Rear upper wishbone bushes - how easy to change?

[pincher]

Apparently, my nearside top bush is worn and have been advised to change it asap. Obviously I will get the offside done at the same time, so, as per the title, how easy are they to change on a scale of 1 to 10? I have access to a lift so getting to them shouldn't be a problem.

If they are a right bugger to do, I'd consider actually replacing the top wishbones themselves as a)I'm crap at stuff like this and b) I'm crap at stuff like this

If they are easy to swap, should I consider doing more at the same time?

[pbaker43]

Depends if you want to use the original bushes or go polybush from SH. I have just replaced all the rear bushes, ARB and drop links. I used polybushes, easier to fit and change in the future, plus the wish bones actually mover up and down now where as before they almost ridged.
Process - Removed the wishbones, used a brazing touch to set fire to the rubber inner, let it burn until the center can be pushed out, kill the flames leave to cool, (do this outside the garage) when cooled the rubber centre can be lifted out with a screw driver, then using a hacksaw feed through the bush lenght ways, cut the outer part of the bush two times then insert a steel tapered bar between the bush casing and the housing (in the middle of the cuts) and swing away until the bush bends inwards, realeasing the pressure then knock it out, it takes a bit of time but there is no damage from cutting torches and you do not need a press.…

If you go for original rubber bushes you can go for the removal method above but you or have them pressed out and new ones pressed in, hence a garage job, depends on you skills, if like you say your are crap, now is the time to learn, “in life, every day is a school day” if there is a local PHer ask them for some guidance.

[pincher]

I went for the more expensive, yet far simpler solution

[Bobsy]

I fitted all new front wishbones a couple of months ago with rubber bushes. As they were new wishbones I didnt have to press the old ones out. I would have used the method metioned in the previous post.
I was strugling to get the new ones in until a mate gave me a good tip. Use a steel bolt with appropriate diameter and thickness washers to wind the bush in. Some fairy liquid/copper ease helps. It was easy using that method.

[Grey Ghost]

pincher said:

I went for the more expensive, yet far simpler solution

Would that be the P.I.N. method

[pincher]

Grey Ghost said:

Would that be the P.I.N. method

That would be the 'Buy new wishbones with bushes already pressed in' method

I figured it would probably result in less gnashing of teeth in the long run

[pincher]

New wishbones are in

I made sure that the setup was as close as I could get it to the old ones, in terms of where they bolted on at the front but obviously it is unlikely that I got it 100 spot-on, so would it be a good idea to get the tracking done, or would changing the rear uppers not make any difference?

[Grey Ghost]

pincher said:

would it be a good idea to get the tracking done, or would changing the rear uppers not make any difference?

Given where we are going.....and at what pace perhaps a trip to Elite in Rainham would be money well spent?

[pincher]

130 kph

[pincher]

Grey Ghost said:

Given where we are going.....and at what pace perhaps a trip to Elite in Rainham would be money well spent?

Went to SuperTyres in Maldon this afternoon and got a very slightly customised setup, following a recommendation from another PH'er.

Great service and would thoroughly recommend them - car now feels much much better (although, oddly enough, it was the front that needed more tweaking, even though I had it geo'd at Power last year)

I'll scan the setttings later and post up. Just off to dick about with the plenum and some Hylomar Blue now

Edited by pincher on Monday 25th June 16:19

[pincher]

Here's the before - not surprised that the back was out but Lord knows what was going on with the front! A bit disappointing that it was done only 12 months ago....



And here's the after;

[SILICONEKID340HP]

How does it drive now ? which is the front of the car on the diagram.

Are they TVR factory settings ..and is that just for road use or fast road and the odd trackday..

[Grey Ghost]

pincher said:

That looks like a p155ed Bambi on ice

[pincher]

Feels much better now - it was (probably unsurprisingly) pretty skittish on roundabouts, especially if there were any bumps.

It's not too far from standard to be fair - has a bit more camber at the rear (I asked for 'around' 1.5 degrees of negative camber)' and should help with understeer.

I'd say it's probably a fast road set up , which is ideal for me.

I know of certain people who have more aggressive setups and hopefully one day, I'll be as butch as them and be able to go more 'pointy'

Edited by pincher on Monday 25th June 21:37

[del 203]

[pincher]

[Grey Ghost]

pincher said:

I'd say it's probably a fast road set up , which is ideal for me.

This is what my set up is described as and feels as planted today as it was when it was done........which probably means skittish on super smooth French tarmac

pincher said:

Butch and Pointy

Possibly not two words I'd like to see repeated in a sentence as I'm going to have to share a room with you......

[del 203]

Grey Ghost said:

pincher said:

I'd say it's probably a fast road set up , which is ideal for me.

This is what my set up is described as and feels as planted today as it was when it was done........which probably means skittish on super smooth French tarmac

pincher said:

Butch and Pointy

Possibly not two words I'd like to see repeated in a sentence as I'm going to have to share a room with you......

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