Didn't enjoy converting a supercharged L322 last week.This week I'm converting an XJ8, more or less the same engine but without the supercharger, still needs a fuel return fitting, still needs a lube (but at least not electronic type)... But I wasn't counting on this car having air suspension stuff in the middle of the spare wheel well and it seems this air suspension stuff is going to be much more of a pain to shift than it is on an L322. Some pipes run through a rubber grommet in the wheel well floor to the suspension, pipes also run internal in the wheel well to the pump, so to shift it from the spare wheel well so I can fit the tank I'll have to extend the pipes.

Pic of the air suspension stuff in the wheel well

But how to extend the pipes... I don't want to have run new lengths of pipe to each suspension corner, pump, etc... I just want to buy more of the same types of pipe and use pipe joints. Can anyone help identify what type of pipe joints I need and where to get them in a hurry?

Here are some close up pics of the pipes marked 6x1 and 4x1 (which I take to mean 6mm diameter x 1mm wall thickness etc) and the end fittings which use little collets. Reckon I don't need to worry about the end fittings as I should be able to re-use them on the pipes I add as extensions, but I do need to buy some of this 6x1 and 4x1 pipe and fittings to connect 2 lengths of 6x1 together and 2 lengths of 4x1 together.

Anyone know where to get those bits in a hurry? I'm not sure what thread they are etc but I thought perhaps they're usually a standard type and some of the knowledgeable people here might know.

I didn't mean to post this in Opening Time, had a look to see if I could shift it but seems beyond my moderation powers... Higher mods feel free to shift this thread.

Thanks, Simon

Your local truck dealership will keep airline and connectors in stock.

They'll have to repair air leaks in the lines on trucks fairly regularly.

Not sure what the size is but I remember the connectors we keep at DAF are the same size as the brittle plastic coolant line in the P38 engine bay. I used a straight airline connector to repair when it snapped.

Hadn't thought to check truck dealerships... you reckon they'll keep narrow gauge pneumatic pipe joiners in stock?
Been looking on RS Component's website but their search facility doesn't seem great when looking for this type of thing.
Ideally I'd prefer something like a simple push-in inline pipe joiner, the type where you just push the pipe into a plastic grommet before pushing into the hole job done... The joiner(s) need to be physically small so that I can either make the join between the tank and wheel well floor or make the join externally (after pushing the pipes back through the grommet - there's a space forward of the wheel well protected from the elements by a plastic under-tray).

These https://uk.rs-online.com/web/p/pneumatic-straight-tube-to-tube-adaptors/0812106/ are what I've used on P38 air suspension, designed to take up to 20 bar so twice what the system runs at and I've not had one leak yet. 4mm version is https://uk.rs-online.com/web/p/pneumatic-straight-tube-to-tube-adaptors/0812099/ and tube is https://uk.rs-online.com/web/p/air-hose/8435025/ for 6mm and https://uk.rs-online.com/web/p/air-hose/0723927/ for 4mm. Unfortunately they only sell it in a 20m roll but I got some from a local hose specialist who would sell it by the metre.

Short reply for tonight... Thanks for that Gilbert, just the response I was hoping for.

This morning I bought both sizes of fittings and piping plus a cutting tool, total £71.60 with free next day delivery. Never needed a cutting tool for this kind of thing before but for £6 why not.

The pipe we use in some types of modern straw type injectors is 6x1 and I have a few metres of that in stock, could probably use that for the 6x1 but still bought 20m from RS and another 20m from TinleyTech. Eventually I'll use all the 6x1 bought from TT but may never use all the 6x1 from RS, info on their site doesn't say whether it is compatible with hc's like oil, petrol or LPG but I'd be kicking myself if I didn't buy it and found that for some reason the 6x1 from TT wouldn't work with the inline joiners or Jag end fittings.

Besides extending the piping and re-mounting the reservoir and valve block there'll be quite a few wires to extend to the valve block too.

Thanks for the help.

Parts arrived this morning. Going as well as I could have wished for really, looks like I'll manage to hide the entire air suspension gubbins that were previously in the centre of the spare wheel well still under the flap in the boot.

The owner opted for the square filler centre rear below bumper level, just made the bracket for that and waiting for the paint to dry before I can fit the tank.. but obviously I've already made sure it's all going to fit etc. Fitted the injectors and did some wiring yesterday, just about to route LPG and petrol return pipes while the paint is drying.