Anyone have solid motor mounts?

wicked93gs · Jun 21, 2009

Just curious as to how bad they really are in a classic mustang...I'll be using a 4.6L engine so it will be a good deal smoother at idle than a pushrod, but I am looking for impressions from anyone who has them in a classic mustang. I have solid mounts in my Neon and actually dont mind them at all, the engine is nice and smooth, and the only time the vibration is noticeable is at some part throttle areas, and the vibration itself doesnt bother me....the only annoying thing is the rearview mirror vibration(have to use my side mirrors) the mustang wont be a daily driver, so if its no worse than the neon, its perfectly acceptable....the one other thing in the neon is...the exhaust is quiet, but the solid mounts transmit engine noise to the frame, amplifying the sound of the engine inside the car almost to the point it becomes annoying(just not quite) I'm looking for feedback similar to that

blown65 · Jun 21, 2009

I welded brackets on the driver side of mine but left the other side stock. I couldn't really tell a difference except not twisting the motor over under load.

brianj5600 · Jun 21, 2009

I had a friend with solid motor mounts and a 393 and I could hardly tell it had solids. I am curious why a 4.6 has less vibration than a push rod motor? They are both 90* V8s and a 4.6 has a longer stroke than a 351 and rods about as long.

Cobra ssc · Jun 21, 2009

You will be fine, just don't use a solid tranny mount also...

wicked93gs · Jun 21, 2009

wasnt planning on a solid tranny mount..but anyway, thanks for the input...I think I'll make some solid mounts...which simplifies my install somewhat

mrmustangman357 · Jun 21, 2009

if you are fabing from scratch why not put a poly bushing link in?

wicked93gs · Jun 22, 2009

I had considered that, but just cant seem to find ones that looked like they might be big enough...or any really good options for that matter....not to mention no one has any locally, so it would be either hit or miss with anything I ordered without knowing what I really needed

5280/4 · Jun 23, 2009

i have stock configuration mounts on my falcon but with aluminum rectagular extrusion instead of rubber. so an easy way to make solid motor mounts. on my 65 mustang i bought ron morris motor mounts. both have small block fords but are high reving and no vibration transfer to the chassis

TD68302 · Jun 23, 2009

I took brand new rubber mounts, drilled 3/8" holes through them installed 3/8" grade 8 nut & bolts, turning them into soild mounts because they can't flex. I did not notice much of a differance, I have no problems with them. I like them and much cheaper then soild monts.

2+2GT · Jun 24, 2009

TD68302 said:
I took brand new rubber mounts, drilled 3/8" holes through them installed 3/8" grade 8 nut & bolts, turning them into soild mounts because they can't flex. I did not notice much of a differance, I have no problems with them. I like them and much cheaper then soild monts.

That's a tried and true back-country fix. If you put a rubber bushing under the bolt head at one end, it doesn't even make the mount more harsh.

wicked93gs · Jun 24, 2009

well, I dont really have that option with a 4.6L....to me its cheaper by far to make solid mounts than even stock motor mounts cost(things are cheap when you custom fab everything from plate steel)

2+2GT · Jun 24, 2009

Seems like it would be a simple matter to fab brackets that would attach to the stock 4.6 Mustang mounts

wicked93gs · Jun 25, 2009

It was simple, until I got to the driver's side....the problem is the steering linkage...which when used with the stock motor mounts kinda tends to go right through where the bracket needs to be, that picture shows mounts of the type that might be found on a crown vic, or possibly a mustang, I have mark viii mounts, which are completely different and mount straight down as opposed to a 45, the same type of mounts that are on T-birds with 4.6L engines...it would be simple to buy some mustang mounts....but the dealer wants $200 a piece, which is ridiculous when I can just make my own...besides I dont really want stock rubber mounts anyway, I would prefer better power transfer...I'll take some pictures tonight of what I am wrking with so far

2+2GT · Jun 25, 2009

wicked93gs said:
...it would be simple to buy some mustang mounts....but the dealer wants $200 a piece, which is ridiculous when I can just make my own...besides I dont really want stock rubber mounts anyway, …

Well, you must be shopping the wrong places, the 2004 mounts are $28.79 each at Rock Auto.

Why don't you want "rubber" mounts? The way they are constructed I doubt you'd get 1/4" of movement even at max torque, and they're indestructible by federal law. If that's too much movement, you could get urethane mounts for $140 for the pair from Summit.

wicked93gs · Jun 25, 2009

ok, here is what I have...this is the mark viii mount with a frame bracket i fabbed for the passenger side

you cant really see it but it mounts vertically...the whole assembly takes up a good deal of space and I am unhappy with it

this is the drivers side space I have to work with

front of engine

from up under where the exhaust manifold will be

very limited space here, the steering linkage is almost certain to interfere with any similar mount over here

so I picked these up today...

I think they are from a crown vic or something along those lines...I think they will adapt more easily to my application than the huge mark vii ones(I will try them as they are and if I am unhappy with the flex I will weld plates to make them solid, or possibly take the inserts out and re-pour them with Urethane

on another note...I noticed the crown Vic oil filter/water pipe assembly was also better...it didnt have the oil pressure sensor extension sticking so far down it hits the steering rack...it also puts the water pipe at a better location

wicked93gs · Jun 26, 2009

2+2GT, just curious as to whether thats a pic from your car...if not would you happen to know whose it is? I am curious as to the distance between those two pieces of tubing...also it looks like 2" tubing, trying to figure out if thats the case....trying to do the numbers and see where my mounts will end up...right now after test fitting the driver's side mount it still looks close to interfering with the steering linkage unless I re-design it again

2+2GT · Jun 27, 2009

wicked93gs said:
2+2GT, just curious as to whether thats a pic from your car...if not would you happen to know whose it is? I am curious as to the distance between those two pieces of tubing...also it looks like 2" tubing, trying to figure out if thats the case....trying to do the numbers and see where my mounts will end up...right now after test fitting the driver's side mount it still looks close to interfering with the steering linkage unless I re-design it again

No, not my car. I do have access to a 66 with a 4.6 DOHC in it, but the custom headers make the mounts a little hard to see. Am am wondering how the motor mounts interfere with the steering, though.

wicked93gs · Jun 27, 2009

look at the picture with the oil filter and the steering rack splined end...there really isnt much room...there is maybe 1/2 inch between the spines on the rack connection and the motor mount

wicked93gs · Jun 28, 2009

alright, an update, this is what I came up with....this method gave me the most clearance for the steering linkage...I have a feeling the header over here i going to be a PITA too, I'll have to twist it around the linkage somehow, anyway some pics

note the rough notch for the steering linkage