Listen to DB8...he know what he is talking about and can walk you through just about anything on these motors. Trust me on this one...
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| TURNING UP GOVENOR http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=6519 |
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| Author: | Quack Head [ Sat Dec 12, 2009 11:20 pm ] |
| Post subject: | TURNING UP GOVENOR |
I HAVE A 35 GDSD AND MY RPMS ARE 3850 OUT OF THE WATER, WOULD LIKE TO TURN THEM UP. ANY ADVICE ON HOW MUCH WOULD BE GREAT. I KNOW THERES BEEN DICUSSION ON THIS BUT I WOULD LIKE TO GET AN ANSWER FROM SOME OF U GUYS WHO KNOW ABOUT THIS. MOTOR IS STOCK W/ APPOX 175HRS |
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| Author: | craig [ Sat Dec 12, 2009 11:28 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
Turn um up to about 4200-4300 out of water and you will be alright. |
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| Author: | Quack Head [ Sat Dec 12, 2009 11:34 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
THANKS FOR THE INFO WILL TRY IT TOMM. |
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| Author: | deadbird8 [ Sun Dec 13, 2009 5:35 am ] |
| Post subject: | Re: TURNING UP GOVENOR |
http://www.allmudmotors.com/blogs/how-t ... k-vanguard Enjoy your new RPM, speed, and power. |
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| Author: | stualaska [ Sun Dec 13, 2009 3:32 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
What's your max rpm under load at your best speed? Turning the rpm much higher than that only gives the possibility of over revving when the prop pops out. If you have an exceptionally strong engine and it will turn over 4000 under load, congratulations, but understand that engine wasn't designed to run there continuously. I like the gov set at 4000 and there are darn few stock, boat/motor combos that will reach that rpm under load. |
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| Author: | Quack Head [ Sun Dec 13, 2009 3:44 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
The best i've ever seen under a lite load is 3710 rpm 28.6 light skinny water and approx 26.5 deep. So your saying if i keep it at or below 4000 under a load that optimum. I set it today at 4060 out of the water. Ill have to wait to see what is does in the water later this week. I would like to set it at 4150 out that should put me at approx 4000 under lite to average load i believe. Thanks for your input. |
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| Author: | deadbird8 [ Sun Dec 13, 2009 6:44 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
You're RPM is low because your governor is set too low. Turn it up to 4200 and go run it. If you are conservative like Mr. Stu, then turn the governor down to ~100 RPM over your top RPM. You want that top end RPM when digging out. Your governor will protect your motor from over revving if your prop jumps out of the water- that is what its there for. Not sure what Stu was getting at there. He seems to have an RPM Phobia and is intent on telling folks to leave RPM on the table. The new CGI controlled motors have their rev limiter set at 4300, Briggs wouldn't design it that way if the motor couldn't handle it. The restriction on the motor is possible valve float around 4400 RPM but thats different on every motor. When people have head work done, they have the valve springs shimmed to remove that restriction. |
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| Author: | HuntingRDR [ Sun Dec 13, 2009 7:05 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
Listen to DB8...he know what he is talking about and can walk you through just about anything on these motors. Trust me on this one...
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| Author: | craig [ Sun Dec 13, 2009 7:11 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
| Author: | stualaska [ Sun Dec 13, 2009 8:17 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
| Author: | Quack Head [ Sun Dec 13, 2009 11:01 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
Thanx DB8 sounds like you know ur stuff. My motor is over 2yrs old with 175 hrs and i want every bit of performance out of it. She will scream after tomm. Anyway they aint nuttin last forever!!!!!!!!!! |
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| Author: | take'emgator [ Mon Dec 14, 2009 4:08 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
But if you don't mess with it you can get alot closer to FOREVER than if you do mess with it.  Don't shorten it's life by messing with it! It'll last alot longer if you stay stock. thats my opinion.
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| Author: | 50fps [ Mon Dec 14, 2009 5:13 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
Gov spring tension plays a bigger role in this than the simple adjustment of a screw. 
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| Author: | WestEndAngler [ Mon Dec 14, 2009 5:49 pm ] |
| Post subject: | Re: TURNING UP GOVENOR |
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