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Locking nuts - without the nylon
Jasper - 27/7/09 at 04:23 PM

I need some nuts to bolt the turbo to the downpipe, it expands and contracts so much with extreme heat none of the nuts will stay on with even with split washers.

Obviously can't use nylocks as they will melt, so is there anything else I can use?


Flamez - 27/7/09 at 04:26 PM

Apparently ford mondeo use an exhaust nut with a "tang" built into them.


James - 27/7/09 at 04:27 PM

Various options including using lockwire. Or even high temperature locktite.

But the best options are the special type of nuts that I used on mine.... but I've forgotten the damn name of them whilst typing this!!! lol

Soon as I remember I'll post again.

Or, ask Fozzie, as it was her that first told me about them!

Cheers,
James


indykid - 27/7/09 at 04:34 PM

we've used nordlock washers on avoneer's turbo install in his mx5. seem to be doing well so far.

you can use all metal locking nuts like stover nuts but you might suffer the same issues. if you can get hold of aerotight nuts, they're probably superior

how many do you need anyway? i think i might have a few spare pairs of nordlock washers if you want to give them a go
tom


Davey D - 27/7/09 at 04:56 PM

ive got some for that purpose. i used them on the manifold on my 200sx.

Im not sure what they are called, but ill get you some pics, so you can see what they are like


DarrenW - 27/7/09 at 05:12 PM

Ive used bugger nuts on a manifold before.


MikeCapon - 27/7/09 at 05:15 PM

What about binx nuts?


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02GF74 - 27/7/09 at 05:55 PM

I would say you need these puppies.


Philidas Industrial Nut Zinc / Yellow

Steel all metal locking nuts, grade 8 Zinc / yellow plated. Made to ISO 8098 / 2


Davey D - 27/7/09 at 06:18 PM

quote:
Originally posted by 02GF74
I would say you need these puppies.


Philidas Industrial Nut Zinc / Yellow

Steel all metal locking nuts, grade 8 Zinc / yellow plated. Made to ISO 8098 / 2



They are like what i used


Volvorsport - 27/7/09 at 07:17 PM

K nuts , aerospace spec , used on cossies .

Nick skidmore sold me loads a while back .


Danozeman - 27/7/09 at 07:33 PM

Theres nuts that look like theyv been squashed in a vice.


scutter - 27/7/09 at 09:45 PM

K nuts are what you need Japser, good enough for 650-750degF in the back of a jet engine.

Merlin Link

ATB Dan.


Jasper - 28/7/09 at 09:07 AM

Thanks chaps


balidey - 28/7/09 at 12:25 PM

my company tends to use (what we call) Nedlock nuts, I think these are also the same as the stover nuts. They have the top of the nut deformed in to pinch the thread. We have done vehicle life testing at Mira with loads of different nuts and we now use these as our standard, and have for many years. We had poor results from the nordlock washers and the ones with the washer type thing attached on the top end.

[Edited on 28/7/09 by balidey]


Vindi_andy - 28/7/09 at 12:41 PM

putting my H&S pedant hat on companies now cannot sell yellow plated anything as it doesnt conform to RoHS. the yellow colour comes from Hexavalent chrome which is a no-no

They have to use Trivalent chrome plating which is a silvery colour.

I only know this because I am the RoHS coordinator for my company which sells industrial control gear.


adithorp - 28/7/09 at 07:27 PM

Manifold nuts? Usually copper coated steel nuts with the last thread crimped.

http://www.workshopsupplies.co.uk/index1.html

u2u sent

adrian


James - 30/7/09 at 03:58 PM

quote:
Originally posted by Volvorsport
K nuts , aerospace spec , used on cossies .

Nick skidmore sold me loads a while back .


'K' nuts.

That's the one!

Cheers Volvorsport!