Brake Flare Fitting

[mtx450]

What size fittings do our brake hardlines use? I'm assuming they are the same S13/S14. I need to get replacement fittings from Summit and don't know which ones we use. Please refer to the below link....

http://store.summitracing.com/egnsea...82&D=%2D125082

[pwhitersxs]

The fittings that go into the brake master cylinder are m10x1.0. So I would assume the rest of them are that size. The easiest way to get the fittings is to go to a fittings and hose supply store and present them with your stock fitting and say "give me some of these". OR go to the junkyard and take a bunch out of other nissans.

I know that most nissan's and maybe all use a m10x1.0 for the MC.

That looks like the right one's. I would call if you order those to make sure you get the right ones.
http://store.summitracing.com/partde...5&autoview=sku

Just make sure you get the fitting that is m10x1.0. The fitting is what tightens down the flare to create the seal. If you are redoing your lines, make sure you do a proper bubble flare.

[mtx450]

Originally Posted by pwhitersxs

The fittings that go into the brake master cylinder are m10x1.0. So I would assume the rest of them are that size. The easiest way to get the fittings is to go to a fittings and hose supply store and present them with your stock fitting and say "give me some of these". OR go to the junkyard and take a bunch out of other nissans.

I know that most nissan's and maybe all use a m10x1.0 for the MC.

That looks like the right one's. I would call if you order those to make sure you get the right ones.
http://store.summitracing.com/partde...5&autoview=sku

Just make sure you get the fitting that is m10x1.0. The fitting is what tightens down the flare to create the seal. If you are redoing your lines, make sure you do a proper bubble flare.

Yeah, I've been doing research on it all night. I know the flares are a 10mm head. What is the difference between a bubble flare and a compression fitting. I know compression fittings are a no no for brake lines.

[pwhitersxs]

The bubble flare looks like a donut on the end of the brake line. For the MC, the bubble flare on the line seals against a flare inside the MC. So when you tighten down the line, the two seal against each other.

Flare fittings:
http://en.wikipedia.org/wiki/Flare_fitting

Compression fittings:
http://en.wikipedia.org/wiki/Compression_fitting

[mtx450]

Originally Posted by pwhitersxs

The bubble flare looks like a donut on the end of the brake line. For the MC, the bubble flare on the line seals against a flare inside the MC. So when you tighten down the line, the two seal against each other.

Flare fittings:
http://en.wikipedia.org/wiki/Flare_fitting

Compression fittings:
http://en.wikipedia.org/wiki/Compression_fitting

Heh, awesome. Thank you!

[GSXRJJordan]

Yup Yup, compression fittings are for A/C systems (and other systems that are under pressure all the time) - basically they have a little cone that seals against the inside of the nut when they're under pressure. Since brake systems have pressure both ways (when you let off the pedal, the caliper pushes fluid back on the M/C), it'll leak.

Those Summit fittings are the right ones

Also, Autozone sells pre-built (two fittings on a line) ready-to-bend brake lines in 12", 18", 24" sizes etc. Sometimes it's easier to buy these and rent their bender.

[n20240sx]

summit does not have them in metric

[PoorMans180SX]

If any of my hardlines go out, I'm just going to replace them with stainless braided.

It's about 2092834027203823 times easier.

[GSXRJJordan]

Originally Posted by PoorMans180SX

If any of my hardlines go out, I'm just going to replace them with stainless braided.

It's about 2092834027203823 times easier.

Braided lines will flex a little if they're that long, you want hardline for as long as you can go.

For doing hydro ebrake lines or re-doing brake lines, I keep M10x1.0 IF (inverted flare) to -3an male fittings in stock and just use -3an steel hardline. Relatively cheap, easy to bend, looks great (can be painted also), and is guaranteed to work well.

I really can't understate how easy the Autozone stuff is though, just buy a pre-flared, ready-to-go length and bend to suit. Works great for little stuff (up to 60").