Brake Upgrade - 130 300tdi

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Originally Posted by shack

Yep do this.

We have 2 130 TDI's, one very heavy, if everything is stock and working, they are fine, as good as any vehicle.

As mentioned, cracked master cylinder, assist the vacuum pumps die after the master cylinder cracks.

With the engine off, pump the brake pedal several times... Then hold it in reasonable firmly while starting the engine, the pedal should sink in noticeably, if not, there's a vacuum problem.

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Great thanks will test this today!

Mike has some info for you. Have to say, I hadn't thought of the crankcase pressure angle before...

https://youtu.be/0Fcrvs9x8Vc'si=0YgOUwyzVLtb6QWo

I just converted to discs but found not much improvement so I put a pressure gauge on the bleed nipples and I am getting 1250 odd PSI from all of them. Anyone else get a pressure reading for comparison?
Keith

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Originally Posted by 123rover50

I just converted to discs but found not much improvement so I put a pressure gauge on the bleed nipples and I am getting 1250 odd PSI from all of them. Anyone else get a pressure reading for comparison?
Keith

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What vehicle are we talking about and what year?

Why would you think discs would improve braking performance?