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Brakes slow at responding

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brett

Post subject: Brakes slow at responding

Posted: Wed Oct 19, 2011 10:17 pm

1275cc

Joined: Tue Aug 17, 2004 1:21 pm
Posts: 3391
Location: Western Queensland

Hi guys, I have a small issue, the brakes seem a tad slow.. ie press the pedal takes a moment to kick in. and then they stay on for a moment.

New Master cylinder
New brake Booster
Running mini sport 4 pot calipers
new brake hoses....
Any ideas? the Brakes havent been used in 12 months so I am hoping it could be a bit sticky, and will free up with use. :roll:

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Harley

Post subject:

Posted: Wed Oct 19, 2011 10:19 pm

1360cc

Joined: Mon Aug 23, 2004 10:07 pm
Posts: 10654
Location: SE Melbourne

Immediate thoughtsa for problems:

1. pistons sticking on the seals, remove and lubricate.
2. One way valve in air line to booster suspect.
3. Minisport caliper.

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brett

Post subject:

Posted: Thu Oct 20, 2011 12:07 am

1275cc

Joined: Tue Aug 17, 2004 1:21 pm
Posts: 3391
Location: Western Queensland

lol. Yeah just going to run it for a bit, and see how it goes! it feels sticky.

so Lets see what happens!

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Harley

Post subject:

Posted: Thu Oct 20, 2011 9:04 am

1360cc

Joined: Mon Aug 23, 2004 10:07 pm
Posts: 10654
Location: SE Melbourne

Check the rear brakes too, my rover used to have 'sticky' brakes sometimes when the handbrake was released.

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drmini in aust

Post subject:

Posted: Thu Oct 20, 2011 9:40 am

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39762
Location: near Baulkham Hills, NSW

Booster may need an overhaul, sounds like the air valve may be sticking...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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brett

Post subject:

Posted: Thu Oct 20, 2011 12:43 pm

1275cc

Joined: Tue Aug 17, 2004 1:21 pm
Posts: 3391
Location: Western Queensland

Hope not, Its only brand new! Just going to see how it comes out.. COuld be a bit sticky from new

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69k1100

Post subject:

Posted: Fri Oct 21, 2011 9:14 pm

998cc

Joined: Sun Sep 04, 2011 10:46 pm
Posts: 526
Location: S.A

I'm no expert but just a thought, are the hoses the correct diameter and length? Of they are too narrow this may cause a restriction to fluid flow. Check them against the old ones.

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