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has anyone tried putting a harbor freight v twin predator engine on their mule. i have ordered the engine and was wondering about what driven clutch to go with the 1 inch shaft. the mule is a 2005 3010 with the 620. does any one have any thoughts,ideas or concerns that help with the project.
thanks
robbie
 

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has anyone tried putting a harbor freight v twin predator engine on their mule. i have ordered the engine and was wondering about what driven clutch to go with the 1 inch shaft. the mule is a 2005 3010 with the 620. does any one have any thoughts,ideas or concerns that help with the project.
thanks
robbie
I put an 18 HP Briggs on a mule 1000. On this one the motor and tranmission was one piece so I made a plate to seal off the tran. I got a clutch made by Coment from a place that sold aftermarket bike and snowmobile parts. Never checked the top speed on it but lets just say it did not go 25 mph anymore. You could pop a wheelie with 2 people in it and it got hairy with the steering. The people that I sold it to still have it and it is going strong. That was 10 years ago
 

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Discussion Starter #3
thanks scout for your reply,im build in mine to work with and the reason im changing motors is the 620 went to knockin and this engine wasnt but 574.00 to my door. thinking reall hard about the comet 780 clutch but still not sure.
 

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If and when you do this it is very important to get your belt alinement correct. Try to get the new engine in a location that you can use the same belt as is on they now as it will save you a lot of head aches later.
 

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thats my plans cause the clutch is looking around 280.00 . its like that song says,you dont know what you till its gone, i have sure missed my mule. surely someone else has done some kind of motor swap for there mule. i havent found nothing execept for a kit to put a gas motor in where there was a diesal motor.
 

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Discussion Starter #6
well i learned a lesson. got to the store and buy the engine, dont order online. got it and it looked like it fell out the back of the truck going down the highway. took it to the nearest store and they exchanged it. hope to order the comet 780 this week.
 

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Hi guys,

I am looking to try to do the same type of change on an 88 Mule 1000 with a blown engine. I know this thread is a little old but I’m hoping you can give me an update and/or answer a few questions.

For this type of swap, for a Predator or similar engine, do both the drive clutch and the driven clutch need to be replaced or were you able to use the original Mule driven clutch?

Did you have to create some type of platform to mount the engine or did it fit the original setup?

Since you are using the original transmission/differential am I right that the differential lock is maintained?

If you have any other advice, tips, or especially pics I’d really appreciate it.

Bill
 

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Discussion Starter #8
i am only replacing the drive clutch with a comet 780. as for the engine plate i am making one that i can adjust side to side and forward and backwards so i can use the orignal belt and yes like on mine i will keep the diff lock and 4x4.
 

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Thanks for getting back. I haven't taken the old motor out yet because I wasn't sure how easy or hard the swap would be but it sounds like this might not be as bad as i thought.

Good luck with yours, I'll be anxious to see how it goes.
 

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I don't remember on the clutch but I don't think you can reuse it on another motor. You need to make a motor mounting plate and slot the holes for adjustment keeping everything in line. If your belt is out of line with your clutch and torque converter it will eat up your belt. On the one that I had the motor and transmission were one piece and I just made a plater to cover the front of the transmission. You will not lose any thing you have now except the old motor
 

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Thanks again for getting back to me.

Scout, I have the same version you had with the one piece engine/trans and your idea of separating them and putting a plate on the trans to close it up was what convinced me this wouldn’t be as difficult a I thought.

I’m planning to use a 13hp Predator motor from Harbor Freight. I was just looking at the mule again and it looks like there will be plenty of room once the engine and all the hoses, boxes, etc. there will be plenty of room so hopefully it will go well.
 

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Thanks again for getting back to me.

Scout, I have the same version you had with the one piece engine/trans and your idea of separating them and putting a plate on the trans to close it up was what convinced me this wouldn’t be as difficult a I thought.

I’m planning to use a 13hp Predator motor from Harbor Freight. I was just looking at the mule again and it looks like there will be plenty of room once the engine and all the hoses, boxes, etc. there will be plenty of room so hopefully it will go well.
Set your replacement engine on a flat surface and measure to the top of it. Then measure the space where it will go in the mule. I had to make the motor mounting plate below the tubes but the new engines are not as tall and you may be able to set it on the top which will be easier. I don't know what tools you have but I had a machine shop when I did mine so I could do a lot of different things easier. I know of one guy that put Onan engines in a bunch of them and he made templates for every thing
 

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It looks like I'll have about 1.5 inches of clearance between the top of the engine and the bottom of the bed when it's down but I'll have to make a mount to go under the tubes. Fortunately I have a friend who was a machinist and he offered to help.
 

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Hey guys I’m still messing with this and I’ve run into a potential problem I’m hoping you can help me with.

In checking specs on the engine it says the output shaft rotates counter clockwise. When looking at the Mule the current engine output shaft and the driven clutch are on the right or passenger side. I’d have to mount the new engine basically backwards to get the output on the right side. Since the engine rotates counter clockwise it seems to me that the Mule would go backwards when in forward and forward when in reverse.

Maybe I’m not thinking about this correctly but did this come up with the engines you used and if it did how did you resolve it?

Thanks
 

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That a new one on me. All the engines I have ever had the shaft turned clockwise. Can you roll the engine over and check t out
 

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Discussion Starter #17
well project is complete. you wouldnt believe the the difference in the power and torque.where it would only run around 21 now its around 32 (with 3 people exceeding 800 pounds) and will spin the tires big time.
i would highly recommend the 670 predator to any one needing to replace there motor. now i got to find a rear hub if anyone has one for sale please hit me up.
 

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Congrats Backwoods, it sounds awesome!

I guess my concern about the counter clockwise rotation of the motor wasn’t an issue because the Harbor Freight website says the 670 is also CCW rotation.

I’d love to see some pics if you can share or pick your brain if you have some time.

Enjoy it.
 

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Hi all, so I was left wondering if the CCW thing was an issue or not? Does the Predator 670 work, right out of the box? Does anyone have any photos of their install? I've got a 2005 chassis with a transmission but no engine, hoping to get it running soon. Thanks!
 

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howdy just finished a customers dead diesel 4x4 mule to a v-twin 22hp predator powered mule pretty easy just a lot of grind action and 3 real fabs.

There is some wiring! also use the predators start switch its 5 wire the mule is 3 wire.

The exhaust, cut the old exhaust at the u, and use the u to connect the second header into the primary. Welding required but straight forward.

The new motor mount and linkage risers- 4 metal rubber spacers motor mounts. plus 2 risers for the linkage above the motor. the motor has its own fuel pump, like a golf cart. Just pull the tank clean it and unhook the diesel filter and go.

I used the comet 780 clutch with 1/38 belt use . all the fab

Carter plus has it for 250$ to your door. you will need a 1in outer dia shim/spacer for the clutch shaft 2.97-3.00 inch long and a 5 inch long 3/4-16 pitch crank bolt......... (yes 16 pitch)

Start switch yellow predator to brown mule wire ,acc. white to white, main, thick black white to thick black white . now predator start switch has a loop wire black white ground to frame.

And a plug wire black white, this needs to be run from the front start back to the pedator motors plug, Also a small black white wire. job done ride

FYI the predator motor at low idle charges like crap!!!!!! switch to led lighting. Charges fine at speed .

Will do 4 wheel burn outs in 4x4 and can drift like a go cart in 2x4 .

oh last thing for 700$ out the door vs 2500 for a 22hp kawa or kholer motor theses are awesome.

that said they are less than a year old spend the extra 140$ on the 1 year it dosent smell right give me another engine warrenty
S.C.H
 
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