Thanks!

It's been a REALLY long time, and I had to do some searching, but it looks like I used Samco 3mm silicone hose. I believe I got the first set from Mike at Mini Sport USA in red, as that's all he had left over from his project. I since replaced with black but can't find either "orders" in emails. 

 

Found an old thread over the pond on it.

https://www.theminiforum.co.uk/forums/topic/290669-spi-silicone-vacuum-pipe-conversion/page-2?hl=+silicone%20+hose

What size for the thick walled silicone lines?  Been a long time since I've changed the Rover ones, the local auto parts guy had a blank look when I asked for 1/8" thick walled silicone lines!

I would take the advice and replace all the lines with thick-walled silicone lines. This will eliminate the elbow altogether. Just be sure to add a bit extra to the length to ensure it doesnt kink.

 

I have owned my injection Minis since 2005 and after dealing with issues on both with the factory vac lines, I moved over to silicone and have never had to look at them again. The motor on my 94 has been out several times and there is no worry about those pesky elbows wearing out/cracking from taking them on and off. This is my #1 recommendation for all injection cars. Takes so much future guess work out.

There's a little yellow line in the air filter, and and black one from the injector to the fuel trap IIRC.

I changed mine about a year go, in the dark...

That is a good idea but I'm still wondering about the two short lines.

It's better to buy American made elbows and poly lines than the Rover crap. All from your local parts store. 

You might ordered the fuel trap lines.

I can't help thinking that I'm missing something here.  I recently imported two JDM 96 Coopers.   I ordered two sets of the four vacuum lines for each Cooper   I received for each Cooper two different black lines, a red and a yellow line.  I also ordered several feet of the correct size silicone tube.   The red line and one of the black sets were a perfect replacement.  The other black lines and the yellow lines were considerably shorter than the original lines and weren't even coming close to fitting.  Fortunately, I could use the ends and my silicone hose to get everything to work correctly.   But why were the lines so short, not even close to the correct length?

Thanks