3 replies to this topic

[sc-em]

Morning all. I am just about to refit my front subframe and was pondering mounts. At the moment, I have a set of rubber ones, but.... I currently have a 998 in, or will have, but have an MG Metro to rebuild and instal at some point. I am looking at it being more of a fast road car, with possibly attending local club sprint meetings at Curborough. Not as the wild 1380s that are there, more just to have a go and learn the track. So my question. Stay with rubber mounts, go solid, or compromise with poly. I have heard the ride with solid is harsh, but my 72 mini back in the day must have been solid mounted and I can't recall that being an issue. Have we all got softer with modern cars? Anway, I would welcome the thoughts and experiences of the forum. Thank you.

[stuart bowes]

It's probably mostly a case of dealers choice really, the only actual advice I kept coming across was don't mix them, it's either all solid or all rubber, not rubber up top and solid down below for example.  although I don't get the impression you were going to do that

 

if you do go solid the general concensus is to plate up the inside of the shell at the lower bracket mounts (the bit where it fixes down by your feet)  so it doesn't bend and/or crack the bulkhead over time

 

the original solid mounted ones had fixings down under the floor as well which mitigated that problem

 

I didn't plate mine up inside, instead I did a sort of half-measure and modified the lower brackets to connect underneath as well: https://www.theminif...-998/?p=3805479

 

I'm not saying that's the 'right' way to do it though, it is probably better to plate up the insides properly, certainly if you're planning on driving it really hard, or racing it, or whatever

Edited by stuart bowes, Today, 10:30 AM.

[sc-em]

Copy back from your project thread.

 

That's a brilliant job, Stuart. Thanks for taking the time to add the detail and photos. You have really engineered a great bracket to improve on the original. It is just the sort of thing my mate would do, but is probably more belt and braces than I need to do at the moment.

 

The main reason being the floors on mine are nowhere near as decent as yours, so that bottom folded brace would be largley ineffective. The problem with mine is largely due to the fact that the previous idiot owner tried to fit a pre 76 subframe, so just literally drilled the holes in the floor, which were quite close, but also whopping holes in the bulkhead to fit the two mounting bolts on each side. The first stage has been to fill those holes with washers and a skim of filler to make good. Then to tackle the floor, albeit it in a temporary manner. We are hoping to move house, so the car needs to be drivable.

 

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[Cooperman]

The Mini was designed to have solid front subframe mounts. They were changed to flexible when the target market moved from younger buyers to more elderly ones who valued a less harsh feel over crisp steering and handling.
The choice is yours really, but personally I always convert cars I have owned and/or restored to full solid mounts. However, I never fit the poly-bush type.