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street legal 2-strokes

  1. #601
    Day late, dollar short carsick's Avatar
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    Re: street legal 2-strokes


    Quote Originally Posted by nhbubba View Post
    And only one of each? Amateur..
    I know, right?

    [IMG][/IMG]

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    99 + 02 SV650 ex-race - 91 FJ1200 street - 05 YZ450F ice - 03 KDX220R woods - 00 WR400 MOTARD!

  2. #602
    Lifer Imbeek's Avatar
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    Re: street legal 2-strokes

    The underside of those front fenders look yucky. Did you not instruct one of the servants to wash them for the photo?

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  3. #603
    Super Moderator TheIglu's Avatar
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    Re: street legal 2-strokes

    5 bikes, 4 front wheels?

    Something seems amiss.

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    -Clayton
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  4. #604

    Re: street legal 2-strokes

    The last bike tho

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  5. #605
    Day late, dollar short carsick's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by Imbeek View Post
    The underside of those front fenders look yucky. Did you not instruct one of the servants to wash them for the photo?
    I thought the snow did a fine job after leaving them out all winter.

    Quote Originally Posted by TheIglu View Post
    5 bikes, 4 front wheels? Something seems amiss.
    Only 4 motors too. There's 8 wheels with tires on the rack.

    Quote Originally Posted by breakdirt916 View Post
    The last bike tho
    Green with envy I see.

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    99 + 02 SV650 ex-race - 91 FJ1200 street - 05 YZ450F ice - 03 KDX220R woods - 00 WR400 MOTARD!

  6. #606

    Re: street legal 2-strokes

    Good news: cylinder is almost done and shipping tomorrow!

    Bad news: checked the invoice before calling back w' my CC info, and it's just a cylinder re-plate/repair - no porting!!

    I remember very clearly putting that on my order form, so I talked to the tech to see if they could change it before shipping, but he said it's pretty much done and too late...ugh. I really, really wanted a ported cylinder

    so I will likely just send off one of the other cylinders so that I can just run whatever my heart desires. Seems most of the work so get done (forks, engine rebuild) has some sort of hiccup, so I am getting used to it

    Just bought a piston/gasket kit - $138 + tax/shipping = $162. So top end (including cylinder replate/repair) is just under $500 for parts; and definitely re-pairable at home. Just need to replace mine before they blow up and just do the piston annually, and maybe cylinder every 5 years.

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    Last edited by breakdirt916; 05-16-17 at 06:14 PM.
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  7. #607

    Re: street legal 2-strokes



    hot baby mama

    my take on the cylinder:
    -holy crap clean AF
    -they don't just re-plate the inside, it looks like they powder coat or paint(ish) the outside
    -the inside looks nice...super cleaned up and nicely prepped with clean cross hatching

    -going to re-use the box/packaging to mail back another cylinder for porting

    still on the fence about running this "stock" cylinder or just having it as a backup and waiting for a ported one...gotta do my shock and wait 3 weeks for the bottom end to get done anyhow

    also @Kurlon/whomever

    the instructions that shipped with the cylinder said "run the threads with a tap"

    1.) so...seriously? I should run a tap through all the cylinder head stud threads? can't I just gingerly put in a bolt?

    2.) and any idea how much it's worth if I just fleabay this thing? I got it from eBay for $101 and paid $302 repaired and shipped. So $403 is a break even but frees up funds to repair and port the other cylinder

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    Last edited by breakdirt916; 05-23-17 at 02:04 AM.
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  8. #608
    Lifer Kurlon's Avatar
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    Re: street legal 2-strokes

    Your cylinder wasn't repainted, it was chemically stripped and etched, then hit with a resist for the final nikasil lining stage. Yes, run a tap lightly through the cylinder stud threads to clean up any cruft that built up in them. I also use a touch of neversieze on the studs when reinstalling.

    You can try eBaying it but I don't think you'll get your costs back. Worth a shot though. Or, run it, it's not like it ran bad with stock porting right?

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  9. #609
    Backwoods lobster boy number9's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by breakdirt916 View Post
    the instructions that shipped with the cylinder said "run the threads with a tap"

    1.) so...seriously? I should run a tap through all the cylinder head stud threads? can't I just gingerly put in a bolt?
    I would use a thread-cleaning tap (aka thread-chasing tap) and not a regular thread-cutting tap.

    Here is an example of what I mean, it's from ARP so it's big money but there are loads of inexpensive options out there.

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    '00 Honda VFR 800, '01 Subaru Outback, '03 Porsche 911, '05 KTM 300 EXC, '08 Ducati Hypermotard 1100S, '14 Honda CRF 250R

  10. #610

    Re: street legal 2-strokes

    ran fine with stock porting, but I'm adding the WR transmission, so I'd like to adjust the power delivery of the cylinder to better match it...plus I do quite a bit more street/desert/trail riding than MX

    k, will clean up the threads before putting in cylinder studs

    I threw a post on TT to see what it's worth...but at the risk of losing a lot of money on it, I may just keep it for later

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  11. #611
    Lifer typeone's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by breakdirt916 View Post
    ...plus I do quite a bit more street/desert/
    keep it

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    Beta 250RR

  12. #612
    Backwoods lobster boy number9's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by Kurlon View Post
    Your cylinder wasn't repainted, it was chemically stripped and etched, then hit with a resist for the final nikasil lining stage. Yes, run a tap lightly through the cylinder stud threads to clean up any cruft that built up in them. I also use a touch of neversieze on the studs when reinstalling.
    I wish more people used anti-seize when putting things together. Especially when they're subjected to harsh operating conditions!

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    '00 Honda VFR 800, '01 Subaru Outback, '03 Porsche 911, '05 KTM 300 EXC, '08 Ducati Hypermotard 1100S, '14 Honda CRF 250R

  13. #613

    Re: street legal 2-strokes

    just thought of something - the "B" motor has a clean/working crank - I may just put this top end on the other motor, move the lighting coil, then drop off the "A" motor with gears at the shop for the rebuild and swap...on a leisurely time schedule (cuz don't most shops always need a month or so extra time anyways?)

    that way I can get to riding sooner...then just throw in the wide ratio bottom end/tranny later this season



    eek...I have a tap and die kit but I don't want to cut the threads if I don't line it up correctly

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    Last edited by breakdirt916; 05-24-17 at 02:15 PM.
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  14. #614
    Lifer Kurlon's Avatar
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    Re: street legal 2-strokes

    When you run the tap in, be gentle and go slow. You'll be able to feel if you're off and cutting instead of just knocking the grit out. If it takes any force STOP.

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