Hi peeps iam after a bit of help. We brought kermit about 3 months ago and i must say what a super car he is . There was a few little issues but nothing i cant sort my self . like the front strut mount is knocking , needs new handbrake lever and bit of tlc on the body work. And also need new rear subframe mounts do i need to drop the frame to change these can any one help . Kermit is a 2000 105 jtd in the mushy pea green .Wife want me to respray him purple hmm not sure my self. Thanks peeps:slayer:
General Rear sub frame mounts
- Thread starter keznkarl
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General Rear sub frame mounts
Welcome to the (slightly mad) world of Multipla ownership 
Many threads on here concerning rear Subframe Mounts, usually known as 'Bushes', sometimes (wrongly) called 'Bearings'.
You don't need to remove the Subframe, just drop it down enough to replace them.
It's usually the front two that go, they need to be a good tight fit as they're subject to a fair bit of downwards loading, as well as the more understandable upwards loading.
Start with these...
Bushes 1
Bushes 2
Bushes 3
Bushes 4
Bushes 5
Many threads on here concerning rear Subframe Mounts, usually known as 'Bushes', sometimes (wrongly) called 'Bearings'.
You don't need to remove the Subframe, just drop it down enough to replace them.
It's usually the front two that go, they need to be a good tight fit as they're subject to a fair bit of downwards loading, as well as the more understandable upwards loading.
Start with these...
Bushes 1
Bushes 2
Bushes 3
Bushes 4
Bushes 5
Regarding the subframe mounts you mean?
All the info you need is in those threads/topics I linked too.
I used Vectra mounts on mine, but they need a few thou' machining off the outer diameter of them.
Others use shorter items off a Brava (I think), and there are others as well.
There are also kits on ebay now, supposedly a direct fit (no modding required) for the Multipla.
As I said, all in the threads posted.
All the info you need is in those threads/topics I linked too.
I used Vectra mounts on mine, but they need a few thou' machining off the outer diameter of them.
Others use shorter items off a Brava (I think), and there are others as well.
There are also kits on ebay now, supposedly a direct fit (no modding required) for the Multipla.
As I said, all in the threads posted.
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Just out of interest bikedoc, which vectra ones did you buy? I have access to a lathe at work...not that I've used one in 15 years!!
Post Nr.13 and onwards for the relevant bits...
Edit; Also, bear in mind some of my subsequent findings and comments.
One of my replaced Mounts started knocking a few thousand miles later, due to it coming loose from the subframe, and I realised when looking at the layout of the suspension that the front mounts will have a fair amount of downwards loading on them a lot of the time when driving (braking and hitting bumps/dips).
It hadn't occurred to me before the knocking started.
The important thing is to have the Mounts as tight a fit as you can to prevent them coming loose.
You may find you can press them in without doing anything to them, using the weight of the car.
If you put them in place (the lower portion goes into the subframe aperture loosely), then had a piece of metal tubing that slipped over the mount, and was long enough to jack up against the subframe, it might be enough to force the subframe over/onto the mount.
The other option would be to use a length of studding (same thread as the mounting bolt), a nut, and a thick plate with a hole for the studding to pass through (or the 'cup' washer itself, but it may not be strong enough).
You's still need the piece of tubing to push up against the subframe as you wind the nut on.
Edit; Also, bear in mind some of my subsequent findings and comments.
One of my replaced Mounts started knocking a few thousand miles later, due to it coming loose from the subframe, and I realised when looking at the layout of the suspension that the front mounts will have a fair amount of downwards loading on them a lot of the time when driving (braking and hitting bumps/dips).
It hadn't occurred to me before the knocking started.
The important thing is to have the Mounts as tight a fit as you can to prevent them coming loose.
You may find you can press them in without doing anything to them, using the weight of the car.
If you put them in place (the lower portion goes into the subframe aperture loosely), then had a piece of metal tubing that slipped over the mount, and was long enough to jack up against the subframe, it might be enough to force the subframe over/onto the mount.
The other option would be to use a length of studding (same thread as the mounting bolt), a nut, and a thick plate with a hole for the studding to pass through (or the 'cup' washer itself, but it may not be strong enough).
You's still need the piece of tubing to push up against the subframe as you wind the nut on.
Last edited:
Post #20 in this thread shows what I did.
https://www.fiatforum.com/multipla/306049-lets-get-party-started-2.html
It worked a treat. Unlike others here, I took the metal off the subframe rather than the bushes. That way, if they need replacing again, it's just a case of hitting the old ones out and pressing in (standard) new ones. I erred on the side of caution as I'd already figured out that the front bushes can be subjected to load in both directions. In theory, the rear ones could be too. It's worth remembering that the friction fit of the bushes to the subframe is the only thing that holds the subframe onto the car when it's off the ground, so the fit needs to be very tight. You can see that I bent the piece of angle iron winding mine into place. I used a fine file (and a lot of patience) to open out the subframe holes. Touch wood, they've been fine since.
A while ago I drew up a two-piece bush design that could be moulded in PU, which would hold the subframe completely captive to the Multipla chassis. This is the best solution and would be a doddle to replace. It would also mean that the laterally-loaded part of the bush could be moulded in a softer compound than the vertically-loaded bit, so handling could be tightened up a bit without ride quality suffering. I tried to get a maker of such things (on ebay) to produce them, but unfortunately it never came to anything.
https://www.fiatforum.com/multipla/306049-lets-get-party-started-2.html
It worked a treat. Unlike others here, I took the metal off the subframe rather than the bushes. That way, if they need replacing again, it's just a case of hitting the old ones out and pressing in (standard) new ones. I erred on the side of caution as I'd already figured out that the front bushes can be subjected to load in both directions. In theory, the rear ones could be too. It's worth remembering that the friction fit of the bushes to the subframe is the only thing that holds the subframe onto the car when it's off the ground, so the fit needs to be very tight. You can see that I bent the piece of angle iron winding mine into place. I used a fine file (and a lot of patience) to open out the subframe holes. Touch wood, they've been fine since.
A while ago I drew up a two-piece bush design that could be moulded in PU, which would hold the subframe completely captive to the Multipla chassis. This is the best solution and would be a doddle to replace. It would also mean that the laterally-loaded part of the bush could be moulded in a softer compound than the vertically-loaded bit, so handling could be tightened up a bit without ride quality suffering. I tried to get a maker of such things (on ebay) to produce them, but unfortunately it never came to anything
.
Ooops - should have said the laterally loaded part could be moulded in a harder compound.
I'll get me coat....
Correct, but the over-size washers at the bottom would prevent it coming right off, even if all the mounts came loose from the subframe.
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I never fitted those washers!!... But mine were so tight going in they ain't going anywhere!!
Marty.
Marty.
