The "Holy Grail" ?

The "Holy Grail" ?

Author
Discussion

phillpot

Original Poster:

17,105 posts

182 months

Thursday 9th October 2014
quotequote all
Eternal life? Yes, but for your bolts. High Tensile stainless steel bolts .

Perhaps I have a little OCD but the rusty caliper mounting bolts have always bugged me so after a bit of searching I found a company that can supply stainless at the equivalent of 10.9 tensile strength. That's the good bit.

Ironically my search took me all around the World only to end up at a supplier here in Redditch where I live. Another good bit.

Now the not so good bit, only sell in box's of 50 irked

So even doing front and rear calipers that'll leave me 42 spares ( I'm talking M10 x 30mm for the 240 or 260mm brakes, no good for big 888/887 calipers which are M12).

With VAT, postage etc. I think they'd be about £8 per set of four.


Please form an orderly queue........





Edited by phillpot on Wednesday 22 October 18:39

AutoAndy

2,265 posts

214 months

Thursday 9th October 2014
quotequote all
...i trust that the bits it connects, like the caliper are st st as well to avoid excessive galvanic action on that sort of critical component...

Yours
Concerned of Norfolk

phillpot

Original Poster:

17,105 posts

182 months

Thursday 9th October 2014
quotequote all
Dear Concerned of Norfolk,

from my discussion with the supplier and what I've read in articles like this, combined with my experience of using stainless (mainly A2 70) bolts on my car and having seen stainless fixings used on air conditioning plant that stands outdoors in all weathers I don't think there is an issue.

But, of course, everyone must make their own decision.



Jaye R

790 posts

224 months

Thursday 9th October 2014
quotequote all
Hi Mike

Put me down for a set - I'll keep them safe until I get to the part of the re-build that involves putting the brakes back on smile

I'm still chassis painting at the minute smile

Cheers
Jaye

Scubaman04

64 posts

131 months

Thursday 9th October 2014
quotequote all
Hi

can you put me down for a set, I will need them when I start my rebuild

thanks

Jon

AutoAndy

2,265 posts

214 months

Thursday 9th October 2014
quotequote all
phillpot said:
Dear Concerned of Norfolk,

from my discussion with the supplier and what I've read in articles like this, combined with my experience of using stainless (mainly A2 70) bolts on my car and having seen stainless fixings used on air conditioning plant that stands outdoors in all weathers I don't think there is an issue.

But, of course, everyone must make their own decision.

OK it says rate of corrosion with st st in CSt is much lower...I guess your brakes will not fall off and you will survive... wink

This is what I pay my licence fee for - well done BBC

Reasonably satisfied of Norfolk

phillpot

Original Poster:

17,105 posts

182 months

Thursday 9th October 2014
quotequote all



"Only" 34 to go!

Top Gear TVR

2,244 posts

153 months

Thursday 9th October 2014
quotequote all
go on then, I'll take a set of them and 4 spares :-)

Top Gear TVR

2,244 posts

153 months

Thursday 9th October 2014
quotequote all
hold on.....are mine 10mm, i think they are I'll check.

v8s4me

7,234 posts

218 months

Thursday 9th October 2014
quotequote all
I'll have a set please. thumbup

greymrj

3,316 posts

203 months

Thursday 9th October 2014
quotequote all
You are OK on corrosion. Tensile strength is fine. These bolts are however primarily in sheer rather than tension, I simply do not know if the stainless option would have any significant failure strength difference in sheer. If anybody can find any reference to clarify that then I would be in for a set.

mep12345

2,061 posts

200 months

Thursday 9th October 2014
quotequote all
Google chloride stress corrosion cracking. I work with nuclear plants where we are paranoid about this hence I won't touch stainless where there is any stress. I reserve then for cosmetic only areas

magpies

5,129 posts

181 months

Thursday 9th October 2014
quotequote all
Sorry to hijack
Hey Mel - which nuclear facility? I worked at Hartlepool and on fuel route for a number of years.... I share your views on st st. Wonder if others realise Milk of Magnesia is the lubricant of choice

AndrewS2

334 posts

163 months

Friday 10th October 2014
quotequote all
Yes please Mike! Same as Jaye - no rush for them just let me know how you want payment etc.

Been a bit quiet recently as I currently have what is left of my S2 waiting for my attention due to a gearbox issue on the MG. As the engine lift is in my garage, thought it would be rude not to! So currently have a 2.9 V6 on a stand AND a 1.3 4 cylinder engine on my garage floor. Lets hope they find their way back into the correct cars eh…!!

MG is on a seriously short deadline as it is going to be our wedding car in December!! New gearbox for MG has arrived, engine cleaned and painted almost ready to start re-assembling… wish me luck! smile

s p a c e m a n

10,752 posts

147 months

Friday 10th October 2014
quotequote all
mep12345 said:
I work with nuclear plants
yikes

Little Shop of Horrors?

AutoAndy

2,265 posts

214 months

Friday 10th October 2014
quotequote all
AndrewS2 said:
Yes please Mike! ... my attention due to a gearbox issue on the MG.
Best wishes for the wedding...hope the MG is ready in time...

...was the gearbox finished off by a certain trip this summer where you were keeping up with a load of TVRs... wink

Stwdv

273 posts

123 months

Friday 10th October 2014
quotequote all
Guys I would have to concur with the negative comments on S/S
I worked with it for 10 years in all sorts of industries and I would not use it in high strength corrosive environments. There are many varieties of S/S for all different environments.
It will also rust if in contact with carbon steel eg if you use a carbon steel wire brush on S/S it will rust

phillpot

Original Poster:

17,105 posts

182 months

Friday 10th October 2014
quotequote all

This is the product, Bumax 109, I'm convinced and if enough others still are by Monday I shall place the order.


Joe, would that be two sets (8 bolts) front and rear?

Steve, your big front calipers could well be M12?

Andrew, Congratulations!




Top Gear TVR

2,244 posts

153 months

Friday 10th October 2014
quotequote all
I'll offer a spanner up at the weekend, that'll tell me

Barkychoc

7,848 posts

203 months

Friday 10th October 2014
quotequote all
Surely there's some worry about nothing here?

You are going to lock the front wheels up long before the caliper bolts ever let go?

Just my non scientific penny for thought!