Please help my friend with his possible future vw purchase :)

[Mischa]

long time friend, looking into buying a caravelle as he says in this email. i dont know anything about lift kits and what not, im way more interested in sitting closer to the ground! so possibly some of you van nutters could help me/him out? this is a copy of the email. much appreciated.

Dear M.,

Here's a query for a VW expert and mechanical engineering student.

I'm tempted to buy a VW Caravelle with the more powerful diesel and 4WD. It would be good for camping expeditions.

But the ground clearance is poor (165mm) and made worse, in practice, by the wide track and long wheelbase.

The aim is to get up and down bush tracks in national parks, nothing too serious. Over the last few days we have been to Kaputar and the Warrumbungles and around Lightning Ridge. Some of the tracks had sunk wheel tracks and a highish middle of the road.

Trakka who make impossibly expensive conversions offer some modifications by the German outfit Auto Seikel. Their most elaborate offering improves the ground clearance with suspension modifications, adds bigger wheels, and changes the gears to provide lower lower gears. The full deal is a bit over the top.

However the simplest modification simply seems to provide longer coils and shock absorbers to gain 30mm. I guess the kit could be bought by mail order.

You can see the offerings on the Auto Seikel website and hitting Configurator and then "T5".

Cars with independent suspension have constant velocity joints at the inboard and outboard end of the drive shafts. And CV joints with necessarily greater ability for large angles for the steering wheels.

Now I'm wondering whether standard CV joints could handle the more extreme angles if you put in longer springs. Or is the downside that they might fail rather quickly and/or cause vibration.

And, of course, the suspension arms would have different angles and there might be problems with this.

Any ideas about these issues or about who we could ask?

The more obvious and simpler downside is multi-story carparks. Solution, a hacksaw and the first Caravelle convertible.

Thanks for any thoughts you may have.

Graeme

PS don't be distracted by their lift kits for Golfs!

cut a long story short, he wants to buy a caravelle and raise it a bit to get down dirt tracks (nothing serious) i cant see any problems in this??

i would guess he just needs new shocks springs and tyres. are there coilovers you can get that are for offroad?

[Golf Loon]

I had the TDI wound up high on the front and snapped 3 CV joints, wound it down to reduce the angle and is sweet now. T4 2.5TDI It would be worth considering stronger ones if they are available.

Also would a SWB be more agile than the LWB? worth considering as a lot of the conversions are LWB.

[gregozedobe]

If he is trying to go where "proper" 4WDs have been wearing deep tyre ruts it is a bit much to ask of a T5 (even a modded SWB version). It is possible to make a T5 a little bit better, but the best "mod" he could do would be a proper 4WD training course so he knows what is (and isn't) practical in a T5.

IIRC Trakka are the Oz agents for seikel, and they don't like to supply components for installation to an existing van, they only modify complete campers that they convert and sell.

He should also look at some underbody "armour" to protect his sump, gearbox, fuel tank and other vulnerable bits.

[Seano]

Mischa

I can help. My 2001 T4 has been lifted (in early 04) to get a bit shy of 180mm under the diff. It is easy enough to do.

Used to live in far north west NSW and have travelled widely - punted the Syncro along the Great Central Road in WA, through El Questro Station (inc. interesting water crossing) and plenty of others besides.

All Graeme needs is a pair of KVRR15 rear springs from King Springs....these are exey for what they are - around $400 but you can order them from any auto shop.

He should replace all the shocks as well. I'm using Koni's but the Bilsteins are fine too. Revalving hasn't proved to be a required item.

The other thing he'll need in a Syncro T4 is some rear diff spacers to lower the rear diff slightly to ensure optimum driveline and CV angles after the lift. Mine are custom fabricated based on the spacers in the Seikel kit - cost ~$75.

Front CV angles don't change that radically as a result of the lift....

First job is to replace all the shocks.

Then, with the van sitting level on a concrete floor, ensure the van is sitting 1 degree down at the front then adjust the front torsion bars accordingly until you get this sorted - this is critical for a long CV life!! Then measure the vehicle height (wheel centre to arch) at each corner and the length of the torsion bar bolts (end to nut).

Remove the rear springs and replace with the Kings. Whilst the OE spring just fell out, I had the devils own getting the new taller springs in. In the end, I had to remove the trailing arm!! It'd be easier if (and require less post fitting adjustment) you could disconnect the CV at the rear diff but I didn't have the right tool at the time.

Go for a short spin to settle the springs in and return to your level concrete floor.

Measure the height increase on the rear.....now you've got an idea about how much to raise the front. However, the measure isn't that critical since you need to adjust the front torsion bars to return the T4 to 1 degree downangle. Which means winding them up....

