What part is this?

[Mastiff1776]

 

[Mastiff1776]

I found this part laying wedged between the engine and carb on my 2007 mastiff. I dont see anything missing on the bike. I guess someone accidentally left it laying there at some point.

Any idea what it is?

Thanks

 

[TreeGuru]

Spike Engine Mount Nut with 2 Dowel Pins for the 2007 Mastiff.

 

[Mastiff1776]

thanks. Is it a decoration thing? The bike is running fine without it.

 

[Mastiff1776]

I found this spot under the tank that looks like something could go in there. Not sure?

 

[Mr. Wright]

It's the nut for the upper engine mount.

 

[Mastiff1776]

So far I cant find where it goes on the bike. Will it hurt anything not being on there?

In the above picture where I'm pointing to a hole under the tank, is that it?

 

[Mastiff1776]

After further research I believe that is the upper engine mount I posted in post 5.

Am I missing a bolt?

 

[Mickmorris]

After further research I believe that is the upper engine mount I posted in post 5.

Am I missing a bolt?

Yes it definitely appears your missing the bolt & yes it is important. Probably shouldn’t ride it until you have that replaced.

 

[mleach72]

After further research I believe that is the upper engine mount I posted in post 5.

Am I missing a bolt?

Yes, I think bolt on the Mastiff is 1/2"x20x1 3/4" allen head, chrome if you can find one. On other models, the bolt threads into the mount, and no nut is used. The Mastiff has the nut on the end of the bolt. Are there threads in the engine mount? If there is, I'm not sure why they used the nut. Maybe for decorative purposes.

 

[Mastiff1776]

Thanks. So just get one of the bolts mentioned and put it through the hole and tighten the nut down right? I dont think there is threads in the mount so i guess just that nut holds it

 

[Mickmorris]

Thanks. So just get one of the bolts mentioned and put it through the hole and tighten the nut down right? I dont think there is threads in the mount so i guess just that nut holds it

Yes add blue loctite the threads. May have a torque spec for that also. I am at work but will look on my sheet when I get home to be sure. Will let you know later unless someone else chimes in. I think the ‘07 mastiff has a spacer that goes in there too.

 

[mleach72]

Thanks. So just get one of the bolts mentioned and put it through the hole and tighten the nut down right? I dont think there is threads in the mount so i guess just that nut holds it

Ok, that makes sense then. I think Mick is right. There is some kind of a spacer on the Mastiff, IIRC.

 

[Mastiff1776]

Thanks guys for all the help.

I wonder if washers could be used instead of a spacer?

 

[mleach72]

Thanks guys for all the help.

I wonder if washers could be used instead of a spacer?

Bigdogpartskingpin.com has the spacer. You could probably get something from the hardware store that would work, if you know how thick it needs to be.

BIG DOG MOTORCYCLES OEM UPPER ENGINE MOUNT SPACER - 2007-11 MASTIFF &

NEW OEM BIG DOG MOTORCYCLES OEM UPPER ENGINE MOUNT/COIL COVER SPACER SPACER 3/8" RAW ALUMINUM. PROUDLY MADE IN THE USA! If you lost your upper mount bolt, you probably lost this spacer which you need to line up the coil cover with the upper engine mount. Part #20 in the exploded view (Image...

www.bigdogpartskingpin.com

 

[Rottweiler]

There you go. All the information you need.

 

[Mastiff1776]

I got my bolt kit in from bigdogpartskingpin and none of it seems to fit.

The bolt would have to be about 2 inches longer to go through the coil cover, through the engine mount and then put the spike in the other side.

I have no idea what is going on.

 

[mleach72]

I got my bolt kit in from bigdogpartskingpin and none of it seems to fit.

The bolt would have to be about 2 inches longer to go through the coil cover, through the engine mount and then put the spike in the other side.

I have no idea what is going on.

Hmm, is the bolt 1 3/4"?

 

[Mastiff1776]

Yes it is.

 

[Mastiff1776]

Yes it is. 1 3/4"