XR650R Thread!

Discussion in 'Thumpers' started by JustinT, Nov 24, 2008.

  1. Kai Ju

    Kai Ju Long timer

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    Take a look at some of the SV650 radiators, built for a bike not really much wider than the XR and quite short in the vertical dimension.
    Also, years ago I built a VTR1000 where I removed the side mount radiators and installed a radiator under the seat. I'm kind off leaning that direction again...
  2. Cpt. Ron

    Cpt. Ron Advrider #128

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    I just got back from a break-in ride with my BRP after doing a top-end. New intake valves (Black Diamond this time), guides, seals and piston rings. I forgot how many miles of racing, dual sporting and plain just messing around, but it's been at least 6 years since the last rebuild. The only reason for the rebuild was intake valve recession; the lash would disappear in less than 500 miles. The first rebuild I did was also due to intake valve recession (I foolishly rebuilt it with OEM intake valve back then). The bike still has the original piston and cylinder. The machinist was quite impressed considering the age and use. And I've been using an UNI air filter since day one.
    firsthere, Davethestick and LVCJT like this.
  3. Kai Ju

    Kai Ju Long timer

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    I've never heard of intake valve recession on an XR. I've got about 25,000 miles on mine and never had the top end apart.
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  4. pigjockey

    pigjockey Hognuts the T-bagger

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    Because you don't run a UNI filter. :deal
    Kai Ju and firsthere like this.
  5. squr3l

    squr3l Been here awhile

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    Putting a fresh OEM filter in now and didn’t expect it to come pre oiled but it seems like it is. I also bought maxima foam filter oil. Is the factory oil job good to go for now or is it worth re-oiling first? Thanks!
    Davethestick likes this.
  6. Davethestick

    Davethestick Been here awhile

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    Yep they come pre oiled right out of the bag. That maxima filter oil is good stuff.
    firsthere and squr3l like this.
  7. BuRPsa

    BuRPsa Finally growing up..

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    No dumb questions here.
    Any 4-stroke single with starting hickups one checks the valves first, but this (nice)bugger has a system which may, if you dunno about, throw a spanner in your wheels called "auto-decomp". Turn the crank even a little backwards and an exhaust valve will lift, so it follows you only, no, ONLY, turn the crank forward.
    Aside from that, some filters on these bikes let through 'fines', the fine dust particles i.e silicon, sand, very hard stuff. This will hammer into the valves & seats and cause wear, so a good filtering airfilter is crucial.
    In your case, if after setting the valves correctly it still struggles to start, or backfires, then do either a leaktest or compression test, this will tell you what's amiss before you open it up.
    squr3l likes this.
  8. 2dogz

    2dogz n00b

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    Sorted, bike VIN-ed applied under the alternative means of compliance, basically a letter from the local Honda dealer.
    LVCJT and GSXR like this.
  9. Gildus

    Gildus Been here awhile

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    Have been working on an air filter frame to provide an absolute edge seal in all conditions. Just got this prototype...will be installing as soon as I get a chance.


    upload_2018-4-13_19-12-7.png
    Akunin, BT4Stroke, dogsslober and 4 others like this.
  10. GBCTEXAS

    GBCTEXAS Adventurer

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    Gildus nice work keep us updated on this
  11. Gildus

    Gildus Been here awhile

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    Thx...will do
  12. BRUSHCREEK

    BRUSHCREEK Adventurer

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    Gildus where do I send my money? Very interesting idea.
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  13. Gildus

    Gildus Been here awhile

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    We have some testing to do before making them available...not sure at this point if the final version will be aluminum or stainless. I prefer aluminum but bending the mounting tabs can be problematic.
  14. 2ndA732

    2ndA732 Adventurer

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    looks great @Gildus ! Not sure if the batwing is still available, and not sure if you have the resources but if you did you could add the batwing (last time i checked didn't see it for sale on ebay anymore) as a package deal.
  15. Gildus

    Gildus Been here awhile

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    I don't see the wings on ebay either...I'll ask Aaron if he's going to make any more. I never sold them or took $ from the project, just wanted to get them made for my build and anyone else who wanted them. Same with the filter frames...been working on the project with a guy who's been doing custom XR builds for a long time now...some of you might know Manu. If not a google search on "XRManu" will bring up some of his builds. On this one you can see a different filter frame peeking through the side cover cutouts...it's purpose was to allow him to use a different side cover.

    upload_2018-4-16_21-40-36.png
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  16. squr3l

    squr3l Been here awhile

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    Finally got my bike running well and starting reliably. Must have been mostly my mistake in thinking I could troubleshoot it without an air filter in, which let me tell you the 650r does not like.
    5DBB7D73-C95D-41C2-A0A5-7F7992B0DFA8.jpeg

    Now my main question is about the clutch. It’s really difficult to pull and has a very short friction zone. Any obvious reasons the previous owner set it up like that? It would be ok wide open in the desert but not very fun in thick traffic and stop signs. I have a few photos from when I disassembled it but didn’t necessarily take closeups. Would that be extra plates, stronger springs, or something else entirely? Thanks.
    12EC6D44-31F8-47AC-BACC-FC00442B22A6.jpeg
    B0B722D5-3C3E-41FE-AFAA-FB93C2E09E1E.jpeg
  17. Gildus

    Gildus Been here awhile

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    The PO probably intalled heavy clutch springs...stock ones will give you a lighter pull.
  18. pigjockey

    pigjockey Hognuts the T-bagger

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    [​IMG]

    Squr3l your clutch disc are installed wrong. The outer friction disc is wrong see the wear marks on the clutch basket at the 12:30 and 1:30 position . The last friction should be offset from the rest of the stack.
    squr3l likes this.
  19. pigjockey

    pigjockey Hognuts the T-bagger

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    Also the first friction disc in the basket should be different from the other friction discs. The inside dia. is larger on the first friction disc.
    squr3l likes this.
  20. Gildus

    Gildus Been here awhile

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    Just heard back from Aaron...he's relisted them on ebay
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