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Fastlane » Holden Forums » Holden Technical Talk » vc 1 inch master cylinder rebuild

vc 1 inch master cylinder rebuild

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holden05		#1 Posted : Tuesday, 11 November 2025 6:31:44 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 23/04/2011(UTC) Posts: 158 Thanks: 1 times Was thanked: 2 time(s) in 2 post(s)		finally getting closer to getting the vc on the road, have rebuilt the master cylinder but the brakes are crap even though ive bled them several times. the pedal feel is a bit mushy. ive retraced my steps on the rebuild and referenced the gregorys manual. in it says when removing the cup seals off the pistons, first cut the seal retainers. ive done this but when ive replaced the cups seals there was no replacement retainers in the rebuild kit. are they even used anymore? of all the kits ive seen there are no replacement plastic retainers whats the go here?


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Smitty2		#2 Posted : Tuesday, 11 November 2025 7:19:50 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 6/07/2019(UTC) Posts: 419 Location: bayside Melbourne Thanks: 255 times Was thanked: 39 time(s) in 38 post(s)		Originally Posted by: holden05 finally getting closer to getting the vc on the road, have rebuilt the master cylinder but the brakes are crap even though ive bled them several times. the pedal feel is a bit mushy. ive retraced my steps on the rebuild and referenced the gregorys manual. in it says when removing the cup seals off the pistons, first cut the seal retainers. ive done this but when ive replaced the cups seals there was no replacement retainers in the rebuild kit. are they even used anymore? of all the kits ive seen there are no replacement plastic retainers whats the go here? whose kit you using? The PBR Bosch kits I have used in the past have the retainers maybe try an auto brake specialist
		Club circuit racing...the best fun you can have with your pants on


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holden05		#3 Posted : Tuesday, 11 November 2025 7:24:34 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 23/04/2011(UTC) Posts: 158 Thanks: 1 times Was thanked: 2 time(s) in 2 post(s)		Not sure if the brand but I bought the kit from a local brake shop Would not having them installed be giving me the issue of having rubbish stopping power?


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Smitty2		#4 Posted : Wednesday, 12 November 2025 7:28:45 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 6/07/2019(UTC) Posts: 419 Location: bayside Melbourne Thanks: 255 times Was thanked: 39 time(s) in 38 post(s)		Originally Posted by: holden05 Not sure if the brand but I bought the kit from a local brake shop Would not having them installed be giving me the issue of having rubbish stopping power? .. not installed??? wow! NO stopping power from that master!
		Club circuit racing...the best fun you can have with your pants on


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holden05		#5 Posted : Wednesday, 12 November 2025 3:32:36 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 23/04/2011(UTC) Posts: 158 Thanks: 1 times Was thanked: 2 time(s) in 2 post(s)		spoke to the shop id got the kit from, they contacted their supplied and we told the retainers wernt used anymore


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Smitty2		#6 Posted : Wednesday, 12 November 2025 4:38:39 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 6/07/2019(UTC) Posts: 419 Location: bayside Melbourne Thanks: 255 times Was thanked: 39 time(s) in 38 post(s)		Originally Posted by: holden05 spoke to the shop id got the kit from, they contacted their supplied and we told the retainers wernt used anymore run.. run away quickly from any supplier/manufacturer making a kit DIFFERENT from the original manufacturers'specs especially when brakes are concerned! ps.. what is holding the cups in place? Answer ... nothing! Its a wonder you have any brakes at all
		Club circuit racing...the best fun you can have with your pants on


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holden05		#7 Posted : Wednesday, 12 November 2025 6:33:42 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 23/04/2011(UTC) Posts: 158 Thanks: 1 times Was thanked: 2 time(s) in 2 post(s)		Originally Posted by: Smitty2 Originally Posted by: holden05 spoke to the shop id got the kit from, they contacted their supplied and we told the retainers wernt used anymore run.. run away quickly from any supplier/manufacturer making a kit DIFFERENT from the original manufacturers'specs especially when brakes are concerned! ps.. what is holding the cups in place? Answer ... nothing! Its a wonder you have any brakes at all thats about right, im struggling to find anybody thats has a rebuild kit with the seal retainers recommend anybody?


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