Now this is your stereotypical case of 'the devil makes work for ideal hands'........ and it appears to have gone sideways.
After a while of thinking to do it, I've finally fitted an aftermarket dogbone mount bush; a Powerflex Front Lower Engine Mount Hybrid Bush (Large) PFF85-833BLK to be precise. I chose the black series just to get the 'best' I suppose, but I don't know if that's the root of the problem with it being more track orientated. Unless I've fitted it incorrectly and or bought the wrong one, it's vibrating like a right beepity beep.
When you have the car idling, there's a little bit of an additional hum, but I was expecting that. The main issue appears when you go to move away and when the revs are between 1 and 1.5k, there is an almighty vibration which goes through the whole car. I drove the car up my close and the vibrations go away completely when you're over 1.75k. I've had the car back on the ramps to make sure I've not done a schoolboy error and forgotten to tighten it all up, but everything is as tight as it's recommended (I don't want to tighten it any more in case I break something)
Now I had to go to work this morning (slightly knobbled car or not) and I was able to check it going through the gears properly, even up the motorway. Once your moving, it's fine. As is accelerating (which actually feels better). But go into the above rev range and it's god awful.
I understand the rubber mounts are deliberately designed to get rid of any harshness, but deary me, if this is what a poly bush feels like, I've well and truly made a mistake fitting this. I'm at a bit of a loss because I had to 'chop' the old one out.
Help. Advise. Please 😢