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  1. #1
    chuck's Avatar
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    Trying not to break a grate this year need advice

    how many people broke intake grate bolts?
    do you guys think that is a week link.


    i am going to use 5 mm longer bolts with new pump skin cause the bolts barly go into the brackets.

    thinking of going to m8 by 1.25 for grate aswell what do you guys think.
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  2. #2
    All hail the Chief! fullboogie's Avatar
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    It's not the bolts - it's the grate itself. Inspect it under a bright light every single time you ride. This has been going on for years, and the only light at the end of the tunnel is Jerry making his SS grate.

  3. #3
    Hydrotoys's Avatar
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    Quote Originally Posted by fullboogie View Post
    It's not the bolts - it's the grate itself. Inspect it under a bright light every single time you ride. This has been going on for years, and the only light at the end of the tunnel is Jerry making his SS grate.

    FULLBOOGIE FOR PRES!

    Chuck,
    I buy different size SST bolts from www.boltdepot.com . It's nice having different sizes. I have about $300 invested in the box, and about 2 years (rolling) worth of bolts, nuts, studs, washers, inserts, shims, etc... all stainless metric.The stock bolts on the gpr handling parts are trash, straight from the factory.

  4. #4
    philip_gpr's Avatar
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    thinking of going to m8 by 1.25 for grate as well what do you guys think.

    Yes

  5. #5
    Moderated
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    Quote Originally Posted by fullboogie View Post
    It's not the bolts - it's the grate itself. Inspect it under a bright light every single time you ride. This has been going on for years, and the only light at the end of the tunnel is Jerry making his SS grate.

    i think, from what i read, if i can indeed read correctly...that the accident that jd's test rider suffered last month was caused by the grate mount being pulled through the hull not the grate itself failing but more so the grate mounts and hull failing...


    just thought i would point this out although the information on the exact cause of that accident has been very vauge to say the least.

  6. #6
    Moderator OsideBill's Avatar
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    I replaced my bolts as well, I did not upgrade the size just the quality of the bolt. I like the SST allen caps myself. I replaced grate, pump shoe and ride plate. I used longer bolts on my pump shoe when I added the tunnel reinforcement.

  7. #7
    Duke's Avatar
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    I've broken 2 rear bolts using the 1200 grate. Since then I have upgraded to the larger bolts.

    My 1200 grates are early castings and must be stronger then what they are making now. The one has over 300 hrs on it with no cracks. Surely just a matter of time.

    Inspect every ride before you leave the house!!!!

  8. #8
    cheatin' piston popper addicted's Avatar
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    I plan on upgrading to ss hardwear on the shoe and grate and installing m8s for the grate as well. $15 worth of hardware. not work the risk of NOT doing it. I just hope that Jerry gets the 800 grates released so he can start on a 1200 ss grate.

  9. #9
    All hail the Chief! fullboogie's Avatar
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    You know, let me clarify. I do highly suggest that you use good bolts and replace them frequently. I just don't think it's the bolts that are causing these accidents, because I've only seen broken grates with the bolts still intact. Either way, keep your radar up!

  10. #10
    Ya Boy Trevor bajaeater's Avatar
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    i think the grates suck. ive had one break and rip out. i plan to get a new grate but ive also thought of just tapping the bolt holes out on size and going with some stronger stainless steel alan head bolts. i tapped one out and the socket wouldnt fit in the recess to allow me to tighten it so i put an alan head in it with a lock washer but the head sticks down alittle from the grate which sucks and causes a drag. so i dno what to do cause the bolts that come stock are really small in my opinion. any ideas for that

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