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ickle

Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1728

2008 Defender 110 Puma 2.4 CSW Alpine White

replacement calipers - stainless pistons

I replaced the front discs with std vented AP units this weekend and fitted Greenstuff pads, brakes are now spot on but the pistons are really corroded.

I can get new complete AP units for about £100, but I assume these will have plated pistons again and as the originals have only lasted 6 years, does anybody make a new caliper with stainless steel pistons? Or do I buy new calipers and fit stainless pistons to these or rebuild my present ones??

Cheers Keith

1st Jun 2014 5:56pm

jimbob7

Member Since: 06 Jul 2013
Location: uk
Posts: 2055

I bought new last year from Brookwells (£89(ish)) coz of the same thing,only I plan to clean and re-grease the pistons every 12 months ( silicon grease NOT copper grease),with simple,basic maintenance they should last a lot longer the 6 years, fyi,mine were done after 7

. Pov.spec,ftw. 2006, 110,TD5.

1st Jun 2014 8:05pm

munch90

Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

I would not bother with std pistons , even if I got new calipers I would change pistons to stainless

I don't know of any calipers you can buy with stainless already fitted

so it does work out quite a lot more expense , but chrome plating seems so crap on the pistons these days

there are some on the bay that are stainless and made in England

not britpart or Chinese

I just changed mine to stainless

1st Jun 2014 8:48pm

landybehr

Member Since: 17 Apr 2013
Location: -D-
Posts: 173

I think / hope the pistons have changed in the s/s alloy and quality - as I haven´t come across opposite position for the last time.

It must have been 10 years ago that I experimented with s/s pistons. Were bough from Z..s those days.
I wasn´t happy with them. After not much more than 2 years I had to overhaul the callipers again. They were weeping and the area around the dust seal was corroded - worse than much older callipers (showed them to a friend with a garage, he hasn´t seen that degree of rust on any DEfender before). I concluded that the s/s used was too soft and didn´t rust but suffered from scratches which allowes brake fluid to pass. Think electroly. corrosion shouldn´t be an issue between steel and stainless steel (?).

Would be glad to hear that my experience was an exception.
Until then I currently regard the callipers as wearing parts and give the relatively low costs of new items renew them at least every 5 years - dependend on how pistons look and move or if they are sticky.

5th Jun 2014 10:30pm

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