The 306 I currently have has always had worse, inconsistent pedal feel than the others I have owned in the past. This has recently gotten worse. It is really slowing me down on track as the inconsistency and sponginess doesn't inspire confidence at all and I'm braking too softly, too early.

I've had it a while and the brakes have been bled many times in my ownership, braided lines all round etc.

So, I have come to suspect that the master cylinder is at fault, and I'd like to change it.

Soon I will be changing over to wildwood calipers, and I am presented with a choice of buying a new, standard master cylinder, or converting to a larger one as per Dan's nice guide:
http://www.306gti6.com/forum/showthread.php?id=160426

The larger one also has the advantage of being a bit cheaper but that's not such a concern compared to getting this sorted properly.

Is the larger one going to be suitable for wilwoods, or are they not bigger enough over standard for it to be a sensible setup? Or will both be suitable and down to preference for a longer or shorter pedal travel?

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61k miles Ph.1 Diablo '6 Project Thread

To clarify: I haven't fitted wilwoods yet, everything about my current braking setup is stock excluding braided hoses.

There's a slight air noise when pushing the brake pedal now.

Is there not a chance of failing seals within the MC?

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61k miles Ph.1 Diablo '6 Project Thread

Ok I'll try that. Thanks.

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61k miles Ph.1 Diablo '6 Project Thread