Now fit your diff spacers. Mine are made from aluminium. There's thinner one at the front and two thicker ones at the rear. They go between the chassis and the rubber mounts. You'll need to replace the mounting bolts as the stock ones aren't long enough (they are M10 hi tensile). Support the diff on a jack, undo the bolts, lower the diff down, slide in the spacers, fit the new bolts, lift the diff, tighten the bolts.

Now that the van is sitting up higher and every thing is in place.......drive straight to your nearest wheel alignment centre and get a full re-alignment as your toe-in will be out by miles!! It is likely that the toe-in adjustment will be almost or to the limit of what's possible.

Job's done...all that's need now is some AT tyres......on 16" wheels this is no drama but a little harder for 15" wheels due to lack of choice.

[Graeme]

The advice is appreciated, especially Seano's detailed masterpiece on the economical and successful way to achieve ground clearance with a T4.

If I'm right the T5 does not have torsion bars at the front so hopefully we'll hear from someone who has successfully experimented with one of these and has found front springs and shockers to suit. If only Seano would buy a T5 and set himself up in business he'd have queue.

An update regarding Trakka which corrects one of the posts...

They confirmed that they will put Auto Seikel kits on cars brought to them by owners if they are new or near new. But they need between $3,000 and $4,000 for the simple 30mm Auto Seikel upgrade.

I assume Trakka would supply a useful engineer's certificate as they do with other modifications.

(A DIY approach is only sensible if the Comprehensive or TPPD insurer notes and agrees the modifications.)

Anyway its all academic - the latest experts predict a US$200 a barrel oil price. I'm off to buy a bicycle.

[WEDEL.1]

I got an extra 0.70 inch by using 215/70X15 tyres instead of 205/65X15.

Maris

[Seano]

Graeme
The T5 has struts all around. So it's fairly straightforward remove and replace job but you have major problems with alignments if you go too far.

All the bits that Trakka are using come in tiny volumes from Germany which explains the expense. However, it is likely possible to get the same parts fitted in the factory by special order as Seikel make the official off road pack for VW....but I'd be rather surprised if it was any cheaper.

There are raised rear springs for the T5 from King Springs. The code is KVRR18.....

Given the cost of servicing (let alone fuelling) a TDI T5........a treadly is a good option.

[MultiplexMan]

An update regarding Trakka which corrects one of the posts...

They confirmed that they will put Auto Seikel kits on cars brought to them by owners if they are new or near new. But they need between $3,000 and $4,000 for the simple 30mm Auto Seikel upgrade.

I just checked the Seikel web site - AUD3-4K (EUR1559) would get you only shocks & springs!!! I would seriously consider custom made adjustable spring perch dampers for this money from someone like Drummond Motor Sport...

I also note Seikel get more "lift" by wheel/tyre selection...as per Maris 8-)

http://www.seikel.de/de/index.php?id...aram=20&lang=2

[MultiplexMan]

If he is trying to go where "proper" 4WDs have been wearing deep tyre ruts it is a bit much to ask of a T5 (even a modded SWB version). It is possible to make a T5 a little bit better, but the best "mod" he could do would be a proper 4WD training course so he knows what is (and isn't) practical in a T5.

I second this. I use Landcruisers & Hiluxes for work in the Cooper Basin, Pilbara and Kimberley regions. Most driving is unsealed off road and we must (company regulation) have 4WD engaged all the time. I have taken my 2WD T5 SWB in the same areas without issue.

It's all about knowing the vehicle (and driver) limits.

I have never taken the company 4WD anywhere near the limits we did during the 4WD courses.

It is amazing what you can do in a 2WD if you take your time to select the line and approach properly.

[Seano]

I just checked the Seikel web site - AUD3-4K (EUR1559) would get you only shocks & springs!!! I would seriously consider custom made adjustable spring perch dampers for this money from someone like Drummond Motor Sport...

I also note Seikel get more "lift" by wheel/tyre selection...as per Maris 8-)

Which is precisely why I never went the Seikel route myself. I hunted up the King Springs, had a yarn to a very helpful person there, had a good look at the T4 workshop manual via ErWin and went 'yep' that'll work. More recently, I worked with a bloke in the UK who had bought a Seikel kit and was happy to impart the details of the diff spacers.....so the jobs all done.

Agree that the tyres are the easiest way to get height and should always be the first resort......but the tyre choice till recently has very limited for the 15'' wheel T4 (with the 16" T5 you have some very knarly off road options!). Coupled with that is the restrictive tyre size rules for registration in some States and the insurance complications that can come with it.

However, once these boots are worn out then I too will likely follow Maris' lead...