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street legal 2-strokes

  1. #626

    Re: street legal 2-strokes


    Just dropped off WR transmission to the shop...they said they'd start it "in the next couple days"

    Short of splitting the cases myself and bringing cleaned up case halves with the crankshaft out ready for a rebuild like, I am not sure what else I can do to make it easier for the work to get done...they originally said 2-3 weeks from the time I dropped it off, but that usually means they start it 1-2 weeks later and takes an extra 1-2 weeks to finish it

    Here's to hoping they can get it done within 1 month and be done by November 4th weekend for a shake down run...

    In the mean time I will get the rest worked on short of the motor

    But honestly I am losing a little steam for upgrades...$400 shock + $500 ported cylinder + $200 Baja designs LED headlamp is kind of "meh" to me...Kinda just want a solid bottom end for sure, use my good top end, fresh chain/sprockets/brakes with everything working properly, and maybe budget the shock and ported cylinder next year

    Let me get a running bike first. Let's start going on rides as I save up for mods. Already getting a WR gearbox so it will already feel like a new bike

    Also the landwhale bearings got me thinking about about maybe R&R all the bearings on the YZ as well. Next year.

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    Last edited by breakdirt916; 10-02-17 at 06:28 PM.
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  2. #627

    Re: street legal 2-strokes

    got a call from the shop yesterday!

    they finally got around to splitting the cases and taking a look inside:
    -minus the crank/bearings/debris - everything on the inside looked good. Cases are saved!
    -the WR transmission parts appear to be in good shape as well - hopefully we have all the parts we need to drop them in
    -the crankshaft does need to be mailed out for a rebuild (pretty sure last mechanic said they're unavailable anyways)

    their estimated turn around is roughly 2 more weeks...so bike *may* be done by the November 4th weekend for a shakedown run

    bad news is my work schedule may not accommodate for me to get the whole weekend off...I may only do LAB2V day one...LA-> barstow

    on the other hand, I'm spending WAY less doing this my way right now. I saved $500ish by dropping off the bottom end out of the bike for a rebuild and I will save another $400 just by doing day 1 (day 2 is $150 but then add Vegas hotel + gas)

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  3. #628

    Re: street legal 2-strokes

    Got a call from the shop

    BOTTOM END IS DONE AND BACK TOGETHER!!

    He also said the WR transmission went in without any issues!

    I am going to pick it up tomorrow!!

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  4. #629

    Re: street legal 2-strokes



    Wicked pissa!

    Oh baby I want to spend the rest of the day just doing this and only this

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  5. #630
    Lifer Kurlon's Avatar
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    Re: street legal 2-strokes

    Do you want a spare set of 92 forks with brake master/line/caliper?

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  6. #631

    Re: street legal 2-strokes

    very cool opportunity!

    no thank you...I already have a spare set of forks

    next big purchase will be rear shock re-valve...then ported/madness cylinder

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  7. #632

    Re: street legal 2-strokes

    ruh-roh...working a lot (and partying the other days LOL) means I only have 1 day off to work on bike before my planned shakedown weekend!

    edit: well, had to bail out a friend in the AM, picked up the regulator for the vstrom late, tested it and found it wasn't the regulator, and no time on the yz today. sucks....maybe I can finish everything Saturday and go ride Sunday?

    Edit 2: I got asked to pickup a shift Saturday. Been working 6 day work weeks for 4 weeks now!

    Edit 3: I only have 4 full days off between now a LA-B2V...one full day is committed to fixing the stator/RR/brake pads/bleed the vstrom...so really I have 3 days...eek...I am seriously considering not riding, and just help move people/bikes around.

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    Last edited by breakdirt916; 11-01-17 at 03:54 PM.
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  8. #633

    Re: street legal 2-strokes



    well, well, well...finally got to spend some time on the bike

    took me a good hour to swap the exhaust valve parts between cylinders

    could not figure out how the damn thing was supposed to come out...service manual just said "remove bolt, remove assembly". After you take out a screw, the two halves just push out from each side. A rubber o-ring on the right side was blocking it from coming out, but you just gotta push it. Assembly into the other cylinder was also pretty nervous as I wasn't sure how close the tolerances were between cylinders for it to work. New seals/o-rings installed with a little oil on the parts and they move smoothly without touching the piston. I cleaned the parts the best I could with WD40 and a rag, but there was some carbon build up that looks permanent from when it overheated.

    this exhaust valve was quite different from the RM125 - there was no spring tension that you can wind. It didn't slide up and down; it just rotated on an axle to open and close. It also didn't have nearly as much collection of spooge as the RM collected...so "cleaning" the parts wouldn't help it with sticking when it's cold...just gotta let the bike warm up. I kinda like it that way since one less thing to clean from a maintenance standpoint.



    now came the dreaded part - wrestling the motor back into the bike.

