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Aluminium Bolts/zinc Coated Clips For Undertray/diffuser?


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#1 Eddles

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Posted 16 March 2019 - 10:20 PM

I'm sure this has been discussed to death, but I am wondering whether I could use aluminium bolts and zinc coated clips for the engine undertray and rear diffuser?

 

Cheers!



#2 Johnboyhgt

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Posted 16 March 2019 - 10:54 PM

I use nylon washers.

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#3 Ormes

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Posted 18 March 2019 - 06:11 PM

Before understanding galvanic corrosion, I used S/S and managed to corrode the tray slightly.

 

I now use BZP washers, spire/c clips and button heads, all with a bit of copper slip.

 

I assume you are considering aluminimum due to corrosion resistance, but they could be a total and utter nightmare if you strip the threads, which is likely over time with alu.

 

I would do as I do but hey, what else am I going to say :)



#4 Eddles

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Posted 20 March 2019 - 07:39 PM

Ormes - sounds ideal to me!  What about the bolts themselves - mild steel, BZP, or stainless?

 

Cheers - Piers



#5 Ormes

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Posted 20 March 2019 - 09:19 PM

I just use BZP everything, including the bolts thumbsup



#6 FLD

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Posted 22 March 2019 - 12:00 PM

I use the quick release fasterners that A4 bolt man does. Can't remember his website to post a link but they are great IMO. I think these are a plated steel clip with a chrome plated steel pin which also has a nylon washer.

#7 hairy

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Posted 22 March 2019 - 02:51 PM

I use the quick release fasterners that A4 bolt man does. Can't remember his website to post a link but they are great IMO. I think these are a plated steel clip with a chrome plated steel pin which also has a nylon washer.

 

:yeahthat:
 



#8 chris_uk

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Posted 23 March 2019 - 04:50 PM

i just used nylon washers with the standard bolts and washers. 



#9 oakmere

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Posted 25 March 2019 - 12:26 PM

I use stainless bolts and washers with a nylon washer between.
This stopped the corrosion of the alloy. Painting the diffuser has also helped.




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