Engine mounting opinions.

joejoeguns · 01-08-2013, 05:57 PM

I've started working on my G1 sled motor conversion, I've made up a custom 1pc. motor mount/jack shaft setup (I'll put up some pics in a build thread when I get further along).
The motor is a 1980 Enticer 340 rated at 30 HP. Are rubber motor mounts a must or would I be safe to solid mount it? I found some dual post isolator blocks but I'd rather not use them unless most feel it a must.Thanks.

bigkid · 01-09-2013, 07:01 PM

I would mount it in rubber. Polaris ATV mounts work good. If the motor torques too much you can always mount a torque rod to limit the movement

pachanga90 · 01-09-2013, 08:36 PM

The only problem with rubber-mounts and torquey motors is that they can raise havoc with belt-tension.

Larboc · 01-15-2013, 10:46 PM

Quote:

Originally Posted by joejoeguns

I've started working on my G1 sled motor conversion, I've made up a custom 1pc. motor mount/jack shaft setup (I'll put up some pics in a build thread when I get further along).
The motor is a 1980 Enticer 340 rated at 30 HP. Are rubber motor mounts a must or would I be safe to solid mount it? I found some dual post isolator blocks but I'd rather not use them unless most feel it a must.Thanks.

I am using the stock mounts for the 540 yam. SRV that were on it in the sled. Probably the same as yours, a stud out each side. Pretty hard to argue that the factory mounts won't work!

If you don't you're going to have bolts loosening and extra noise and vibration to deal with.

joejoeguns · 01-16-2013, 09:03 PM

Yea I went ahead and rubber mounted it.If you look closely you can see them under the motor mounts.The last 2 bolts are limiters to keep the torque from ripping my mounts.Unfortunately I didn't start this,I'm just finishing a lame attempt.This is where I'm at thus far.
I ran into clearance issues with the body so I'm gonna have to switch the axle to the top side of the swing arm so I can lift the body.Just got the exhaust mocked up today(harder than fitting the motor)

sho305 · 01-19-2013, 02:56 PM

Nice jackshaft setup you have there!

Clearance to the engine? Can you move the whole engine/shaft mount plate lower on the frame? You can lower the clutch long as you can still get the belt on it.

Tonka329 · 01-20-2013, 05:02 PM

Looks good

Chad Pickens · 01-30-2013, 11:22 AM

my rotax 500 ripped new rotax factory mounts into pieces I had to solid mount it

joejoeguns · 01-30-2013, 10:21 PM

Thats good to know,thanks.I had to move some things around on mine to make some room,I'm gonna end up solid mounting it.Bonus I gain a inch of head room/ travel.

tony-g1 · 02-03-2013, 10:29 AM

I just put a yamaha bravo motor in a 84 G1, I tried solid mount but I am doing back to rubber motor mounts, The vibration is so bad.

01-08-2013, 05:57 PM	#1
joejoeguns Not Yet Wild Join Date: Nov 2012 Posts: 26	Engine mounting opinions. I've started working on my G1 sled motor conversion, I've made up a custom 1pc. motor mount/jack shaft setup (I'll put up some pics in a build thread when I get further along). The motor is a 1980 Enticer 340 rated at 30 HP. Are rubber motor mounts a must or would I be safe to solid mount it? I found some dual post isolator blocks but I'd rather not use them unless most feel it a must.Thanks.
joejoeguns Not Yet Wild Join Date: Nov 2012 Posts: 26

01-09-2013, 07:01 PM	#2
bigkid Getting Wild Join Date: Oct 2012 Location: north central, indiana Posts: 105	Re: Engine mounting opinions. I would mount it in rubber. Polaris ATV mounts work good. If the motor torques too much you can always mount a torque rod to limit the movement

01-09-2013, 08:36 PM	#3
pachanga90 I Refuse To Get Stuck!!! Join Date: Jun 2010 Location: Hilton,NY Posts: 5,427	Re: Engine mounting opinions. The only problem with rubber-mounts and torquey motors is that they can raise havoc with belt-tension.

01-19-2013, 02:56 PM	#6
sho305 Vegas modded 420 Join Date: Jun 2009 Location: West MI Posts: 15,445	Re: Engine mounting opinions. Nice jackshaft setup you have there! Clearance to the engine? Can you move the whole engine/shaft mount plate lower on the frame? You can lower the clutch long as you can still get the belt on it.

01-20-2013, 05:02 PM	#7
Tonka329 Smoov az a gravy sammich Join Date: Oct 2008 Location: Limestone, Illinois Posts: 3,462	Re: Engine mounting opinions. Looks good

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01-30-2013, 11:22 AM	#8
Chad Pickens Gone Wild Join Date: Aug 2011 Location: Indiana Posts: 187	Re: Engine mounting opinions. my rotax 500 ripped new rotax factory mounts into pieces I had to solid mount it

01-30-2013, 10:21 PM	#9
joejoeguns Not Yet Wild Join Date: Nov 2012 Posts: 26	Re: Engine mounting opinions. Thats good to know,thanks.I had to move some things around on mine to make some room,I'm gonna end up solid mounting it.Bonus I gain a inch of head room/ travel.
joejoeguns Not Yet Wild Join Date: Nov 2012 Posts: 26

02-03-2013, 10:29 AM	#10
tony-g1 Getting Wild Join Date: Oct 2009 Location: mich. Posts: 90	Re: Engine mounting opinions. I just put a yamaha bravo motor in a 84 G1, I tried solid mount but I am doing back to rubber motor mounts, The vibration is so bad.

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