*HOW TO* Convert a nova expansion bottle to twin outlet

[AlanH]

Just on finishing my xe conversion and seen a lads gsi with an xe in, his expansion tank had another outlet tapped into it which i thought looked much tidier that a t-piece so thought i'd have a go, heres how i did it:
Firstly i had to find a piece of pipe the right diameter so that the hose would fit over (12mm OD) i used the dipstick housing from some horrible hyundai which i still have a length of if anyone struggles to find some. I drilled a hole in the top of the tank at the side (see pic for location, not that important as long as its above the water level) i then used a 12mm drill bit and reamed the hole out with the drill bit by hand. I did this as i find using a drill tends to ream the hole out a bit too large and ideally you need an interference fit for this to work well. I then cleaned the end of the pipe with emery paper, coated it in glue and tapped it in. once the glue had set i smeared some silicone round where it seals, job done! just need to cut the pipe down a bit.
If anyone is interested in buying one of these or wants their own done pm me.



ps: maybe this could be made a sticky?

[Adam]

Have you tried it yet? Does it hold pressure???

[brainsnova]

not bad but your best to pressure test it to see if the glue etc will hold with the heat and pressure.

[Ernie]

much easyer just to fit a T piece in the hose imho.

[AlanH]

Yep holds pressure fine, tried to pull the pipe out quite hard and it never budged either, was a really tight fit in the hole

[cunit]

just don't bother with that other hose

[Rich]

its there for a reason

[mayhem]

i didnt use it, it something with the inlet iirc?

[dan16v]

Not knocking it, but id be very wary of that after the header tank has expanded and contracted a few times, as the glue and plastic will not expand/contract at the same rate!

[Ernie]

ive seen how much pressure i can cause to a Bailey header tank on a track session so think i could kill that in about a lap or two.