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3rd October 2019, 10:48 | #1 |
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Crash beam bolts - stainless?
The heads on my rear crash beam bolts are decidedly rusty. Any reason not to stick some stainless ones in there instead? If so, what size?
(8 bolts - 4 per side) |
3rd October 2019, 11:29 | #2 |
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I've changed as many bolts as I can with stainless, slam panel, headlights, engine etc so no reason I can see why not
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3rd October 2019, 11:36 | #3 |
Precise
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Make sure that the tensile strengths are adequate, S/S is not a direct substitute in many cases. Also beware, just because its called S/S does not mean it will not rust. In contact with rust, many will rust in due course.
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3rd October 2019, 13:15 | #4 |
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Stainless, actually means it will stain less. (Rust)
I use stainless wherever possible on my motorbike restorations. It's usually stronger, but will snap rather than bend. For the use you are looking at, you will have no problem at all. All my front end is now attached with stainless bolts, nuts, washers etc etc. Just a quick note:- stainless, when in contact with certain other metals will actually promote corrosion. E.g. alloy. Keep them separate with something like copperslip.
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3rd October 2019, 13:27 | #5 |
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I had no idea of that, but now you say it, it makes perfect sense.
Thanks, I've learnt something new today . Cliff
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3rd October 2019, 13:33 | #6 |
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Personally I only will use stainless fixing for none critical areas as no crash testing or durability testing has been done on the vehicle with stainless ones.
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3rd October 2019, 11:34 | #7 | |
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Quote:
In saying that, I dont know or understand tensile strengths of bolts, but have read of potential issues using them on some components. But I would verify replacement bolts or whatever variety were up to the same level of strength as the original (even if rusty) Sent from my SM-A600FN using Tapatalk
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3rd October 2019, 17:48 | #8 | ||
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Quote:
Quote:
Sent from my SM-A600FN using Tapatalk
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3rd October 2019, 18:51 | #9 |
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If what's currently on is an 8.8 (and I can't see any reason it would be anything more), then an A4-80 bolt is almost identical strength and a good replacement.
Not looked to see what the crash structure is made from, if it's steel then be careful that you don't shift the rust from the bolts to it...by using stainless into unpainted steel you'll set up a little electrochemical cell (a battery) and the steel will rust. |
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