Graham These master cylinders are notorious for not responding to reconditioning: sometimes it works and sometimes it doesn't when re-sleeved and re-kitted. I tried everything suggested and it's very hit and miss. If you want to save yourself a lot of grief, take the mc to Auto Brake and Clutch in Marion Square and see Peter Francevich. He will be able to recondition it for you. ABC have been successful in getting brakes on my Green GTV and just last week on the Spider 200 Veloce. When you put it all together, good luck with the bleeding! That's another delight in store for you. The simplest option, take the car to them and make it their problem. They don't charge like a wounded bull like some other outfits when they see an Alfa in their workshops.
Yes, I tried cup seals and gave up on them. Les in Wellington, NZ --Date: Sat, 17 Sep 2011 22:21:59 +1200 From: Graham&Joan Hilder <[email protected]> Subject: [alfa] Alfa Digest: 105 GTV brake MC seals Greetings all - Alternative seals for 105 GTV master cylinder? I'm refurbishing the brake master cylinder on the 105 ('71 Euro GTV, standing pedals, underfloor tandem MC, dual remote boosters, all that carry-on). The MC is a Bonaldi 7/8 inch unit, and like a lot of old Italian ones it uses oval hydraulic seals instead of the usual cup seals with a lip that most other MCs seem to use. I've heard form vintage brake specialists etc that these oval seals often don't work as well as normal cup seals, so I wonder if there's any reason not to try cup seals in the Bonaldi MC? Or in the Benditalia GTV underfloor MC that I've got as a spare, that also uses oval seals. Certainly I've never been impressed by the GTV's pedal feel so I'm keen to find a way to improve it. Has anyone in the group ever tried this use of cup seals, or are there any comments on this idea? I got the idea from this website: http://www.brakecylinder.com/oddsandends.htm#Benditalia_Bonaldi. It sounds good! It is however on a slightly different Bonaldi cylinder from the GTV one I'm working on. Thanks all, Graham Hilder, NZ '71 GTV, '82 Alfasud Sprint, '84 Alfasud ti, '99 Alfa 156. ------------------------------ -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
