Bubble Flare

FireSale · 07-12-2022, 12:11 PM

A bit late but a bubble flare is a European standard and not common on US cars. Not sure its road legal in this country. Inverted double flare is stronger. Always match flares and fittings. Here's a chart.

https://www.mpbrakes.com/images/MPB-F200-22.pdf

SSDiv6 · 07-12-2022, 07:06 PM

A word of caution.
If you are using a bubble flare, make sure the mating components are designed for a bubble flare. The flare has a different shape and will not fit into double flare connections. You cannot connect a bubble flare to a double flare seat.

They have a built in crush surface which means that the flare can not be reused. You also can not connect a bubble flare to a double flare seat.

Todd Boyer · 08-07-2022, 11:19 PM

They've been around for a while on European cars at least. I'm working on an '81 Porsche 911, its brake system has all bubble flares.

curtis reed · 08-08-2022, 09:44 AM

Something I would like to warn everyone about both styles. Once you get the perfect flare on either you probably forgot to put the nut on the line. LOL

1matcoman · 08-08-2022, 01:22 PM

Quote:

Originally Posted by curtis reed

Something I would like to warn everyone about both styles. Once you get the perfect flare on either you probably forgot to put the nut on the line. LOL

Sure glad I've never done that. :-)

Eman · 08-09-2022, 02:11 PM

Quote:

Originally Posted by FireSale

A bit late but a bubble flare is a European standard and not common on US cars. Not sure its road legal in this country. Inverted double flare is stronger. Always match flares and fittings. Here's a chart.

https://www.mpbrakes.com/images/MPB-F200-22.pdf

I know GM started using bubble flares in the 80's

07-12-2022, 12:11 PM	#1
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 237 Times in 126 Posts	Re: Bubble Flare A bit late but a bubble flare is a European standard and not common on US cars. Not sure its road legal in this country. Inverted double flare is stronger. Always match flares and fittings. Here's a chart. https://www.mpbrakes.com/images/MPB-F200-22.pdf __________________ Dale Shearon 68 Mustang 6394

07-12-2022, 07:06 PM	#2
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,044 Likes: 712 Liked 1,583 Times in 582 Posts	Re: Bubble Flare A word of caution. If you are using a bubble flare, make sure the mating components are designed for a bubble flare. The flare has a different shape and will not fit into double flare connections. You cannot connect a bubble flare to a double flare seat. They have a built in crush surface which means that the flare can not be reused. You also can not connect a bubble flare to a double flare seat.

08-07-2022, 11:19 PM	#3
Todd Boyer Senior Member Join Date: Feb 2004 Location: Saint John NB Canada Posts: 561 Likes: 30 Liked 6 Times in 5 Posts	Re: Bubble Flare They've been around for a while on European cars at least. I'm working on an '81 Porsche 911, its brake system has all bubble flares.

08-08-2022, 09:44 AM	#4
curtis reed Member Join Date: Jul 2011 Location: Kiefer, Ok. Posts: 167 Likes: 64 Liked 125 Times in 59 Posts	Re: Bubble Flare Something I would like to warn everyone about both styles. Once you get the perfect flare on either you probably forgot to put the nut on the line. LOL