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[VintageLambo] Re: Urraco brake problem resolved ......vintage lambo owners read this !!

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Glad to hear you solved this. The probable root cause of the swelling in the line is water accumulation and combined with degrading of the butyl material inside the line. It is important to prevent this by using a good quality fluid. I have been using ATE "super blue" racing fluid in all vintage cars due to it"s very low hydroscopic action, and high boil point. It"s pricy, but cheap insurance for expensive brake part reliability. Available by order at any Kragen/Car Quest store. DOT 4, non-synthetic fluid usable in clutch systems too. Doc --- In VintageLambo@yahoogroups.com, "Mike Dodge" wrote: > Hi All, >I posted a week or so ago as a new member and listed a couple of > problems with my car. One of the problems related to a rear brake > caliper holding on, the brake dragging and subsequent overheating of > disc etc... > Upon further inspection of all system parts i found that the brake > hose had swollen internally and caused almost total blockage of the > fluid to and from the caliper. The caliper did bleed fine but the > hose then acted as a non return valve when the car was driven. > > If you have an early Lambo with ATE manufactured brake lines it may > well be worth checking them. I found two others just starting to > fail the same way as well. I have now made and fitted new hoses and > the improvement in braking performance is very noticeable. > > Cheers > Mike > 1974 P250S owner in New Zealand