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 Need some advice on motor swap 
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Post Need some advice on motor swap
Hey guys I need some help,my battery on my boat shorted out caught fire and burned the transom and my 16hp vanguard to a crisp,my godevil tail is fine I need a new ujoint and upper bearing,but other than that it looks good.

I was looking at the 22hp predator from harbor freight,it looks like it may bolt right up,im still rattled up over the whole thing and head is not clear atm,and just need a few pointers if I do the swap shaft height,bolt pattern,pto shaft size comparision.

No insurance on my old baby and out of pocket on this,any help or guidence much appreciated.

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Mon Jul 06, 2015 3:45 am
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Post Re: Need some advice on motor swap
I should have mentioned I am looking at the vtwin predator 670cc

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Mon Jul 06, 2015 3:54 am
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Post Re: Need some advice on motor swap
Do it! But buy the protection plan don't forget to use the 20% off coupon code. Google it. Those are what I use on my longtail builds. If you fuck em up with the protection plan. Harbor freight will send you a new one no questions asked. Follow breakin procedures.

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Mon Jul 06, 2015 4:23 am
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Post Re: Need some advice on motor swap
Incredible motors for the money. It is an exact clone of the honda gx670 so the parts are interchangeable and easy to find

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Mon Jul 06, 2015 4:24 am
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Post Re: Need some advice on motor swap
Shipped with the coupon code, and without protection plan. Motor is 525 8-);)

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Mon Jul 06, 2015 4:27 am
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Post Re: Need some advice on motor swap
Thanks,thats not bad at all, my biggest concern is if the pto height is the same as the 16 vanguard

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Mon Jul 06, 2015 5:33 am
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Post Re: Need some advice on motor swap
I'm not sure about that being it's a decent bit bigger than a 16hp. But if you want a similar motor the duromax 16hp is only like 300. But if the geometry works why not go with the 22hp ya know?

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Mon Jul 06, 2015 7:38 am
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Post Re: Need some advice on motor swap
The shaft size is 1 inch still on the 670 predator sk that won't be an issue for you

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Mon Jul 06, 2015 7:39 am
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Post Re: Need some advice on motor swap
Height to the center of the pto shaft from the bottom of the motor is 5.25"

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Mon Jul 06, 2015 7:45 am
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Post Re: Need some advice on motor swap
Just did the research for ya. Your old motor pto height is 5.25" too. Go for it man!!!

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Mon Jul 06, 2015 7:48 am
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Post Re: Need some advice on motor swap
bigticket, if you wait a minute, I believe jakehawk9 will go buy you one and install it, he's getting excited. :lol:

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Mon Jul 06, 2015 7:51 am
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Post Re: Need some advice on motor swap
Sorry woke up early today had too much coffee, having a baby today. Excited is not a big enough word, I'm frcken jacked lol

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Mon Jul 06, 2015 7:53 am
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Post Re: Need some advice on motor swap
Congratulations man, that's enough to get anyone jacked up! Hope all goes well for ya!

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Mon Jul 06, 2015 7:55 am
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Post Re: Need some advice on motor swap
Thanks man

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Mon Jul 06, 2015 7:57 am
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Post Re: Need some advice on motor swap
Thanks jake and congrats :-) I did some measuring,I and your right it looks like a direct bolt on. Weather here in sw arkansas has been crazy stormy and when I watched my dvr security camera looks like my crank battery thats about a year old internally conbusted,no smoke or warning just shot a flame out the side ignited my wire harness and went from there,all these years I used the bottom of a plastic 55 gal drum to cover my motor,I will not ever do that again. Damn thing was fully engulfed in less than 2 mins.

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Mon Jul 06, 2015 11:40 am
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Post Re: Need some advice on motor swap
That sounds crazy. I have the exact same unit (16hp B&S) that I contemplated changing out with the predator until I finally got all the problems figured out. I will be very interested to see what differences you see.


Mon Jul 06, 2015 12:48 pm
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Post Re: Need some advice on motor swap
Thanks bigticket. Glad I could help ya. I had time to kill while we're waiting for my wife to go into labor. Still waiting. It's almost show time

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Mon Jul 06, 2015 2:07 pm
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Post Re: Need some advice on motor swap
Sorry about your motor and boat btw, that's rough. Hope you get her up and rebuilt soon. I'm going to arkansas later this week to pick up my boat, then I'm building the motor. Busy times in the hawk house

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Mon Jul 06, 2015 2:15 pm
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Post Re: Need some advice on motor swap
Called Donna at godevil this morn to order parts,she is a wonderful and very helpful lady, she helped me get a parts list (gonna go ahead and put all new bearings,seals,and yoke in )and it looks like for the clone in going to need a flap plate mount and a green engine key. And jake btw thank you again for info,very helpful.

