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Author Topic: Where to start for improving handling?  (Read 2852 times)

Offline smilespergallon

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Re: Where to start for improving handling?
« Reply #15 on: March 02, 2023, 09:45:46 am »
I've finished the front and rear drop links, so I'm going to have a go at refreshing the suspension. I'm going to go for the Bilstein B4s.

This is what's in my basket at the moment:

* 2 x Bilstein B4 Front Shock Absorber [22-140012]
* 2 x Bilstein B3 Front Coil Spring [37-148126]
* 2 x Bilstein B1 Front Strut Mount [12-244942]
* 2 x Meyle Front Bump Stops [100 642 0004]

* 2 x Bilstein B4 Rear Shock Absorber [19-140025]
* 2 x Bilstein B3 Rear Coil Spring [36-148134]
* 2 x Bilstein B1 Rear Strut Mount [12-224081]
* 2 x Meyle Rear Bump Stops [100 742 0018]

I know it's a lot to ask, but do these parts look correct? Mainly the top mounts and bump stops.

Also, should I be looking to buy new bolts while I'm at it? If so, I'm not sure where to look or how I'd find out what bolts I would need.

Thanks as always for any advice.
« Last Edit: March 02, 2023, 10:12:19 am by smilespergallon »

Offline smilespergallon

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Re: Where to start for improving handling?
« Reply #16 on: March 02, 2023, 10:21:02 pm »
All seems to be good from my research.

Think I'll just leave the bolts for now and consult eBay if something snaps. Looks like "VAG Bolts" on eBay do a nice selection.

Offline smilespergallon

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Re: Where to start for improving handling?
« Reply #17 on: March 02, 2023, 10:26:01 pm »
If I happened to get the B6 instead of B4 would I still need the bump stops?

I vaguely remember reading somewhere that the B6 shocks come with built in bump stops.

Offline smilespergallon

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Re: Where to start for improving handling?
« Reply #18 on: March 14, 2023, 11:29:27 pm »
I'm in the middle of replacing the front suspension. Currently stuck at getting the shock absorber out.



1. Do I need to remove the tie rod to be able to remove the shock absorber? Some tutorials remove it, whilst other's don't. Not sure if it's necessary and that's what's holding me back.

2. Are there any tricks to getting the shock absorber out? I've hammered a chisel punch in to the back to try and open it up, and I've been hitting down on the housing to try and get it out, but I've only managed to get it about half way out so far. Doesn't seem to want to go any further.

Definitely the hardest job I've done on the car so far, but I think I can do it.

Any advice would be appreciated. Going to give it another go tomorrow.
« Last Edit: March 15, 2023, 10:37:19 pm by smilespergallon »

Offline HughOR

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Re: Where to start for improving handling?
« Reply #19 on: March 15, 2023, 08:54:54 am »
Take the caliper off and tie it out the way. Take ball joint off the wishbone and undo track rod and drop link. Then take the disc, hub and shock out and do it on a bench.

Offline smilespergallon

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Re: Where to start for improving handling?
« Reply #20 on: March 15, 2023, 12:19:30 pm »
Take the caliper off and tie it out the way. Take ball joint off the wishbone and undo track rod and drop link. Then take the disc, hub and shock out and do it on a bench.

Thanks, didn't think to take the whole thing off.

Offline terrier

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Re: Where to start for improving handling?
« Reply #21 on: March 15, 2023, 06:06:16 pm »
  NOT a safe option unless your careful VERY careful  :happy2:


Offline steve4934

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Offline smilespergallon

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Re: Where to start for improving handling?
« Reply #24 on: March 24, 2023, 02:55:59 pm »
I managed to replace the front suspension on both sides.

Here are some notes/tips from my recent experience:

1. You can do this job on your own if you want to.

2. It's more involved than the rear suspension. It took my one day to do both rear springs and shocks, but it took me two days for the front springs and shocks (a day for each side). However, I am an utter beginner working on the floor with an amateur's selection of tools.

3. If you're replacing both the springs and the shocks, might be a good idea to go ahead and get new top mounts, bump stops, and strut protectors/sleeves too. If you get these 3 extra things it saves on having to dismantle the old struts to get the parts off that you need. This may be a big time-saver, as I've heard the top nut on each strut can be difficult to get off sometimes. Wasn't too bad for me, but I did have to go out and get a 21mm/22mm swan neck ring spanner to do the job.

4. Might be worth getting new drop links and track rod ends ready for this job too. If they're original they could be rusty as hell and/or rounded out and may well need cutting off. I had to cut off one of my track rod ends, but got lucky with the other one (and both the drop links were okay too).

5. I disconnected everything from the steering knuckle so I could take the whole thing out with the strut attached (thanks @HughOR). Made the job a lot easier. This means that if the strut doesn't hammer out while still in place, you can take it to a bench and do it there. Most online videos leave the caliper and tie rod attached to the steering knuckle too, but I found it was much easier to just take them off (I also took the brake disc off as well for good measure). Plus, I really wouldn't want to have the whole steering knuckle + caliper drop down while attached to the tie rod only, as it's heavy as sh*t.

6. Getting the old shock out and the new one back in are the hardest parts of the job. To get it out, I used a chisel punch to open up the back of the steering knuckle as much as possible. Then I sprayed with WD-40, and whacked with a 4lb lump hammer (better than a 2.5lb). If it doesn't come out, take the whole thing off, and then you can hit the strut out from underneath whilst on a bench. To get it back in, spray grease made a world of difference, and using the trolley jack to help push the steering knuckle up in to the strut helped a lot too, then whack with a 4lb lump hammer from underneath. It takes some effort, but with the right amount of lube, wrangling, despair, and force, it will go back in eventually.

7. Refitting the top mount bolts was about as awkward as expected. But if you're dextrous enough, you can hold the strut with one hand, a bolt in the other hand, and look inside the wheel well to see if you're getting the bolt in to the threads. Still not much fun though, and required some jiggery and/or pokery to get them in. Using the trolley jack to kind-of hold the strut up was helpful.

The only casualty was the plastic windscreen trim that I snapped when getting to one of the top mount bolts on the one side. I don't see how I could have avoided it though.

Oh, and when I had the steering knuckle in the vice, I hammered the strut out on to my foot.

Thanks again everyone for the advice. It's like a different car now and I don't have to nurse it around corners like I used to.
« Last Edit: March 24, 2023, 02:57:55 pm by smilespergallon »

Offline pudding

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Re: Where to start for improving handling?
« Reply #25 on: March 30, 2023, 04:25:26 pm »
Good stuff  :happy2:

Yeah all of the bolts on the chassis are the stretch type apart from the caliper carrier bolts.  Whether you replace them or not is up to you. Most people reuse them.

Fitting & removing lowered suspension is a lot easier than standard struts!!  The rear is a piece of p1ss.  Wish the fronts were that easy  :grin:


2007 ED30 | 2009 TDI 140 | 2016 BMW 330D