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Unread 07-22-2009   #1 (permalink)
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Default Solid motor mounts?

I'm thinking about converting to solid motor mounts, since I've been breaking rubber ones faster than i can install them ever since my engine swap six months ago.

What I want to know is are they tolerable in a street car that i have to drive to school a few day per week?

Is it normal to be breaking the rubber mounts like crazy? I'm putting about 350hp at the flywheel.
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Unread 07-22-2009   #2 (permalink)
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No it's not normal.
You have some type of issue, but without seeing your car or how you drive it that would be hard to determine.

Have you tried poly mounts?

Whoever put the engine in my car before I bought it used a solid mount on the driver's side and a rubber mount on the passenger side.
So far (about 8 years now) that setup has given me no trouble whatsoever. My car puts out 405 at the flywheel.
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Unread 07-22-2009   #3 (permalink)
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I have the convertible style rubber mounts (the ones that look like the urethane ones) and it always pushes the right side mounts out the bottom of the rubber pieces.

Do you get lots of vibration with the solid mount in there?
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Unread 07-22-2009   #4 (permalink)
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vibration is relative.......

i have them in my car the only thing i notice you feel bumps in the road a little more

trust me you won't break them......
 
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Unread 07-22-2009   #5 (permalink)
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Thanks for the answers guys. I'm looking at the Maximum Motorsports solid motor mounts now, does anyone else know of any other good brands to go with?
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Unread 07-22-2009   #6 (permalink)
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Quote:
Originally Posted by bdbolling19 View Post
Thanks for the answers guys. I'm looking at the Maximum Motorsports solid motor mounts now, does anyone else know of any other good brands to go with?
I have never noticed any undue vibration, but then my car has two chamber Flowmasters on it. It is pretty loud and the drone probably cancels any vibes I might feel otherwise.

As far as solid steel mounts, I'd just find the least expensive set I could. As long as they are not overseas inferior steel they should work just fine.

Luck
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Unread 07-22-2009   #7 (permalink)
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Quote:
Originally Posted by bdbolling19 View Post
Thanks for the answers guys. I'm looking at the Maximum Motorsports solid motor mounts now, does anyone else know of any other good brands to go with?

I don't understand that. I personally would not use solid mounts on a street car.

I ran convertible mounts in all my Fox cars and never had one fail. Including the car below, that ran as fast as 8's in the 1/4 mile (when I front halved the car I went with plates, but prior used convertable mounts).

Are you using Ford mounts? Do you have things OK elsewhere like a good trans mount and proper driveshaft angle to the rear end?

Tom

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Unread 07-22-2009   #8 (permalink)
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I just happened to think of something.
You don't have any oil/fuel leaks that might be dripping on the mounts do you?
That would definitely have an adverse effect on the rubber.
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Unread 07-22-2009   #9 (permalink)
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Quote:
Originally Posted by bdbolling19 View Post
Thanks for the answers guys. I'm looking at the Maximum Motorsports solid motor mounts now, does anyone else know of any other good brands to go with?
take a look at the moroso mounts......
 
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Unread 07-22-2009   #10 (permalink)
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The mounts are in good shape other than being broken... no leaks on them at all. Never considered the trans mount though, I know it's soaked in gear oil because the tranny leaks like a screen door; I have to re-fill it every 1000 miles.

The motor mounts are not Ford mounts, just Kragen/Napa replacements, I always have to grind the little tab off of them because they all have that little tab for the 84+ cars. What year of Ford mounts should I be looking for that won't have the little tab?
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Unread 07-23-2009   #11 (permalink)
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Quote:
Originally Posted by bdbolling19 View Post
The mounts are in good shape other than being broken... no leaks on them at all. Never considered the trans mount though, I know it's soaked in gear oil because the tranny leaks like a screen door; I have to re-fill it every 1000 miles.

The motor mounts are not Ford mounts, just Kragen/Napa replacements, I always have to grind the little tab off of them because they all have that little tab for the 84+ cars. What year of Ford mounts should I be looking for that won't have the little tab?
The 83 & earlier mounts are probably what you want.
Try replacing the trans mount with a polyurethane mount. They are more oil resistant than rubber.
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Unread 07-23-2009   #12 (permalink)
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If your mounts are getting chemical soaked like that, then yes, they'll push out.

As for the solid mounts, it'll transfer more vibration to the drivers compartment. It depends on how much you can tolerate like with exhaust dumps. Some don't mind the obnoxious blaring exhaust while some don't like shouting to the passenger to have a conversation. Solid mounts are the same way, are you willing to have more vibrations?
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Unread 07-23-2009   #13 (permalink)
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are you willing to have more vibrations?
That will depend on the affect it has on the passenger of the opposite gender........
 
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Quote:
Originally Posted by RLG34750 View Post
That will depend on the affect it has on the passenger of the opposite gender........
Which...............................could be positive and interesting to watch.
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Unread 07-23-2009   #15 (permalink)
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Quote:
Originally Posted by bdbolling19 View Post
The mounts are in good shape other than being broken... no leaks on them at all. Never considered the trans mount though, I know it's soaked in gear oil because the tranny leaks like a screen door; I have to re-fill it every 1000 miles.
If the trans bounces around on a bad mount it is really tough on many things, including front mounts.


Quote:
The motor mounts are not Ford mounts, just Kragen/Napa replacements, I always have to grind the little tab off of them because they all have that little tab for the 84+ cars. What year of Ford mounts should I be looking for that won't have the little tab
All the mounts I bought had that tab. I just modify the cross member but you have an engine in the way. The problem has to be the quality of the aftermarket mounts or the loose trans mount.

I'm serious. I ran low ET and pulled the front wheels way up with the Ford mounts. I'm not a big fan of solid mounts because it makes the block part of the frame. That's bad for many reasons on a street car with thin wall block.

Tom
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