V-8 Engine mount / vibration isolation Options

[drive-ability]

I know most of you guys have Porsche engines but most have a lot good ideas about most power plants. I have a V8 car and from the start my goal was to make it a reasonably comfortable driving car. One of the things I am looking at is adding more engine mounting points. I have a Renegade set-up and am thinking of installing a set of 911 engine mounts where the engine cross-member connects to the body. Thats as I understand the factory 4 cyl is done. Not using 911 mounts but similar. My question is about where the vibration comes from, at what point is it transfered the most. I wonder how much is transfered through the drive axles? You could have a great set of engine / transmission mounts and still get a lot of vibration via the axles. What do you guys think on the subject..? I know using the 911 mounts on the Renegade cross-member will introduce more forward / aft movement but the 911 mounts seem to have a firm hold on my transmission. (IMG:http://www.914world.com/bbs2/html/emoticons/welder.gif)

[Dr. Roger]

QUOTE (drive-ability @ Feb 21 2006, 08:49 PM)

QUOTE (marks914 @ Feb 21 2006, 06:32 PM) This is what I did.  If you use the solid 911 mount, you do not have to modify anything.  It bolts right in at the same height.  No problems hitting the firewall beacuse there is less movement. Mark The reason I am asking is because I wish to use the non-solid mounts. I don't think the skimpy block mounts isolate much vibration. They work great but there is still a lot of vibration running down the long cross-member.

Truth be told, I originally set my V8 up like this. After ONE drive the rubber mounts came off as it threw shifting, engine movement, and ride height off. (Hey, a brother's got to try. Right? LOL...)

I would not suggest going this route.

Heck, even with my radical cam I'm mor ethan satisfied with the vibration dampening of the motor mounts as they are.

If your V8 is not idling smoothly and your not running a radical cam, then you've got other problems. Really.