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Type: Posts; User: Adam

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  1. Replies
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    Here it is .

    Here it is .
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    Oside Bill GP800R grate

    I have just purchased a R&D GP800R grate that originally was owned by the late OSIDEBILL. It was modified by him but never used before he passed , I have installed it ready for a water test. I must...
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    Did you seal up the oil seal flaw as per Group K ?

    Did you seal up the oil seal flaw as per Group K ?
  4. Sticky: GP1200/1300 rear crankshaft seal air leak

    Group K has posted an article about the rear crankshaft oil seals and the possibility of air leaks because of a manufacturing flaw discovered after 20 yrs of working on these engines. Take note it...
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    Update , can this be made a sticky ?

    Update , can this be made a sticky ?
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    It’s either a blocked fuel tap , blocked fuel...

    It’s either a blocked fuel tap , blocked fuel filter , or the filters under the needle and seats being blocked . Fuel pressure dropping at full throttle means the engine is using the excess fuel that...
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    GP1200/1300/800 owners urgent memo

    Just read a message from Harry Klemm of Group K fame about a design flaw that has gone unnoticed for 20 yrs in the rear crankshaft seals . Any long time owner of any of these engines will have seen...
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    Just fill the grooves with sikaflex and...

    Just fill the grooves with sikaflex and reassemble between the manifold plates with the gaskets. This will ensure NO air can pass between the carbs .
    Group K discovered this on their 1390 kits years...
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    That will work , I used sikaflex with no problems.

    That will work , I used sikaflex with no problems.
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    Filling the cross overs is essential for reliable...

    Filling the cross overs is essential for reliable service. It boosts the “signal” / vacuum in each carb .
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    Wave blaster 2 / 1200 converting

    I have just bought a Waveblaster 2 with no engine and have a 65U engine ready to install . Anyone else done this ?
    Thanks Adam
  12. Just fill the grooves with Sika flex and go .

    Just fill the grooves with Sika flex and go .
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    An 800 grate will get you past 71mph , your...

    An 800 grate will get you past 71mph , your choice but an 800 grate is still very good in the ocean .
  14. The cross over passages are under the Carb mounts...

    The cross over passages are under the Carb mounts , they allow the interchange of vacuum between intake manifolds . When they are blocked off it increases the vacuum in each carb throat ( signal...
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    Machined head 36cc domes , 1.2mm squish , Advent...

    Machined head 36cc domes , 1.2mm squish , Advent 84 curve , carbs 120 mains 110 lows 95 gram springs 1.5 needle and seat , fuel pump equalisation mod done , filled Inlet manifold cross overs , Riva...
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    View Post

    It’s probably a fuel blockage , I just went thru the same issue on a XLT1200 . Or a faulty spark plug lead , replace all three to be sure .
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    Lesson in chasing a problem

    I have 2 GP1200R’s and an XLT1200 that I bought with a damaged engine. They all have the same engines and carbs , I am very experienced with this format yet I chased an imaginary “electrical “...
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    They are still in business as far as I know , I...

    They are still in business as far as I know , I mistakenly thought they had closed down .
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    Yam 84 is best in my opinion, use good fuel and...

    Yam 84 is best in my opinion, use good fuel and you will be very happy.
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    It’s running a bit lean still ! The pistons...

    It’s running a bit lean still ! The pistons should be shiny around the outer edges ( No carbon) . This is because the piston crown is getting hot enough to burn the oil and carbonise the outer edges...
  21. Thread: GPR Advent CDI

    by Adam
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    The sticker on the side say what version you have...

    The sticker on the side say what version you have . Advent have the curves for the different versions on their website.
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    What sticker is on the side of it ? You can tell...

    What sticker is on the side of it ? You can tell what curves it was programmed with on the Advent web site . I have just purchased another 1290 CDI too for my second GP1200R , I too will check which...
  23. Your starter maybe worn out !

    Your starter maybe worn out !
  24. Has anyone else noticed how hard it is to buy GPR...

    Has anyone else noticed how hard it is to buy GPR scoop grates and ride plates since the Covid 19 pandemic ?
  25. All the 1200’s are the same . Only the GPR’s...

    All the 1200’s are the same . Only the GPR’s changed with the 1300 engine.
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