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Tractor Pulling Discussion Forum

Governor

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No Power

06-18-2007 06:55:57




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Maybe somebody can help me out. I have a super M I use to pull. The thing will run 2700 rpm in the yard but once you hook to the skid. The rpm's will drop way down and won't ever pick back up. Everbody tells me to get a M&W governor but other say don't they won't help. I bought this tractor supposidly ready to pull and I don't know a whole lot about it. But it sure dosen't seem to have much power. If someone could give some ideas to try that would be great.

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dboll

06-19-2007 05:12:18




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 Re: Governor in reply to No Power, 06-18-2007 06:55:57  
M&W made a good gov., getting high rpm's are one thing, holding them under load is another!



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No power

06-19-2007 05:38:14




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 Re: Governor in reply to dboll, 06-19-2007 05:12:18  
What do I have to do to hold them? Maybe It just dosen't have the power.



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ChadS

06-19-2007 08:31:10




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 Re: Governor in reply to No power, 06-19-2007 05:38:14  
Might want to look at the weights in the governor. Make sure the pins are in good shape. The weights can pull the rpm down back to a factory spec. A 4 weight governor will do the exact same thing and may surge if its not modified. A lighter set of governor weights will let you run a higher rpm and pull the carb shut. Also check the linkage adjustments, pull the carb bowl off, pull the governor cover off, open up the throttle and see if the butterfly in the carb is opening all the way. If its not, then adjustments need to made. If you lighten the weights, you may have to adust the vertical linkage anyways to dial it in, so think of which direction you want to go! But this will give you something to look at and ponder. JMO Chad

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No power

06-19-2007 10:33:22




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 Re: Governor in reply to ChadS, 06-19-2007 08:31:10  
ChadS? Some people have told me to take the governor completly out and just run off the butterfly in the carb. Will this help or not a good idea. I took the governor off the 450 last night and put that on. It droped the rpm's down to 1600 or 1700 about factory. Do you think that this would help it lug alittle more. What kind of RPM can this handle. Block and motor have been gone through about 3 years ago and had some head work done. Can these handle 2700 RPM?

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ChadS

06-19-2007 16:01:32




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 Re: Governor in reply to No power, 06-19-2007 10:33:22  
Ms have pretty heavy flywheels, so, my opinion is, best to keep em low speed, like maybe up to 2000. The cam is really not meant for that kind of rpm, neither is the carb or intake. the 450 governor has different governor linkage than the M, but a cable of somesort could be rigged up off that lever. 2 weight governor is a pretty good governor, and Id keep a governor on it too. Id say that the 450 governor can be best to give it low end power, the one you have could be messed up by adjustments being out of whack, and can shoot you in the foot if its not right. Lighten up a set of weights for the 2 weight governor, a good stiff governor spring, that will let it idle too short of spring wont idle below 1000 rpm, so keep that in mind. It will be more responsive, hold the rpm longer than a stock governor will. Chad

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No power

06-20-2007 06:08:14




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 Re: Governor in reply to ChadS, 06-19-2007 16:01:32  
Chad I pulled the linkage I think that you talking about out of the M governor. Put that in the 450 governor. How much can I lighten up the weights. How do I get those pins out of the weights and what do I replace them with. They look like they are pins the have been pressed out on the ends. So I will have to drill them out I would assume. So are you saying the I need a short spring our one that's not too short. Have you ran one with out a governor. It will run alot of rpm's but will it have any power. Sorry about all the questions. Just trying to get this thing figured out.

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ChadS

06-20-2007 07:11:39




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 Re: Governor in reply to No power, 06-20-2007 06:08:14  
Those are roll pins, they act like a spring and holds extra tight on the bore its used in. They drive out with a roll pin punch, dont try a regular punch, it will just flare up the pin. A long bolt held by visegrips and a few taps with a hammer should drive em out too. I have drilled and put a new pin in before, but you can get new weights. You can cut bout half the material off the weights. I think there is a casting seam almost in the center of the weight, and I have cut em down to there and had good luck. I used a large sanding wheel and held on to em with visegrips, just dont get em too hot! This may affect idle speed, so you may have to readjust the linkage to make it idle down. The motor will be able to rev up quicker and have a higher limit on the rpm. Ive always ran governors, Ive hot rodded em, but never really got crazy with rpms. 20% is a good difference to notice over stock. I guess it also depends on what kind of pulling your doing. From sled to sled, it can be a completely different set up on a tractor to make the same tractor be able to pull em well. Of course rules apply too! Whats the rules your allowed? Chad

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No power

06-20-2007 08:27:11




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 Re: Governor in reply to ChadS, 06-20-2007 07:11:39  
There are no rules on RPM's in the open class which is what we are pulling. It's really not an open class tractor. Can you tell me what the stock compression should be. I'm starting to wonder if I'm messing with the wrong thing. It might be just wore out. I have between 89-102 difference between cylinders. If this is no good were do I go from here.



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