Hi Guys new to Mud motors I have a question I have a PD36 EFI on a Phowler 19x60 with a full grass blind loaded with fuel and 3 guys 75 decoys can only go 13 mph. When empty no blind and one person 19. Any idea what it should do?

You need duals with that size boat and weight or a heavily molded motor.

That's a big heavy boat. Mods will help but definitely won't be a speed boat.

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What year is the motor. Should be getting better speeds than that. I have a 2060 phowler and when motor was stock i would get better than 19 loaded. Now with mods and 4 guys and 150 deekes n gear im mid 20s loaded down

Thanks for reply the motor is 2013 Thinking of taking it back to Illowa Marine for check up and maybe some mods.

remember, these are lawnmower engines, not waterthunder v8"s.

be happy with 13mph loaded.

I would be happy with 13mph loaded down with a longtail, not a 2013 surface drive. Give illowa a call n tell em whats going on. Deff should have more speed than that. What rpms that thing turning.

It runs around 4300 rpms, It could be operator problems. Going to bring to them and go out with a load see what can be done. Purchased it from them in 2013 and till reading post here thought speed was normal for stock surface drive motor.

these motors are finiky, I had my skiff loaded to the gills and had I another guy on top the gear. I stopped 4 or 5 times to adjust my load and improved from 12 to 15 mph in deep water and 17+ running 5' off the bank.

I swapped the extra guy out with a big fat guy like me and 14 was the best I could do. got him out the boat and could run 17 in the deep.

I usually run 22-23 in the deep with a normal load [gen 3]

light and loaded is a world of difference, that's where mods help.

good luck with it!!!!!

It's a good move going back to the dealer for advice. Even with a load you should be seeing high teens or low 20's. My 20 X 60 home built with GD 37 EFI runs 25 with a heavy load. My 24 X 60 Monark, Which is over 30 years old, runs 20 with a load and is powered with a GD and ECOTRONS EFI. If I was the dealer I would look at trim first. Since you seem to be getting good RPM's what is the condition of the prop? Good luck on sorting it out.

Prop Is fist thing I checked after reading post on MMt it looks good no damage and dia is right. Will try moving load around next time out its pretty col here in Michigan may have ice next time out after Thanksgiving. Thanks for the help.