    To my surprise, it was *so* easy; like less than a minute to get into the frame, and another 5-10 mins to line up the swingarm bolt with the motor and swingarm. I remember wrestling the XR100R and RM125 motors for almost an hour because you had to get the perfect angle to get the motors in. No such issue with this bike...so the bottom end is now back in the bike.

    the WR swingarm, however is a bit different than the yz...as I understand it has a different chain adjuster, so I've got a few more parts to buy.

    I wanted to try the old reed valves first to see how different it was from the boyesen rad valve, but there was just so much debris from the piston explosion that I didn't want to chance anything getting into the new cylinder. Rad valve will go straight on.

    next stops: piston/cylinder back on, new air filter, refill transmission oil/coolant and she should fire up. I will also do the chain/sprockets...dropping down from 55-60 to 33 hours next week so I will have a good amount of time to work on it...still need a rear tire too at a minimum to do LAB2V...so it may be cutting it a little close because I'd need at least a couple shake down runs to make sure the bike is 100%

    almost there!

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    Last edited by breakdirt916; 11-06-17 at 10:26 AM.
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  9. #634

    Re: street legal 2-strokes

    had a tricky time getting in the piston circlip...flathead screwdriver for me



    could not get a torque wrench in, so torqued the back nuts, "felt" the tightness, and manually tightened the front



    ordered a new/used cylinder to replace the previous head...had a lot of overheated debris melted to the dome



    I also made very careful not to improperly seat the cylinder head gasket to prevent the pinch/leak issue I had the first time around



    went straight to the Rad valve instead of re-using the oem valves/cage

    note that it has no cage/stop plates...per EG's 2-stroke rebuilding guide, the Rad valve doesn't block the boost ports in the cylinder and better delivers fuel with the offset intake that single shock bikes have



    I also stretched the coiling of the throttle cable once when I tried to spin the carb to swap jets. This resulted in a "longer" sheath, "hanging" rpm's, and occasionally high idle. For a long desert ride and $10 for a cable, I best swap it.



    ugh...so close, and so dark...



    just need to torque the engine bolts, re-pack the muffler, mount the exhaust, put on the gas tank/plastics, swap the chain and sprockets, re-fill the radiator fluid/transmission fluid, and she should be ready to fire up. Will still need a rear tire and long-ride setup for LAB2V...still 50/50 about doing the ride. they need volunteers in the morning to load roll charts and be in the parking lot...plus a handful of LA guys/out-of-towners need a ride from the LA area to Palmdale (couple hours) the night before, or a ride back from Vegas if they're dropping off their truck.

    Going to feel like a totally different bike with the re-plated cylinder, RAD Valve, and WR transmission...can't wait!

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    Last edited by breakdirt916; 11-08-17 at 11:36 PM.
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  10. #635

    Re: street legal 2-strokes

    engine mounts tightened/torqued, radiator hoses re-attached, mid-pipe and muffler mounted (not re-packed yet though), gas tank/plastics re-assembled, and I'm SO CLOSE TO FINISHING AHHHH!!!!

    this time around - I took special care to make sure everything went back together properly

    1.) the engine blew up because the mid-pipe wiggled up against a radiator hose clamp until it came off; dumping all my coolant.

    rotated the radiator hose clamp away from the mid-pope



    according the micro-fiche, there should be a bracket here holding the mid-pipe in place. The mechanic that did my first re-build never returned this part to me, so I never knew it was supposed to go in, and this also could likely contribute to a wobbly mid-pipe.



