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8V71 Experts???

L

LeakyBoot

Member
How hard would it be to change the govener? Can I do this without getting the other settings all out of whack? I would like to change to a variable speed govener, which I have 2 of on hand. Thanks, LB
 
Hello LeakyBoot,

Some more info on the type of governors would make it for a better answer. BUT any time you take a governor off, you will have to go through the tune up procedure of the rack and the governor's gap as well as both the idle speed and the no load governed speed.
I have manuals for both the in line and V71 series,

Guido.
 

Have something big soft and bulky ready to throw in the intake when you first start it up. Just in case.
 
You will need to change the governor housing and internalls,plus the governor weight carrier and weights for a VS governor. You will have to make all governor and linkage adjustments except maybe the individual injector lever adjustment.
 
you will have to adjust everything. high speed no load speed governor cap adjustment and rack. Its not hard detroits are very simple. just get a book
 
Hello 8v92guy,

YEA! they are simple, especially if your wrenching on them at work. I have a feeling that he does not! probably looking for more power?
Lets wait and see what he has to say,

Guido.
 
Thanks for the comments. I do have both manuals and also injector gauges for this engine. As for needing more power, no, just need the engine to run at a constant 1600 rpm under different load conditions. Nothing else, idle and 1600 rpm. I have access to a very low mile fire truck engine which likely has a truck engine govener but could by chance have a variable due to being designed to run pumps at a high idle speed. I have not seen the engine in person as yet. I'm not sure just how good the truck engine govener is at limiting high speed. It could be set at 1600 max and then set throttle wide open?? That would eliminate changes to the govener. I used to drive a GMC with a limiting govener set at 61 mph. 366 gas. It worked pretty good as a makeshift cruise control. Just pull out the hand throttle wide open and let it run down the interstate.

I have seen the complete blower unit with govener still bolted on removed. That might be one way to save some adjustments?

No pillows needed to block air intake on this engine as it has the runaway flap intact.

Thanks, LB
 
Hello leakyboot,

All governors DO limit engine high speed. All you need to do is use a P.T.O.cable with a lock, and set the engine to any speed you need to run it from idle to the max governed speed.
When the engine is loaded the governor will try to keep the R.P.M's set, but the no load speed and the load speed will not be the same.
If you look at the governor plate you will se 2 high speed rating, the load and no load speed.
If the no load speed is 2250 rpm's and the full load speed is 2100 rpm's, that is called the droop speed. So if you need to keep your engine at 1600 rpm's under load you need to set the speed at the rpm's that the engine will keep 1600 rpm loaded. 100 to 150 more RPM's then 1600 rpm's.
I know it is a lot of info, but my e-mail is open if you wish to contact me that way,

Guido.
 
Hello LeakyGoot,

I just read your post again. You can set the maximum governed speed to 1600, and set the throttle to full. Now your max rpm is 1600. Just remember that when the engine goes under load it will not keep the rpm's to 1600, because of the governor droop speed. You only need to use a cable to use for the speed you need , and the governor will do the rest,

Guido.
 
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