truck should be restricted to run below the posted truck speed limit in any state in which that truck runs. If it is, the driver is losing money every day because he is not performing to his full earning potential. Not to even get into those rolling road blocks I see every day I'm on the road.

 

If drivers reward is available in ecm set parameters at a level your comfortable with and if driver meets that goal he earns a bit more speed and you still get decent fuel milage .. If driver don't care about fuel he don't earn extra speed . Just make sure it's a acceivable goal

 

Then don't read it.I thought I'd share how things were done in the old days,when there were more ingenious truckers,not just steering wheel holders.Obviously you have no interest in it.Carry on.

 

Doug, you are right in that. I knew how to turn up Cummins and 6v92 Detroit. Other drivers could not figure why I always had a strong running truck. I just told them I was on really good terms with the shop, they never did figure it out.

On another note the W900L I driver now on my part time job will run in the triple digits. That doesn't mean I have or ever will run it that fast, 90 mph @ 1550 rpm was good enough for me.