    I always fear on older bikes that these bike-specific parts are no longer available. Luckily there were in stock at rockymountain ATV

    Ordered.

    went to measure/fill/dump the radiator fluid and did not have a measuring cup. Went to autozone, and neither did they . Just tried to eye ball it until it was full, then let it burp, and top off, but then saw fluid pissing through the engine onto the ground.



    bingo - so when the bike blew up, I often saw smoke huffing up from the middle/front of the bike. I knew the radiator overflow tube on the bottom of the bike, so I got super nervous about not knowing where this mystery smoke was coming from. In the middle of the mojave desert, I didn't have a chance to inspect it on the ride, so I'm glad I found this.



    Green check on rockymountainatv. ordered up.

    Otherwise, I'll fill up the transmission fluid tonight, mount the chain and sprockets, put an LED light back on the headlight and just wait for parts.

    other parts needed:
    -spare shift lever
    -exhaust midpipe tension springs
    -front brake pads
    -rear turn signals - they were destroyed...so I chopped these off when I took them out
    -rear brake return spring

    I'm about 70% sure that they won't come in time for a shakedown run...and I don't want my first ride to be LA-Barstow

    It needs quite a few items anyways - new rear tire with UHD tube...muffler re-packed...acerbis fender brace...the Moose enduro toolkit on the rear fender...chain adjuster for WR swingarm (plus swap). Vstrom needs front/rear tires + grip heaters...and I only have 1 day off between now and the ride. too much.

    still getting closer! can't wait!


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    Last edited by breakdirt916; 11-14-17 at 08:40 PM.
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  11. #636
    Backwoods lobster boy number9's Avatar
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    Re: street legal 2-strokes

    Have you thought about getting something like this radiator cap with built-in gauge?



    It might save your bacon the 2nd time around. Link.

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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

  12. #637

    Re: street legal 2-strokes

    I was wondering why nobody had invented anything like that before...then I saw it on RMatv and ordered it

    not sure why I haven't setup a direct deposit to Tusk yet

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  13. #638
    Backwoods lobster boy number9's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by breakdirt916 View Post
    I was wondering why nobody had invented anything like that before...then I saw it on RMatv and ordered it

    not sure why I haven't setup a direct deposit to Tusk yet
    I have one on the KTM, it works pretty well. I haven't bothered on the Honda, though.

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  14. #639
    Soul Rider Paul_E_D's Avatar
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    Re: street legal 2-strokes

    Breakdirt. It's official. You are a competent 2 stroke maintainer/mechanic. Congrats

    Sent from my SM-G930V using Tapatalk

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    Paul_E_D


  15. #640

    Re: street legal 2-strokes

    SHHHH!!!

    the moto Gods have not made a final decision on whether or not to strike down this project through fire and brimstone explosion

    otherwise, $20 for 1 day shipping for RMATV?



    F-yeah!

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  16. #641
    Lifer typeone's Avatar
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    Re: street legal 2-strokes

    i was about to purchase that rad cap last season but couldn't cope with the range of typefaces that Tusk chose to use. had to remove from cart.

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  17. #642
    Lifer loudbeard's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by typeone View Post
    i was about to purchase that rad cap last season but couldn't cope with the range of typefaces that Tusk chose to use. had to remove from cart.
    I feel like there's a Comic Sans joke in here somewhere....

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    I went to MMI I know what Im doing here chief

  18. #643
    Lifer typeone's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by loudbeard View Post
    I feel like there's a Comic Sans joke in here somewhere....
    Papyrus

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  19. #644
    Backwoods lobster boy number9's Avatar
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    Re: street legal 2-strokes

    Quote Originally Posted by typeone View Post
    i was about to purchase that rad cap last season but couldn't cope with the range of typefaces that Tusk chose to use. had to remove from cart.
    You know you're a designer when...

    Quote Originally Posted by typeone View Post
    I knew you'd like that.

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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

  20. #645

    Re: street legal 2-strokes

    (I will re-size and post pics when I get home)

    Didn't work until noon, so I rode over on the Vstrom and had the rear tire swapped....the old UHD tube was stretched out or warped...held air funny.

    Tire mounted I ran home to mount the sprocket....to find out it was for an FZR

    Was hoping to ride right after surfing and going to IMS...looks like the rest of the afternoon will be wrenching

    I should really replace the sprocket bolts anyways...one has a warped Allan key side

    SENT ANOTHER ORDER AAAGHHHHH

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    Last edited by breakdirt916; Yesterday at 09:18 PM.
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