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Type: Posts; User: Luke1.8

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  1. Replies
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    Have you checked the lashings gaps? if both the...

    Have you checked the lashings gaps?
    if both the timing marks are lining up, check to make sure the engine is also at top dead centre https://youtu.be/RjTKJA9Ws94
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    Step 1. Get the stock tune put back in. Step 2....

    Step 1. Get the stock tune put back in.
    Step 2. return for warranty!
  3. Are you going to put a 19lb or bigger wheel in...

    Are you going to put a 19lb or bigger wheel in it? I had the same attitude towards the ribbon delete until I noticed no difference between having it in or out. I have spoke to a few guys who have...
  4. I would personally put the ribbon back in, it is...

    I would personally put the ribbon back in, it is your last line in defense at stopping something going through your engine.
    The risk vs reward is not worth it. Throttle body flange after market air...
  5. Replies
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    2,530

    Hey Mate, Thats the oil feed for the chain...

    Hey Mate,

    Thats the oil feed for the chain tensioner on the inlet manifold at the front of the engine.
    The crack runs horizontal all the way around that point and if you look at the other photos...
  6. Replies
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    Thought I would close my chapter on this thread...

    Thought I would close my chapter on this thread (for now)

    I have finally got the GP 1800 repaired and winning motos. Its now fitted with head number 4 and going great.

    I went down the path of...
  7. Replies
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    Its a hairline around this area, It cant be seen...

    Its a hairline around this area, It cant be seen just by looking at it but the oil flows freely when running at Idle.
    https://i.imgur.com/LUuGd6X.jpg

    I will pressure test this under 10 hour head...
  8. Replies
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    The last photos I posted didnt show the damage...

    The last photos I posted didnt show the damage that well and I was in a bit of a rush when I posted them.
    I had the chance to get some decent photos over the weekend that shows what happens when you...
  9. Replies
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    So I pulled the head off and the Oil pressure...

    So I pulled the head off and the Oil pressure regulator and found the following issues.

    The head as expected has a nice crack near the cam chain oil tensioner feed point, Thats a solid area for a...
  10. Replies
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    2,530

    I was aware that people have attempted to weld...

    I was aware that people have attempted to weld the cracks just end up chasing the cracks due to the material make up of the heads and how they react to extreme heat caused through welding.

    I could...
  11. Replies
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    Hey Mate, The original head was never touched...

    Hey Mate,

    The original head was never touched or removed up until the 54 hour point.
    The location of the crack is isolated from stress points associated with incorrect torquing down of the head....
  12. Replies
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    GP1800/SVHO Head Cracks

    HI Guys,

    There is a few threads on this already but Yamaha have inspired me to consolidate the issue and make sure that the wider community is aware that the SVHO engine has a confirmed issue with...
  13. Replies
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    My second appeal for warranty was denied but I'm...

    My second appeal for warranty was denied but I'm going to give Yamaha Australia one last chance to do the right thing before I post what's actually causing the issue as admitted by the dealer today.
  14. Replies
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    Quick up date, the head was replaced under...

    Quick up date, the head was replaced under warranty.
    It lasted 6 hours before I noticed oil again and found it had cracked in the same spot. Warranty was denied but I have appealed as the ski has...
  15. Replies
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    Mine must have been from the same...

    Mine must have been from the same batch.https://photos.google.com/photo/AF1QipPLmPl0PZTkWpm-qd0c7gRF-5GxMU6ZXKh5Z7ZYhttps://photos.google.com/photo/AF1QipPLmPl0PZTkWpm-qd0c7gRF-5GxMU6ZXKh5Z7ZY
    ...
  16. https://photos.google.com/photo/AF1QipO8_rLx1VuiyQ...

    https://photos.google.com/photo/AF1QipO8_rLx1VuiyQOyA5lyUMEzHKAfbGXucD9wZ1wQhttps://photos.google.com/photo/AF1QipO8_rLx1VuiyQOyA5lyUMEzHKAfbGXucD9wZ1wQI started to notice small amounts of residue...
  17. Replies
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    GP1800 Stage 1 ski with 13/18 solas. I started...

    GP1800 Stage 1 ski with 13/18 solas.

    I started off with the stock intake grate which pulled really hard through acceleration but would let go in the chop.
    I then installed the Worx intake with a...
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