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Top rear engine mount

1K views 12 replies 4 participants last post by  Jason Pittenger 
#1 ·
I am putting my engine back in the frame, and there is a gap between the two mounts and the block. What am I missing?
 
#2 ·
#5 ·
I can fit a finger in the gap on either side. Maybe 3/8"? It's considerable. When I try to tighten the rear mount bolt, it only compresses the outer rubber pieces.
 
#6 ·
Wish I could check mine, but still housebound. Seems like there's a gap though. If the rubber does compress, that's the isolation of vibration. It the gap would close, you would feel a lot more vibes.

Just follow torque spec and don't over-tighten to try and close the gap.
 
#7 · (Edited)
#8 ·
I don't have the 16073 washers. I have no recollection or pictures of ever having them. I cannot find the washers anywhere! Pictures online show them as a red/pink color, and the description calls them "insulators".

That's going to transfer a lot of heat into the rubber mounts if I don't have them...

That bolt was also installed from the left side when I bought the bike.

I did discover I had 92075A instead of 92075B in that location. That reduces the gap but doesn't eliminate it.
 
#12 ·
Suspense was killing me so I managed to get to the garage.

Couldn't get a good look at the right side, but on the left side there's a gap you can stack two nickels or three dimes in it.

My top rear bolt comes through from the left, but I think I just decided to do it that way, don't remember why. Easier to get the air ratchet onto the nut, maybe.
 
#13 ·
I ended up putting some grade 8 washers in there to fill the gap. Without it, it wasn't wanting to reach 33 ft lbs without severely distorting the mount.
 
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