Caliper Refurb

[srichards]

I've just checked my spare calipers and definitely 28 and 32. I can probably find my pistons this evening (in an ice cream tub in the garage somewhere) and measure up the height and seal gaps if you need.

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Thanks. That would be useful.

[Puggie]

Does this help?

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[srichards]

Does this help?

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That's very helpful.

[V!per]

I wonder if our friend from the poosey pipe could get couple of sets of those

[steve2003rs6]

Viper. Anything can be made.
Would need to know the material.
And cost of new in comparison to manufacturing cost to see if there is any benefit.
Sometimes it’s cheaper to buy off the shelf.
Also. Machine Shop can be very fussy making parts for anything to do with a braking system.

I recall a motor bike enthusiast calling round to have his bike discs skimmed.
Although we have done hundreds for cars.
The manager refused to do them for bikes.

[Puggie]

They are barely magnetic and not that heavy, so I suspect stainless steel, the main body I believe is hollow (from the weight) and the top cap pressed on. The overall look is grey, I'd guess a ceramic coating of sorts (they dont look or feel like phenolic pistons from a motorbike caliper. I must say, my calipers were seized, I used an enerpak hand pump to get the pistons out and they cleaned up pretty well, certainly good enough to re-use IMHO. The regular chrome plated steel pistons in my Honda calipers look god awful in comparison despite being a similar age. The bleed nipples on these calipers were corroded in solid, I ended up drilling and helicoiling the caliper bodies, no amount of heat or abuse would shift them (tig welded nuts over them in the end and the nips sheared off at the calipers surface).

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[steve2003rs6]

My spare original calipers are in the garage at the moment. The bleed nipple threads in the caliper are knackered. Intend to have them repaired sometime in the near future.
Thought of helicoiling but unit 20 suggested another repair superior to helicoil.
In the meantime I had new phaeton 8 pot calipers installed at unit 20. Grizz recommended them.
Very impressed with them so repairing the originals has been put on hold at the moment.

[srichards]

The pistons will be available it's just which ones. Mine is booked in for next week so I'm going to try and make sure I find out exactly which ones are ordered.

[steve2003rs6]

Hope all goes well for you suz.
And the price isn’t extortionate.

[srichards]

The after market ones seem to be about £10 a pop. They may be fine in which case I'll be no help at all

[Puggie]

The only corrosion on any of mine was minor and above where the dust seal sits (you can see it on the picture I posted of the smaller piston). This corrosion was slight and cleaned off very easy with a little fine scotch disc in a dremel. I'd be surprised if you really need new pistons.

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[srichards]

Didn't need new pistons, oddly enough.

Piston part numbers will have to remain a mystery!

[TechNick]

On the aesthetics side, has anyone found a decent OEM substitute for the logo on the calipers? (I'm assuming you can't get them from the dealers anymore, if you ever could).

[Lander91]

On the aesthetics side, has anyone found a decent OEM substitute for the logo on the calipers? (I'm assuming you can't get them from the dealers anymore, if you ever could).

Ive been searching and found this crew:
https://www.brakecaliperdecals.co.uk/Au ... ake-Decals

Option 5 would be close to standard, not sure if the black of the decal would match the black of the caliper, and if these could effectively cover the faded factory ones.

Worth a look as they're cheap enough.

I don't feel up $$helling out for a stenciled logo to be painted on.

[TechNick]

On the aesthetics side, has anyone found a decent OEM substitute for the logo on the calipers? (I'm assuming you can't get them from the dealers anymore, if you ever could).

Ive been searching and found this crew:
https://www.brakecaliperdecals.co.uk/Au ... ake-Decals

Option 5 would be close to standard, not sure if the black of the decal would match the black of the caliper, and if these could effectively cover the faded factory ones.

Worth a look as they're cheap enough.

I don't feel up $$helling out for a stenciled logo to be painted on.

Thank you. Yeah, seen those before and think you're right - they're probably the best out there, currently.
As you say, for the price they'd be worth a punt