Ag Govenor questions???

RyanB

RyanB

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Aug 10, 2006
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Hey guys...I have been doing a bit of research on the AG govenor setup and just wondering what is done to get the RPM out of it. I talked to a local shop up here about it and they said the most they have seen as far as RPM's from a stock govenor was 3500rpm.

What exactly is happening to them in order to get 5 or 6K out of them. From what he said is that there is just one large spring in it and the weights. and other than grinding the weights down he doesn't see how to get that much RPM out of them.

Just thought I would ask on here seeing its probably going to be hard getting the info somewhere else.

Thanks...Ryan
 
shaving weight off the weights, and a heavier spring the throttle is very stiff on a race application rsv pump
 
Shaved weights, and spring combo's. That's where you will get the lope at idle also, so you can play with spring tension, and adjustment to calm the idle down.
 
Like the other guys stated, Bosch makes a lot stronger spring than any that come in normal application...then add a light set of weights and you can get fueling way beyond 6k

There are many ways of building the governors for max travel, idle, etc. Not all will lope at idle and not all will be hard to control fuel on...
 
They are right, shave the weights, get the stronger spring, might be able to track down the part number. The idle can be controlled somewhat. But from my expereience, they fight you pretty good, we usually use hand throttles for them, they are a little much to control with your foot.
 
You guys that have ran both the automotive and the RSV gov on the same motor setup, What is the biggest difference?

Thanks
 
12VHotrodder said:
You guys that have ran both the automotive and the RSV gov on the same motor setup, What is the biggest difference?

Thanks
Click to expand...


Stronger resistance on the throttle, More RPM's. Its a lot better at fueling at higher rpm's.
 
Here's something to think about. We have ran a 215 Hp pump, 5k gov springs ( really stiff inner mind you compared to other 5k's) lazers etc, 1mm test tip on the stand and we got some intresting results. This pump ( all stock internals ( plungers barrels etc, just set up for max rack) Produced 700cc of fuel all the way to 6200rpm, then started coming down to about 650cc at 7000rpm ( poor test bench was worrking pretty hard) Thats where we stopped cause our inlet psi was dropping under 30psi. All this with the standard auto style gov! Can an ag gov improve on this for me? ( not trying to be smart, just want to know for my own conclusions)
Thanks
 
Is this going to be another good thread that goes dead?
 
Here's some pics of stock weights and springs in comparison to cut weights and a higher tension spring
n1304880143_30508318_1261355.jpg

4415_1089517400549_1304880143_30508320_6492043_n.jpg

4415_1089517240545_1304880143_30508319_8021221_n.jpg
 
you don't by any chance know the weight in grams that those weights are now down to??? Is the spring available at pump shops or is it custom?

Ryan
 
RyanB said:
you don't by any chance know the weight in grams that those weights are now down to??? Is the spring available at pump shops or is it custom?
Click to expand...

No, I'm not sure on the weight in grams that we have them cut down to. I know that some other shops cut off a lot more material than we do, but we've found nothing is gained other than a more sensitive governor by doing that.

As for the spring, any shop who has the Bosch part number for the spring can get it :poke:...those who don't have it, obviously haven't built an open rpm governor and so you're going to be a guinea pig :Cheer:

Let me also say in advance that after working on pumps from different shops, that almost everyone sets there governors up a little bit different way. The shop I work at (Diesel Performance Engineering) does them a certain way because they are reliable, function well, and they make calibration easy :rockwoot:
 
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