It is currently Tue Jun 24, 2025 11:47 am




Reply to topic  [ 19 posts ] 
 Long Tail Motor Swap 
Author Message
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Long Tail Motor Swap
Newbie here, and MMT seems to have wealth of info floating around so hopefully someone can answer my question. Can I take a Beavertail frame that had a 31HP vanguard (engine blew) and do a 1 for 1 swap with a Honda GX630 without any major modifications to the frame? The shaft diameters are different so the yoke will have to change and the PTO heights have a .012" difference. Thanks for any help in advance.


Sun Sep 13, 2015 8:04 am
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Moto Swap
Ok so I got the new to me frame home. I didn't realize I was getting the blown engine too but maybe I can sell it as a parts motor. I ordered my new GX630 today and need this monster off the frame. I'm have a hard time getting the u joint off. I'm slowly tapping it off the shaft but it'll take a while. Any thoughts or tips? I'm sure there is a very simple way I just have no idea.




Sent from my iPhone using Tapatalk


Thu Sep 17, 2015 9:32 am
Profile
MMT Pro Member

Joined: Sat Dec 11, 2010 6:25 am
Posts: 493
Location: SWGA
Post Re: Long Tail Moto Swap
What's the story on that briggs?


Thu Sep 17, 2015 12:37 pm
Profile
MMT 1000 Club

Joined: Mon Dec 31, 2012 11:07 pm
Posts: 4820
Location: West Monroe, LA
Post Re: Long Tail Moto Swap
Patience and time. It'll come off.

Pm sent


Thu Sep 17, 2015 1:15 pm
Profile
MMT Super Elite Member

Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
Post Re: Long Tail Moto Swap


Thu Sep 17, 2015 1:26 pm
Profile
MMT 1000 Club
User avatar

Joined: Wed Jul 01, 2015 6:06 pm
Posts: 1447
Location: South central, ks
Post Re: Long Tail Moto Swap
Hahahaha.

It's simple. get a mud motor. shoot ducks in the face.


Thu Sep 17, 2015 1:27 pm
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Moto Swap
Guy I got it from said he hit a log and popped the motor out of the water. A short while later Sparks and oil flew everywhere and this was the result. It looks as though the governor spring was disconnected. Maybe it just spun apart?


Thu Sep 17, 2015 3:30 pm
Profile
MMT Super Elite Member

Joined: Fri Dec 18, 2009 8:10 pm
Posts: 16915
Location: Rowlett, TX
Post Re: Long Tail Moto Swap
Only time I've seen that happen, the connecting rod came out the side. Usually a lack of oil thing...


Thu Sep 17, 2015 3:33 pm
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Moto Swap


Fri Sep 18, 2015 1:49 am
Profile
MMT Member

Joined: Sat May 03, 2014 1:44 pm
Posts: 43
Post Re: Long Tail Moto Swap


Fri Sep 18, 2015 9:49 am
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Moto Swap
Yes all the set screws are removed and I filed down the spot welds on the keys. A guy I work with is gonna help me out. We'll use his tractor bucket to slightly lift it and then we are gonna hear the u joint and slowly tap it off.


Fri Sep 18, 2015 12:54 pm
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Moto Swap
Ok wd40 did the trick just fine. I got the new u joint, prop and motor today and what do you think... Yep bolt patter is off and I need about 1" spacers under the motor to match the previous PTO height.


Sent from my iPhone using Tapatalk


Mon Sep 21, 2015 4:05 pm
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Moto Swap
Also where do you guys have your alternator's rectifier mounted? It says not on the engine for vibration reasons but the only place I can come up with is the u joint cage so not sure if that's any better.


Sent from my iPhone using Tapatalk


Mon Sep 21, 2015 4:07 pm
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Motor Swap
Got it all done. That Honda runs like a dream. It pushed me and two other grown men up river at 12 mph (my boat is a barge and really plows) down stream I was getting 15+




Sent from my iPhone using Tapatalk


Tue Oct 06, 2015 6:04 pm
Profile
MMT Pro Member

Joined: Sat Dec 11, 2010 6:25 am
Posts: 493
Location: SWGA
Post Re: Long Tail Motor Swap
Hell yeah man! Like the cowling too

What RPMs are you at WOT?


Tue Oct 06, 2015 7:20 pm
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Motor Swap
Thanks my neighbor does vinyl for cars had it laying around. I'm at 3600 ish WOT with a 9x5 hill prop


Sent from my iPhone using Tapatalk


Tue Oct 06, 2015 7:31 pm
Profile
MMT Member

Joined: Sun Aug 10, 2014 10:23 pm
Posts: 11
Post Re: Long Tail Motor Swap
Very nice build / swap.

Do you mind to find out who makes the vinyl wrap and name of the pattern?

Thank you in advance!


Wed Oct 28, 2015 7:07 am
Profile
MMT Pro Member

Joined: Sat Dec 11, 2010 6:25 am
Posts: 493
Location: SWGA
Post Re: Long Tail Motor Swap
Never seen a vinyl wrap, but pretty sure that's Max-4. I've seen guys send their cowling off to get dipped (water imaging) and turn out pretty good. It's kinda pricey though.


Thu Oct 29, 2015 4:36 am
Profile
MMT Member

Joined: Thu Oct 16, 2014 1:50 pm
Posts: 19
Post Re: Long Tail Motor Swap
Thanks. It is Max-4. Next time I see him I'll ask about the vinyl. It was just scrap he had lying around.


Thu Nov 12, 2015 8:13 am
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 19 posts ] 

Who is online

Users browsing this forum: No registered users and 62 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: