Small Continental Engine Mount Bushings

[fly_cubs]

Anyone know of a better source for engine mount bushings for a small continental (mine's a C-85)?

I've had two sets of these in the last 150 hours from Aircraft Spruce:

http://www.aircraftspruce.com/catalog/graphics/22387.jpg

It seems if you look at them wrong before you take them out of the bag they will crack. I'm not over tightening them and putting a small amount of Dow DC4 on the bolts before I slide them through. We've also tried a set on other airplanes without the DC4 and it cracks all the same.

Suggestions or just live with the cracks?

Thanks!

 

[d.grimm]

I got some in a major overhaul gasket kit from Fresno Airparts and also got some from Univair.
Big difference in the hardness,
The Fresno ones are rock hard.
Dave

 

[bob turner]

Rubber does not last as long now as it used to. Last time I bought these things they had gotten very expensive as well.

 

[cubunltd]

thank you EPA!!!!!

 

[tempdoug]

www.chiefaircraft.com

 

[Steve Pierce]

Are they sagging or just cracking at the edges?

 

[fly_cubs]

Are they sagging or just cracking at the edges?

Just cracking at the edges.

 

[tempdoug]

Just cracking at the edges.

What torque are you using?

 

[fly_cubs]

Just enough to buldge the rubber a bit- can't remember off the top of my head but I want to say 60-80 inch pounds- I'll check tonight.

 

[tempdoug]

Tim, that sounds right. I think i went with 80 inch pounds. I got mine from chief years ago and i looked at mine today and i dont see any cracks. Probably is different grades of them, i dont know?

 

[cubdriver2]

Just enough to buldge the rubber a bit- I'll check tonight.

I passing on a chance for a darn good joke Tim.

Glenn

 

[Amy]

I passing on a chance for a darn good joke Tim.

Glenn

Awww c'mon Glenn, I'm kinda disappointed now . . .

 

[Steve Pierce]

The cracking seems to be the norm these days. 60-80 in/lbs. is correct for the -8,-12 and -16 models. I have removed some of the cracked bushings and found nothing wrong in the area actually dampening the vibration.

 

[fly_cubs]

Thanks for all of the input- I ordered a set from Chief ($4 each instead or $2 each from Spruce)....hopefully they will be better. I'm going to go ahead and change them out since I already have the exhaust off for some other maintenance- much easier to do. If they crack, I won't worry about it.

And Glenn.....practice what I do....don't listen to a word Amy says (although I find it is often hazardous to my health) :smile:

 

[turbofan]

Spruce mounts are junk(not OEM)......Gotta get OEM Continental from Univair or other OEM source