675.cc • Triumph 675 Forum

Cylinder head valve guide wear!

Discussion in 'Maintenance & Tweaks' started by gleavey89, Feb 13, 2017.

  1. gleavey89

    gleavey89

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    Hi. I have an 06 daytona and The head has just been inspected. The valve guides do have alot of wear as do the valves. However I soon found the valve guides can't be replaced. Is there an engineering way around this? ie can liners be put into the guides etc or do I have to bite the bullet and get another head? Any help is appreciated.
    Thanks
     
  2. JohnnyPS4

    JohnnyPS4

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    I don't think it wouldn't be financially viable to be honest, bought a set of 6 off the shelf guides for my classic triumph not long back for around £15 each then fitted them myself, you'd probably need some 1offs making so it'd be more expensive again unless something from another bike fits. For what it's worth and the work involved getting the tolerances right you'd probably be better off looking for a replacement head.
     
  3. I have an 06-07 head for sale, where abouts are you? It will come minus the cams though as I need those for a project. PM if interested.
     
  4. gleavey89

    gleavey89

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    Thanks for your reply mate. Yeah I think you are right it's got potential to rinse my pockets. I spoke to an engineering firm today who said it might be possible for someone to brass line them for about 12 quid a sleeve which actually isn't too bad. The only problem is it would require a specialist tool as the liner would be 4mm. Then on the other hand it's finding a replacement head with enough life left in it to be worth it and at a worthy price. I'm quite surprised though as it's done less than 30k and surely this can't be that common. It makes me wonder how many people have had the same issue?
     
  5. Stu675

    Stu675

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    Any symptoms? Or just from inspection?
     
  6. gleavey89

    gleavey89

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    No symptoms yet mate. The engine was initially out because my 4th gear pulled a tooth. Transmission is fixed now and and so I took the opportunity to completely inspect the engine. Bottom end is very good apart from the odd shell. The head itself isn't too bad but the exhaust valve guides have quite alot of wear. The valves aren't that bad but would benefit from a bit of lapping. The main problem is the amount of wear to the guides though. A few miles down the road I will encounter problems so I would prefer to avoid that and come up with a solution now. Saves on all the other costs that come with pulling the head ( head gaskets etc).
     
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