Pros and Cons to Solid Mounts
 

What are the pros and cons of soild engine, differential and tranny mounts?

All I can see is less slop and more vibration, are they worth it?

Don't forget solid end links & bodylinks. Their for racing only. Go with aftermarket polyurethane and Mazdaspeed competition rubber motor & tranny mounts.

I think id like to go with the polyurethene engine mounts now available over the Mazda Comp ones im currently employing.

i have solid engine and tranny mounts, about to get me a solid diff mount too. alot of people were telling me it would be too much stiff and everything would vibrate, this and that. its just fine imo.

How diffferent are they compared to stock? I was thinking of atleast getting a solid diff mount and the rubber mount that goes in the tranny brace, pop taht out and press in a solid mount.

I dont know if I'd go with a solid diff mount, wouldn't it snap from no flex? I've been interested in going to all solid mounts and bushings myself..

MY experience with solid mounts. YMMV.

At the end of last year my engine mounts on both sides were finally trashed. This spring I was broke so I decided to replace both of the pucks with a bolt and a piece of 2x4.
Impressions: releasing clutch moves car much more quickly.

vibration: nonexistant. WTF was everyone talking about with this? I didn't notice any more, not even in the mirrors.

My diff mount lasted about 3 weeks once I did this, though... oops. :)

the car is much nicer to drive at low (near idle in 1st and 2nd) speeds, now, too.

this is a good thread.

Too many people on the internet have it ingrained in their heads that everything must be solid to be good. Solid mounts are good for track cars, but there needs to be some sort of give, be it in parts of the suspension or engine mounts.

Solid mounts can lead to subframe damage-- instead of the bushing or rod giving, the stress will be transferred the frame of the vehicle which is more expensive to repair/replace.

this is why tie rods are made to break-- it is less expensive to replace a tie rod than it is to replace a steering rack.

solid engine mounts are a bit overkill for a street car

Actually, solid mounts would be less likely to break due to lack of flex. The flex is transferred into the chassis instead of the rubber or poly mounts. You only put more stress on the chassis if anything, which is not necissarily a bad thing or a good thing. Depends on what you want

Terrh, if I got you right, you broke your diff mount because of the solid engine mounts?

Sorry, thats what I meant, for a lack of better terms, I've been a retard all weekend from doing so much homework. :) I think I've read about people having to weld the subframe from the diffmount breaking off on FC's, but I may be mistaken..