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| 31 vanguard speed https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=2&t=5779 |
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| Author: | cody [ Sun Nov 01, 2009 6:30 pm ] |
| Post subject: | 31 vanguard speed |
I am about to buy a 31 vanguard inboard mudboat on a haul about 14-16 ft. long. It has a clutch! I was wondering what the average speed for the boat should be and what could i do to make it go faster? |
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| Author: | bbb [ Mon Nov 02, 2009 9:49 am ] |
| Post subject: | Re: 31 vanguard engine help |
I think you are asking what kind of speed can you expect from a 31 short tail on a 14-16ft boat. If so, I would say low to mid 20's. Want more speed, you'll need to buy some of the aftermarket parts. You can go as fast as your pocketbook is deep. |
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| Author: | cody [ Mon Nov 02, 2009 9:01 pm ] |
| Post subject: | Re: 31 vanguard engine help |
no its not an outboard its an inboard engine |
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| Author: | slambin [ Mon Nov 02, 2009 9:20 pm ] |
| Post subject: | Re: 31 vanguard speed |
then its a mudboat. I know my buddies mudboat with a 27 kohler only went around 18 and it was a 1438 skiff. Your prolly looking around the same with the bigger hull |
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| Author: | LA OUTLAW [ Mon Nov 02, 2009 9:28 pm ] |
| Post subject: | Re: 31 vanguard speed |
PM Coodik he just finished one I believe it was that size a few days ago. |
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| Author: | bayouboy [ Mon Nov 02, 2009 9:45 pm ] |
| Post subject: | Re: 31 vanguard speed |
Your speed will depend on the clutches gear ratio also. |
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| Author: | machete31 [ Tue Nov 03, 2009 10:50 am ] |
| Post subject: | Re: 31 vanguard speed |
That was my motor that Coondik just finished up. My boat is a Machete (Super Godevil) type unit. The stock 31 with a new prop light boat I could get 23-25 with no wind or current, 18-20 with a hunting load. If you have the ZF transmission and it has a left hand rotation prop you are looking at 1.8:1 reduction, right hand rotation is 1.4:1. I am running a 12x14 Hopkins cleaver (LH rotation) with alot of cup and tip curl. I'll assume if you set it up like a regular mudboat you would run a regular mudboat prop since the prop won't run on the surface. The engine work I just had done was shave the heads, SS valves, timing advance, 36 intake and carb, K&N filter and dual exhaust. I'm swinging the crap out of my old prop, Hopkins is currently building a new prop to match up to the engine mods I had done. I'm not really counting on much more top end but I think my load speeds will be better. One thing I can tell you, my motor never idled and ran so smooth. That Coondik dude is the man!!! |
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| Author: | dead animal [ Tue Nov 03, 2009 12:34 pm ] |
| Post subject: | Re: 31 vanguard speed |
if ur turning the old prop too much, the new prop ur getting, assuming it's either bigger in dia or more pitch/cup, should bring down the rpm's and bring up the speed. that is unless it's too much prop, then u will have to wear it out sum to be able to turn it. good luck, those machete's are a nice rig. 
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| Author: | forever draggin [ Tue Nov 03, 2009 9:32 pm ] |
| Post subject: | Re: 31 vanguard speed |
i ran mudboats all my life, most people i know still do, i would say mid 20s |
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