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I'm in the process of adapting a stainless steel roof rack to take my fiamma awning and then making a roof crate too,
all the rivnuts have rusted to the bolts so ive got most of them out and new rivnuts and A2 stainless bolts to go back in
question is can i get some kind of anti galvanic assembly paste to stop this happening again?
Ta
Dan
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'90 Audi B3 Coupe 2.3 Auto [gone]
'92 Audi S4 Avant 2.2 AAN Turbo Auto [gone]
'93 Audi 80 Avant 1.9TDi [gone]
'96 Audi A4 Avant 2.6 Quattro [gone]
'97 VW T4 1.9td LWB [gone]
'03 Skoda Octavia 1.9TDi [gone]
'05 VW T5 Shuttle LWB 1.9TDi
'15 VW Caddy Maxi Kombi 1.6TDi
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A small zinc plate/washer on top of the rivnut is about as good a result you could reasonably get - along with copper grease liberally applied everywhere! Random fact - if you loosely wrap an iron rod in zinc mesh... the nail won't rust! 100% coverage isn't needed for the zinc to become sacrificial  |
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You're like a crazy backyard genius! |
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Hi, try using stainless rivnuts. All components the same metal so no electrolytic action.
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just ordered some stainless rivnuts, so obvious don't know what i didnt think of it  |
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'90 Audi B3 Coupe 2.3 Auto [gone]
'92 Audi S4 Avant 2.2 AAN Turbo Auto [gone]
'93 Audi 80 Avant 1.9TDi [gone]
'96 Audi A4 Avant 2.6 Quattro [gone]
'97 VW T4 1.9td LWB [gone]
'03 Skoda Octavia 1.9TDi [gone]
'05 VW T5 Shuttle LWB 1.9TDi
'15 VW Caddy Maxi Kombi 1.6TDi
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They'll cause the bodywork they're attached to, to rust at an accelerated rate don't forget |
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You're like a crazy backyard genius!
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thankfully they will be attached to a stainless roofrack |
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'90 Audi B3 Coupe 2.3 Auto [gone]
'92 Audi S4 Avant 2.2 AAN Turbo Auto [gone]
'93 Audi 80 Avant 1.9TDi [gone]
'96 Audi A4 Avant 2.6 Quattro [gone]
'97 VW T4 1.9td LWB [gone]
'03 Skoda Octavia 1.9TDi [gone]
'05 VW T5 Shuttle LWB 1.9TDi
'15 VW Caddy Maxi Kombi 1.6TDi
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Hi, you only get electrolytic action when the metals are in contact with one another. The coat of paint on the vehicle is enough of a barrier.
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Should be OK there since won't be done up tight, but stainless-stainless can gall. Used stainless bolts into ally on bikes with copperslip for 20+ yrs, no probs. There is a paste but believe it's fairly nasty stuff.
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'66 Amazon <-> '94 LS400 <-> '86 Suzuki 1135 EFE
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scruff
Part of things
Posts: 621
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Duralac.
Comes in tins and tubes.
Used all over the Elise where steel meets ali.
It's sticky and a pain to get off your hands so wear gloves.
It'll also seal the threads and acts as a mild threadlocker.
It doesn't set fully and remains slightly rubbery.
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1994 Lotus Esprit - Fragile red turbo with pop up lights.
1980 Porsche 924 - Fragile red turbo with pop up lights.
I spy a trend...
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