993 front discs psychoanalysis

[Orangecurry]

Ocho said:

For the record, I got the Brembos for the rear from Autodoc. Best price I could find for a pair that matched the fronts. They were £157 delivered for the pair, which feels like a rip-off, but only because of the ridiculously low price of the front discs from GSF!

£253 all in for discs and pads all round doesn't feel too bad to me. Callipers don't look that great which is hardly surprising given the miles, so I'm going to clean them up, paint them red and reapply the Porsche graphics whilst I'm at it.

Yes - Autodoc not only seems the best price, they are also in stock

(apologies if teaching your grandma about sucking eggs...but)

I hate to do this to you, but when you take them apart, do check how easily the old pads come out of the calipers, and more importantly how easily the new pads go in.

There is a stainless steel plate in each end/side of the caliper, which over time (due to bimetallic? corrosion) tends to lift away from the caliper base slightly, enough to prevent the pads from 'free' movement. If the pads don't move in/out as they should, they will be either wearing away too quickly, or not engaging correctly against the disc.

Hope yours are all good. One giveaway is if the old pads come out easily, and the new pads don't go in, the old pads may have been filed down to alleviate the issue.

[Ocho]

Orangecurry said:

Yes - Autodoc not only seems the best price, they are also in stock

(apologies if teaching your grandma about sucking eggs...but)

I hate to do this to you, but when you take them apart, do check how easily the old pads come out of the calipers, and more importantly how easily the new pads go in.

There is a stainless steel plate in each end/side of the caliper, which over time (due to bimetallic? corrosion) tends to lift away from the caliper base slightly, enough to prevent the pads from 'free' movement. If the pads don't move in/out as they should, they will be either wearing away too quickly, or not engaging correctly against the disc.

Hope yours are all good. One giveaway is if the old pads come out easily, and the new pads don't go in, the old pads may have been filed down to alleviate the issue.

Thanks OC - hopefully all ok but useful info (that I didn't already know!). Cheers

[Ocho]

OC - quick question. After the change when I top up the brake fluid again, does it matter which DOT 4 brake fluid I use. Are there any complications of mixing synthetic with non (or are they all synthetic these days etc?).

I'll likely do a full flush later, but one thing at a time...

[Orangecurry]

oooh no I'm not going to answer on that - the internet will have a better answer than I could come up with, and it depends what you have in there already.

Also - putting new pads in, you won't be adding brake fluid - you might even be syphoning some out

As you say (afterwards) do a full flush, especially from the clutch slave cylinder, so you could aim to expel most of the old fluid anyway.

And you didn't ask, but I use Motul RBF, as it is very very good, but doesn't cost stupid amounts. Is the latest RBF 660?

[Ocho]

Orangecurry said:

oooh no I'm not going to answer on that - the internet will have a better answer than I could come up with, and it depends what you have in there already.

Also - putting new pads in, you won't be adding brake fluid - you might even be syphoning some out

As you say (afterwards) do a full flush, especially from the clutch slave cylinder, so you could aim to expel most of the old fluid anyway.

And you didn't ask, but I use Motul RBF, as it is very very good, but doesn't cost stupid amounts. Is the latest RBF 660?

Yup, knew to take some out at the start so it doesn't spill over, but was thinking about topping back up if I take too much out at the start. I guess just take a bit out at a time for each corner so I don't need to top up...

[Orangecurry]

Time to start some DIY on my (mostly) self-serviced worthless old banger...

(yes there are two sets of front pads in the photo; don't worry I won't fit them all )

Rears exactly the same quality (obviously) as the fronts.

[Flat Six Pete]

Thanks for the thread OC. Interesting reading over the aesthetics of the hats. Certainly has me hooked for Brembos next time.