Bubble Flares and brake lines. Can somebody explain.

So I’m in the process of trying to optimize my brakes. I’d like to eliminate the LSPV because I don’t believe it’s working anymore.

I have bought a Willwood PV that has 2 ports for Bubble Flare line - 10Mx1.0 fittings.

I’d like to replace the small line that goes from the (soon to be new) PV to the rear brake line fitting above the rear differential and replace the main FEED line from the junction under the driver seat to the PV because they are very rusty near the rear.

I’m wondering if I should’ve bought a different Willwood PV that accepts the standard brake line (double flare M10x1.0) fittings and also if like to confirm what fitting ends Toyota uses?

I would like to have the required fittings and lines on hand before I start. I don’t have a flaring tool to make bubble flares, if that is what Toyota uses.

If anybody can share some information on this I’d appreciate it.

Ideally I won’t have to do any flaring and I can just buy straight lengths with pre flared ends on them and bend to fit.

 

Do yourself a favor and don't use the sticks of brake line the parts stores sell. Get a roll of copper nickel alloy brake line and an Amazon flaring tool. That line is super easy to flare and bend without kinking it. Also, it doesn't rust so you'll never have to replace it again. I keep a roll of it hanging on the wall in the shed in case I need it.

 

@JakeJake how'd you handle with your install?

 

I agree, that stuff is awesome to work with. So standard double flares are all this truck needs?

Do I need an adapter or will double flare seal into this Bubble Flare PV ports?

 

You'll need to adapt the bubble to a double flare, or if you are replacing a stretch of line and get a flaring tool you could flare one side as a bubble and the other as a double.

 

I use

$48 Capri Tools 3/16 in. Double Flaring Tool (CP21110-316)

this flaring tool Its tits, Highly recommend. OP1 Makes a bubble flare, OP2 turns that bubble flare into an invert flare like toyota uses. I just cut, straighten, rebend the oem lines to my needs.

Bubble flare fitting top, Invert flare fitting bottom. Amazon "The Stop Shop" P/N in photo.

 

What about a dubble bubble?!

sry I had to. Honestly though thanks that makes sense. My kit only does single and dbl flares so gonna need me some adapters

 

awesome thanks dude, that tool looks like the bees knees . After dropping a hundo on a Motive bleeder my desire to spend more money on brake tools is in the gutter but maybe it’ll all be worth it one day.

 

Put some on the threads every time, you’ll know if you have a leak.

 

Thanks again for all the help. Got the new lines and PV installed today and the brakes are significantly more responsive. No more spongy pedal. The Motive bleeder and Capri flaring tool made it a breeze.