Ironhead Top Motor Mount/Stabilizer

[Hippysmack]

Here is the IH Motor Mount main page in the Sportsterpedia.
http://www.sportsterpedia.com/doku.p...k:ih:engmech09
Also see this page for 77-81 assembly pics.
http://www.sportsterpedia.com/doku.p...:ih:engmech09t

[BigMek]

Originally Posted by rapierce

Ok, I have the front bracket and I can see where it goes, but it doesn't quite fit because my bike has been hardtailed and I don't think the motor is in the exact same spot, but I should be able to fabricate another bracket easily enough.

If it's "close but not quite", you might be able to tweak the fit with some washers. That's what I had to do with my front bracket.

[spuggy]

Originally Posted by Ferrous Head

Ironheads vibrate. The more solidly you can mount the engine the better.

^^ Yeh, I vote for this.

Long ago, I was concerned just how poorly the motor fitted in the frame. Turned a spacer for a sliding fit on the top mount and added washers where required to engine plates/studs etc until it all could be hand-tightened snug with no movement or big gaps anywhere.

Made a huge difference; much smoother.

[BigMek]

Totally agree spuggy, my '82 hardly vibrates now that I've got everything locked in nice and snug.

I did find, as have many other forum members, that tightening the main rear motor mount first got everything else right where it needed to be.

[jsandidge]

When I first got my 81, the rear mount was broken in half. The front upper mount bolt was missing too. I didn't know about these problems. I'd never ridden any kind of Harley before, but I expected the vibration level to be higher than the Japanese inline 4's I was used too. So, I rode the old Ironhead and thought "I expect vibration, but no manufacturer could possibly do this on purpose." I found the problems and fixed them. I really enjoy the ride now.