Also did you have a boy or a girl? I have 2 teen daughters that love to duck,deer hunt and esp frogg gig :) happiest moment of my life to see them be born.

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Tue Jul 07, 2015 8:00 am
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Post Re: Need some advice on motor swap
We had a little girl

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Tue Jul 07, 2015 8:50 am
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Post Re: Need some advice on motor swap
No problem glad I could help you

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Tue Jul 07, 2015 8:51 am
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Post Re: Need some advice on motor swap
I swapped a Honda GX 630 for my old, tired B&S 16 no problem, pretty much a straight swap.


Wed Jul 08, 2015 6:35 pm
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Post Re: Need some advice on motor swap
So the boat burned up and the only thing that survived is the GoDevil frame? :lol:
I'll just put one in the win column for the GD vs BW debate.


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Thu Jul 16, 2015 9:39 am
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Post Re: Need some advice on motor swap
Yea the motor got hot enuff to turn oil to crispy grease inside it was a total loss frame just burned around the upper bearing area with the grease,but I do have it all back together with new parts and its good as new,

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Fri Jul 17, 2015 11:50 pm
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Post Re: Need some advice on motor swap

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Fri Jul 17, 2015 11:51 pm
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Fri Jul 17, 2015 11:52 pm
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Post Re: Need some advice on motor swap

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Fri Jul 17, 2015 11:53 pm
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Post Re: Need some advice on motor swap

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Fri Jul 17, 2015 11:54 pm
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Post Re: Need some advice on motor swap
Got it all camo now just primer in the pics but ill post the finished soon as I get my boat welded back up

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Fri Jul 17, 2015 11:55 pm
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Fri Jul 17, 2015 11:56 pm
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Post Re: Need some advice on motor swap
The above is whats left of the battery.

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Fri Jul 17, 2015 11:57 pm
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Post Re: Need some advice on motor swap
Update:: got the predator 670cc installed on my 16 hp godevil frame,1436 light hull boat.

Easy change over everything was pretty much a direct bolt on fit and motor is a night and day performance upgrade with a lot less vibration,overall its a really decent motor for the price.
I had to fiddle with the governer spring and adjust governer to keep it from fighting against itself on revs,i gained about 4/5 mph per gps on phone with wife in boat 22/24 mph with new stiffer gov spring it turns about 3900 revs in water it seems strong enuff to run that all day long.



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Mon Aug 03, 2015 12:30 am
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Post Re: Need some advice on motor swap
NICE


Mon Aug 03, 2015 1:04 am
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Post Re: Need some advice on motor swap
Thank you :-)

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Mon Aug 03, 2015 1:40 am
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Post Re: Need some advice on motor swap
How much did it cost you in parts to mount your new motor to your frame plus the new bearings

I am about to do this myself
Im glad you put your neck out to do it first


Tue Aug 04, 2015 3:37 pm
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Post Re: Need some advice on motor swap
That thing turned out great.


Thu Aug 06, 2015 2:14 pm
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Post Re: Need some advice on motor swap
Thanks guys,
the motor and u joint bolted right on direct fit, go devil recommended a new flap plate for the 22 but I could have used my old one,the lower and upper seals,brass bushing and bearing and a new grease cup,and engine and yoke keys was right around 140.00 but I had extra cost due to replacing cup and flap plate I could have saved 80.00 just on those 2 items.
If I didnt have to rebuild frame it would have been the cost of a couple engine and yoke keys and maybe new bolts to hold motor down.



One thing to note,the pto shaft on motor is about a 3/4in longer than the briggs,I didn't have to cut it to length but it fits close to u joint,didnt give me any probs tho press fitting it back on,runs fine atm any problems tho ill have to cut it down.



Hold my beer and watch this!

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Thu Aug 06, 2015 2:40 pm
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Post Re: Need some advice on motor swap

Got a couple new governor springs,from a honda gx670 looks like a exact fit and a little better than stock. About 8.00 from my local small engine shop.

Hold my beer and watch this!

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Thu Aug 06, 2015 2:57 pm
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Post Re: Need some advice on motor swap
Hope this info helps anyone out there looking to do this with the predator/godevil ,there is absolutely 0 info google searching.

Hold my beer and watch this!

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Thu Aug 06, 2015 3:20 pm
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Post Re: Need some advice on motor swap
When i called go devil yesterday, he said the flat plate would bolt down
Did you have to weld yours


Thu Aug 06, 2015 5:45 pm
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