Jump to content
SAU Community

Recommended Posts

While my Bora is in a million parts I've started looking for other stuff to fix.

I then leaned on a small piece of vacuum line and heard a crack and lots of airflow/sucking!

The brake booster vacuum line is brittle as hell and needs replacing. The two replacement hoses from VW are $300 so I thought I'd see if I can make my own up (car's not worth a lot, its not worth me getting OEM ones).

One end is apparently 13mm ID which could be a problem as I've only seen silicon line up to 6mm ID. This is the part that goes to a one way valve.

Can I use fuel line? Can I get some silicon line? Can I just fix the existing vacuum line somehow (cracks seem to be only around the ends of the line and not mid-way.) Looks like she's been in a bad way for quite some time and that I just made it worse.

Could I cause any probs by using non-exact hoses (ie larger or smaller ID)?

Is it easy to increase/reduse size of silicon lines?

Sanks.

Link to comment
https://www.sau.com.au/forums/topic/463951-diy-vacuum-lines-fuel-line-maybe/
Share on other sites

I've used fuel line before as a bit of a "get me home" fix and may or may not have left it on my car for months on end :woot:

In my mind it's the most durable of the hoses on a car, shouldn't be any issue - $300 for a rubber hose is a joke hahah

Fair enough. on my R32 when i put the RB25 in i used a bit of silicon rad hose from the plenum to the brake booster to get the car running and didn't have any issues.

In saying that, I can see how fuel hose could possibly collapse under vaccum but you'd really need to give it a go

any hydraulic place has rubber hose with fibre reinforced line, guaranteed not to collapse. Take your hose to them and ask, if they are any good they will have a solution for under $50 and it would be permanent.

  • Like 1

Yeah nice idea. Theres a few Hydraulic places in Mona Vale and Brookvale I can check.

Considering the cracks are only around the barb fittings, is there a tape I can use in the meantime? The lines have heat protection on all the fittings as it goes behind the engine block.

Yep amalgamating tape..........get it at Jaycar and the like. As you stretch it it sets off a chemical reaction and binds together. Stretch it heaps, if you break it then back off a little bit lol.

It is not supposed to like degreaser, but I've used it and it seems ok, maybe if its sitting in it??

  • Like 1

And one last thing, when finishing off wrapping, just stretch the tape till it breaks. Keep your thumb on the work area and it should break under it and bond in to the work area, so no loose flapping tape like you get with insulation tape.

  • Like 1

And one last thing, when finishing off wrapping, just stretch the tape till it breaks. Keep your thumb on the work area and it should break under it and bond in to the work area, so no loose flapping tape like you get with insulation tape.

Awesome, will do, thanks!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
    • Does it also misfire equally when revving?   Josh is very correct in what you should do. The coilpack harness wiring loom itself is a known problem due to its age and the number of heat cycles it has gone through. Throwing parts at a vehicle to diagnose the issue isn't a smart or good way to do it. Secondly, you may have a bad coil pack, you pop replacements in, they fix that issue, but messing with the harness breaks it, so the issue persists. So now you think "well it wasn't the coil packs" and have to continue chasing your tail, potentially swapping back in your shit coil packs and returning the good ones (yes, I've seen people do this because 'it wasn't the problem' and they want to save money). And suddenly, you've got two issues with the same symptoms...   Diagnose, don't use the spare parts shotgun.
    • Well the articals keep saying a Q50s (Skyline in Japan) with a new Manual gearbox. I like the talk about the new looks with the round tail lights. I hope they bring back the retro look like they did with the Z
    • Off the back of feedback we have decided to mix up this next Motorkhana at Avalon to have some targeted skills practice for beginners to advanced. Saturday 6th September 2025 8:30am Capped 26 entries Standard Entry Fee: $89 Members Entry Fee: $55 (SAU Victoria Only) Entries Close: Friday 5th February  Where: 55 beach road Avalon. https://maps.app.goo.gl/HNUE3EuNue3sJxh38 Entries: Limited to 26 entrants (Passengers allowed over the age of 14 with a signed disclaimer and same safety gear) Disclaimer: Download  Please electronically sign and email to [email protected] or print and hand in and Driver Sign In. To compete in this event you will require A valid  AASA General Speed licence or (Day license via the AASA Website for $50) MA Licenses are no longer accepted by AASA https://aasa.com.au/  A helmet, long sleeve clothing and a 1KG mounted fire extinguisher recommended (But not Mandatory). Further details within Supp Regs on the enty link. Entry Link > https://www.sauvic.com.au/entry/deca/20250906 You can bring and have a passenger in the car but they need to comply to the same safety and clothing as driver. Bring your car and get to battle others, win, lose or draw. I can guarantee you will have lots of fun. Any questions email [email protected] Entry List: 1.Anna S 2. Luke S 3. Jesse Givens-Lamb 4. Luca Stamatescu 5. Madeleine Stamatescu    
    • Wanna rewrite all of that in, say, 2 or 3 separate sentences, so that we can read it?
×
×
  • Create New...