View Full Version : add torque struts(dog bones) to 99 seville

11-20-09, 07:20 PM
Well I got tired of replacing the front motor mounts on my 99 seville. As we all know this mount goes out repeatedly probably due to the high amount of heat and torque they are subject to. I got tired of waiting months on end for someone to design produce and sell a solid motor mount to rid me of these problems. So I went searching through numerous of threads finding as much info as possible to why the mounts are so weak . It seems that GM tried to save a few pennies by eliminating the torque struts (AKA DOG BONES) on the newer sevilles. This created a problem. The gm stock front motor mount canít handle too many WOTS or much spirited driving. So I went out to my local pull it yourself auto parts yard in search of some torque struts. I pulled a set off of a late 90s Deville that was a cash for clunkers car.
I made sure to get all the brackets associated with them. I also saw a nice looking 98-99 seville with Beautiful black leather interior which was in better condition than my tan/ shale interior. Needless to say I went back the next morning and gutted the whole car. Back on subject.

After doing some rough measurements it looks like the struts will fit on the motor with some slight modifications to the routing of the power steering return hose and alternator coolant supply hose. http://i125.photobucket.com/albums/p70/smooththg69/Picturell019.jpg http://i125.photobucket.com/albums/p70/smooththg69/Picturell020.jpg

You will have to cut a small piece of to bracket to get it to sit flush on the motor. You might also have to support the upper radiator hose to keep it off of the water pump pulley (my guard is missing). One problem that I did run into is the routing of the fuel and return lines. http://i125.photobucket.com/albums/p70/smooththg69/Picturell024.jpg


to be continued

11-20-09, 08:13 PM
Might try this.

11-21-09, 09:37 AM
I saw your method Ranger I liked it but isn't it rigid ? does it offer any play or give?

11-21-09, 11:10 AM
No play. Mine is rigid, but so are the factory torque struts for the most part. The only play in them is what's in the bushing. I don't think any play is necessary.

11-21-09, 11:33 AM
Very cool project, I'm sure alot of DIYers will like this! Are the bolt holes still on the block to mount the brackets? or are you drilling and tapping new holes?!

11-22-09, 07:50 AM
requires no drilling or tapping almost a bolt on. now im second guessing maybe I should have went with rangers style? well its too late now engines in the car now. FYI I didn't remove the engine to put these on. I had it out to change the rear main seal. more pics later

09-15-10, 05:24 AM
Any updates to this? I would like to see pictures of the install. Also wondering how hard the modification was?

09-15-10, 08:30 AM
Any updates to this? I would like to see pictures of the install. Also wondering how hard the modification was?

What modification ??? The dog bones and mounts are OEM and available (most parts, not all) for the cars that came with them from www.gmpartsgiant.com

Ranger made a simpler set from pipe and brazed fittings for a DEVILLE, not Seville. His pictures are in his thread on the fabrication and installation.

09-15-10, 02:49 PM
The modification to retro-fit some dog bones from a Deville onto a STS. Like if the mounts needed to be cut or whatever. I plan to get them from a junkyard for cheap in case I cant get them to work. And I wanted pics of it in the engine bay, so I could visualize how it went together. I'll start my own thread with pictures once I begin the project
I already saw Ranger's thread and I'd rather go this route. Thanks though.