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  1. #1
    Join Date
    Jul 2019
    Location
    The Netherlands
    Age
    49
    Posts
    5

    Default Damaged chrome plating and bare metal spot motorcycle exhaust

    Hello all,

    I have a question how i might be able to fix a bare scraped motorcycle exhaust end. The spot has scraped against the pavement and is about 2 cm by 7 cm big. The chrome is gone and the bare metal can be seen as it rusted a little bit.

    My question is: how might I fix this as cheap and good as possible by myself (hopefully without special equipment)?

    Don't want to spend a lot of money on a new exhaust for my Honda CB750. It was a damaged bike and was able to buy it for a good prize. A new exhaust is in comparison quiet expensive... anyone an idea?

  2. #2
    Join Date
    Oct 2004
    Location
    Southern Highlands NSW
    Posts
    1,894

    Default

    I don't think there is a good cheap fix. Try paint.

  3. #3
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    You can buy a chrome plating kit from Caswells but I think they are expensive. I think that chrome paint is also very expensive. I don’t know how heat resistant it is either.

    I would take it to a chrome plating shop and get a quote.
    Chris

  4. #4
    Join Date
    Apr 2012
    Location
    Healesville
    Posts
    2,129

    Default

    A chrome plater might have a go at it if it can be sealed properly, they dont like soot and carbon in their witches brew

  5. #5
    Join Date
    Oct 2004
    Location
    Southern Highlands NSW
    Posts
    1,894

    Default

    I wish chrome plating was still affordable.
    It's hard to find anyone who wants to do job lots any more anyway.
    Please show me I'm wrong!
    I'm starting to think it might be worth sending stuff overseas to get chromed, but that's likely a risky proposition.

  6. #6
    Join Date
    Oct 2004
    Location
    Southern Highlands NSW
    Posts
    1,894

    Default

    Quote Originally Posted by tontonh View Post
    750 Honda is classed as vintage now
    I prefer the more accurate term, "old bike".

  7. #7
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    I just checked the price of chrome plating kits. I reckon a new exhaust would be cheaper.



    Sent from my iPad using Tapatalk
    Chris

  8. #8
    Join Date
    Aug 2008
    Location
    Melbourne
    Age
    34
    Posts
    1,075

    Default

    I remember DIY chrome plating came up a little while ago; aside from being expensive, it's an extremely toxic process https://en.wikipedia.org/wiki/Hexava...omium#Toxicity

    Either replace the part or get it done professionally, it's not worth the risk of doing yourself some serious harm.

  9. #9
    Join Date
    Jan 2004
    Location
    Mackay North Qld
    Posts
    6,446

    Default

    Hi and welcome to our forum,

    In Australia, aftermarket automotive accessory shops carry heat proof exhaust paint .

    You need to look in your own country for this. its around $25 - $30 for a spray can of the stuff.

    Be sure that that the paint you do end up using will survive the exhaust pipe temperatures. VHT is a brand I can recall.

    I have owned cars that the headers glowed red nears the head, in the dark after a good long run.The paint needs to be heat proof.

    Grahame

  10. #10
    Join Date
    Jul 2019
    Location
    The Netherlands
    Age
    49
    Posts
    5

    Wink

    Many thanks for the replies!

    Previous owner did a engine revision: new clutch plates, clutch springs, oil,new spark plugs. new light as it was damaged. Enough thread on tyres. Just a slide damage with exhaust and side panel was not fixed....

    This "old" bike just drives soo nice =) compared to my old RGV 250 Suzuki.... RGV drives nice but not nice for some quiet driving around...

    Hmm, creatively thinking..... Damged spot is at the backseat side. The temperatures should be well under 100 degrees. I think I am going to try some oil to cover the rusty places, then a patch of high temperature resistant aluminium tape
    It's just to expensive to replace the exhaust completely. It costs about 300 euro. The bike was totally 975 euro... =(

    Possible cheap fix???

  11. #11
    Join Date
    Jul 2019
    Location
    The Netherlands
    Age
    49
    Posts
    5

    Default

    Today I asked a motorcycle sales person / "mechanic"?. He said it will take ages to rust through. On the internet I read when metal becomes warmed / heated it will rust faster. So, I decided to buy a can of primer and paint can that protects against heat (radiator paint. So I am going to try the advice that someone suggested.

    Better sure then sorry!

  12. #12
    Join Date
    Mar 2021
    Location
    India
    Age
    29
    Posts
    2

    Default

    Did it worked and what is the name of this paint

  13. #13
    Join Date
    Jul 2019
    Location
    The Netherlands
    Age
    49
    Posts
    5

    Default

    Hello,

    It is an rust converter paint (Brunox primer) on the spot, then I paint it over. But the rust inside cannot be reached completely. It is showing a bit of rust through the paint a bit.

    Although not perfect it will slow down the rusting through.

    Many thanks for the help so far.

  14. #14
    Join Date
    Oct 2020
    Location
    Greendale Vic. Australia
    Posts
    64

    Default Another tip

    Not that this will help you with a CB750, but I thought I'd chuck this in for 'general consumption'. Many later zorsts have a cylindrical stainless steel outer over the muffler section, they often get scratched.
    A nice cheap way of fixing, is to get a short length of stainless stove flue, cut off the scratched one and rivet or screw on your new polished up flue.
    You'll probably need to cut a section out lengthwise and tighten up the radius to suit, -easy. The one I made for my '89 Suzi GS500 looks like new.

  15. #15
    Join Date
    Jul 2019
    Location
    The Netherlands
    Age
    49
    Posts
    5

    Default

    Aah yes, that would be a good way to fix it. not thought about that. Actually I hope i will not have to fix my muffler anytime I have my current motorcycle. It is the only good transportation I have. ^_^) Apart for my trustworthy foldable bikes. But that takes like 4 or 5 times the time to get to my work....(30 min vs 2 hours plus)

    Thank everyone for the replies. Appreciated!

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