subframe moving with ALSFB

[Sh03d]

I've been having this problem every since I installed my aluminum subframe bushing.

When you accelerate or let off the gas it feels like the whole carriage is moving. The steering wheel jerks and feels like a busted motor mount. If you look closely you can see where the bottom bushings on the front of the subframe have been scooting around.

Both front and rear mounts are reinforced and unbroken. And it did this with the torque limiters on and off. The washer seems to be squished and not 100% of it is against the bushing. Any experiences like this? I need to fix it.

 

[Rockledge]

I recall a previous thread wherein someone else had similar issues. After a little discussion, I believe it was eventually determined that during installation the holes in the subframe had been enlarged too much, and as a consequence, the subframe was allowed to move around laterally.

Something to think about anyway.

 

[Sh03d]

Sounds about right.

 

[Minnesho]

how are your strut rod buckets? if you can literally see the subframe moving than its probably it, but make sure your strut rod buckets havent broken from the subframe either.

 

[Wht91+]

I've been having this problem every since I installed my aluminum subframe bushing.

When you accelerate or let off the gas it feels like the whole carriage is moving. The steering wheel jerks and feels like a busted motor mount. If you look closely you can see where the bottom bushings on the front of the subframe have been scooting around.

Both front and rear mounts are reinforced and unbroken. And it did this with the torque limiters on and off. The washer seems to be squished and not 100% of it is against the bushing. Any experiences like this? I need to fix it.

Run Sheet metal screws on the outer sides of the bushings to prevent side-to-side movement. on the body side of it. the closer you get to the bushing the better. The thing is is that if you noticed that it was moving you might have to get your fronted alinged. Good luck with that

 

[Sh03d]

how are your strut rod buckets? if you can literally see the subframe moving than its probably it, but make sure your strut rod buckets havent broken from the subframe either.

I will check those. I didn't think a subframe could move that much from the strut rods.

Run Sheet metal screws on the outer sides of the bushings to prevent side-to-side movement. on the body side of it. the closer you get to the bushing the better. The thing is is that if you noticed that it was moving you might have to get your fronted alinged. Good luck with that.

You can see the movement on the bottom bushing (closet to the ground). So I don't know how metal screws would help. And I will definitely need an alignment after this is all done.

 

[Minnesho]

well the subframe wouldnt be moving, but it would make some very loud clunks (i know, mine is broken as we speak), but if you see your subframe is moving, its probably not those.

 

[SHObill]

SHO3d, what SFB do you have? If they are the cup style with the built in space for the SF metal thickness,thats the problem! They may not be squezing the SF as bushings must. I'v seen those SFB that when you put them together out of the car,there is a 3mm gap. If your SF was brand new-no rust ,no wear-& the SF material thickness was actually 3mm you would still not be squezing the SF.
Even if the SF hole was big or the SFB dia. was small, with the right torque & no gap between the loose SFB ,the clamping force will hold the SF from moving. Remove SFB & remove material from top small dia of lower bushing so when put together off the car there is no gap! OR return them to where you got em! These were suposed to be the best & safest SFB!!!!!??????????