Steering, Suspension, & Brakes

tips, technology, tools and techniques related to non-driveline mechanical components

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Bryan Renaud

(5 posts)

01/05/2015 05:16PM

Main British Car:

GM 7.5 rear disc brakes
Posted by: crewchief63
Date: June 21, 2017 08:37PM

Recently received my narrowed 7.5 for my B Roadster it currently has rear factory disc brakes of the 98-05 Chevy extreme pickup, My question is what will it take to take my MGB brake lines connected to GM brakes ? Being MGB uses different flared lines fittings and Chevy GM uses another type flared lines is there some type of adapter fitting to connect the two different lines British to American ?

Graham Creswick
Chatham, Ontario, Canada
(1144 posts)

10/25/2007 11:17AM

Main British Car:
1976 MGB Ford 302

authors avatar
Re: GM 7.5 rear disc brakes
Posted by: ex-tyke
Date: June 22, 2017 09:11AM

You've shortened an axle so it's probably easier to fabricate and route 2 new brake lines on the axle using fittings from the original components and then terminating at the original 3-way connector.

kelly stevenson
Southern Middle Tennessee
(966 posts)

10/25/2007 09:37AM

Main British Car:
2003 Jaguar XK8 Coupe 4.2L DOHC/ VVT / 6sp. AT

authors avatar
Re: GM 7.5 rear disc brakes
Posted by: kstevusa
Date: June 22, 2017 09:58AM

The MG (European) flare is called a Bubble Flare, whereas the US flare is a Double Flare. They are similar, but I just purchased a Bubble Flare kit and did my lines for the transition. Used the US fittings on the Original lines for the MG. Either way is good. Bubble flares are simple as are the Double ones. Lines are 3/16" or equivalent MM also. Car body transition to the dif. housing was probably most challenging task.

classic conversions
bill guzman

(294 posts)

01/09/2008 01:58AM

Main British Car:

Re: GM 7.5 rear disc brakes
Posted by: classic conversions
Date: June 30, 2017 10:38PM

Bubble flairs are 37 degree, so AN fittings will work

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