Technical Floater Motor Center Bolts Loose

Good Afternoon,

I need some help from some of you smart folks... I have a Model A with a Model B engine. It has special floating mounts. When inspecting everything, I found the center bolds very loose. They have lock nuts on them, so they aren't going anywhere. However, both side's nuts are so loose I can move them around freely by hand.

Should they be loose? If not, does anyone have a spec on how tight I should make them?

Thanks in advance, -D

 

I think I recall reading that they are supposed to be slightly loose feeling on the float-a-motor mounts, to help reduce vibrations. If the vibration situation is under control and the nuts are not backing off I would say it is working as intended.

There is no spec because the sweet spot varies on an individual basis.

 

Side bolts need to be as tight as a bulls ass in fly season, not finger loose.
The center bolt is to keep everything captured in one place, which it would do if the side brackets fell off....
but what would hold up the engine and transmission then?

 

Thanks, gents. I did find the instruction manual on Snyder's website. And what you both said is correct: Tight as a bull's ass and center bolt just starting to compress the rubber... "Tighten until biscuits are just starting to compress. Do not overtighten!"

For others finding this, here is the link: https://www.snydersantiqueauto.com/Resources/en/ItemDocuments/A_5089_FAM/A5089FAMNEW-9533.pdf

 

Use the "Goldielocks" specification. Not too tight; not too loose; but just right.

 

My '31 Roadster pickup has float-a-motors and I tightened the center bolt once. Vibrated alot. I have mine where I can just turn the bolt with difficulty with my bare fingers. Works best that way for me. I don't run the B type front mounts as those keep the A frame from being able to flex properly.

Dave