Vintage Dirt Racing on a 350 Honda Twin

Discussion in 'Racing' started by LC Garage, Jun 16, 2011.

  1. LC Garage

    LC Garage On Any Sunday

    Joined:
    Mar 18, 2011
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    777
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    "Why the hell don't you have that thing running yet?? We've got bills to pay!!"

    yes boss! :lol3
  2. jgas

    jgas Stoogely Adventurerer

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    Oddometer:
    843
    Been looking for one of these. I have too many projects as is, but when I find one cheap it's mine.. The first 4st dirt bike I ever rode was this bike. My stepfather had one and I started riding it when I was 12. He made the mistake of telling me I could ride it when I could kickstart it knowing that it was hard to start when cold and I was skinny. He didn't know I'd been watching him to figure out the 4 stroke starting drill for that bike for a year, just biding my time.... I waited until a warm day, pulled it out into the sun, took an old kerosene heater and a fan from the house to blow the heat onto it, pulled back one carb boot and sprayed in some Ether, and 30 min later after adding duct tape to the kick lever which had lost the rubber boot, using Ether in both carbs, stopping for a snack, setting the points, adding fresh gas, finding more Ether, swapping my work boots for some of his which had harder soles, my foot was killing me, I got it started.

    I got it warmed up, waited until I saw him turn into the driveway, and quickly re started it. When he walked around the house I was just pulling on my helmet. Oh, he was pissed! I reminded him of his "start it if you can, you scrawny runt deal", (as I thought of it). He didn't know whether to laugh, get mad, or what but he said take off. I rode that bike for 5 years until I blew it up pulling other kids up a hill in the snow after we slid down on an old car hood. I thought step dad Bob would be pissed I blew it up. He just said he couldn't beleive it lasted that long with me riding it.

    After I blew it up, he gave it to me. I sold it for gas money in high school. Regretted it ever since. Damn girl I was messing with so I needed the gas money to woo her sorry butt never did give me a ride. She didn't even care when I told her I sold a motorcycle for her! Tried to buy that bike back, the guy I sold it to never fixed it, never rode it, wouldn't sell it back to me. Eventually he just robbed parts off of it.

    Yep, I gotta have another one. Too many memories. No bike I have ever heard sounded just l ike that old twin. No mufflers, straight pipes right under the frame. It blew flames out of the exhaust on decel. I thought it was the coolest machine ever made.
  3. oregoncoast

    oregoncoast Racing Like a Noob

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    Duh!
    This one is for sale....in case you're wondering :deal
  4. LC Garage

    LC Garage On Any Sunday

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    Jgas, loved your story, very funny and a good read! :clap

    This bike is for sale, we are fixing it up to help pay towards the OSR Team's 2012 Mexican 1000 effort. The bike should be running and ready to sell in the next week to ten days, just waiting to get the carbs back from a bike that is at another shop. Are you interested?
  5. Irish1

    Irish1 Been here awhile

    Joined:
    Jul 20, 2006
    Oddometer:
    490
    Location:
    Paradise,CA
    So HOW much, and could I ride it all the way back to Monterey, CA after handing you some moolah? That would be hard on my banged-up geezer body, but of such courageous acts are legends made.

  6. LC Garage

    LC Garage On Any Sunday

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    Irish,

    For an ADV'er we were thinking about 700 non ADV more like 800. Monterey seems pretty ambitious for a bike that hasn't been tagged since '83, but not saying it couldn't do it. I guess it also depends on your wrenching ability, as long as you can do minor repairs as needed and weren't in a big hurry it might be feasible.

  7. drdubb

    drdubb OFWG

    Joined:
    Dec 13, 2009
    Oddometer:
    476
    Location:
    Raleigh, North Carolina
    Jacking your thread a little....
    Started my K1 for the first time today. Still lots to do, but she runs.

    [​IMG]

    Finished up the first phase of the restoring of Little Blue. Tried the first start up today and she cranked on the third kick. I still need to adjust the valves, timing, points, cam chain, but she ran!!

    So far I've:

    replaced the fork seals
    cleaned and rebuilt the carbs
    fabbed a mount for the rectifier
    cleaned up the wiring, replaced some connections
    fixed the tail light, replaced the lens, soldered a ground wire
    rebuilt switch housings, painted same and mounted on K-2 bars
    replaced foot pegs, lever perches and levers, hand grips
    replaced air filter housings, boots and filters
    replaced the main switch
    replaced various fasteners

    Need to:
    fab exhaust pipes w/slip on can
    lots of polishing
    replace tires and rim locks
    clean out the Kreme in the gas tank
    replace rusty spokes
    get her inspected and plated. She qualifies for an Antique plate and that's what I'm going to get.

    Short vids of the start up.

    http://www.youtube.com/watch?v=vZRpUy8SDPY

    http://www.youtube.com/watch?v=bg9s6Zzzri4
  8. oregoncoast

    oregoncoast Racing Like a Noob

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    Duh!
    Looks great!
  9. LC Garage

    LC Garage On Any Sunday

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    Dale,

    That is one gorgeous machine you have there, well done and thanks for sharing!

    Please post here any time, you and any other folks that want to chime in and share are more than welcome.

    Rick

  10. LC Garage

    LC Garage On Any Sunday

    Joined:
    Mar 18, 2011
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    Friday morning I went to pick up my 350 twin race bike from the exhaust shop, where she's been for the last month. When I called to let the guy know I would be in to get it, he said he had only made the tt pipes but was not comfortable or prepared to cut my stock pipes fearing he would get it wrong. So I said ok, that's fine, I understand. When I get to his shop, he met me at the door and said I've got some bad news.......seems as he was getting ready for me to arrive he had piled my parts up and then opened the shop door and drove the tow truck over the parts. Really. @#$$%%^&*(*&!!!!! One of the stock pipes had gotten flattened and one of the new TT pipes was pretty dinged up, but that was about the extent of the damage. He made another TT pipe while I loaded up and kept telling me how sorry he was. Believe it or not, I did not get mad, he was so sorry it was hard to be mad. He didn't charge me for anything and offered to pay for the flattened pipe, I just said it's ok, we've got spares. Anyway, enough about that, on to other things.

    Tomorrow morning we are headed to the coast to get some riding time in on one of Luke's single track areas. I'm sure the young bucks are going to give the old guy a hard time but I'll do my best to keep up! When we get done riding, we will head over to Lonnie's to do some work on Paul's Baja racer, and I've got quite a few parts and pieces for the project already loaded up and ready to go. I will write a more detailed report of our riding adventure and shop progress on Monday morning.
  11. LC Garage

    LC Garage On Any Sunday

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    Paul (Oregon Coast) will soon be starting a new 2012 Mexican 1000 thread, so this will be my last major post here regarding Outta Sight Racing and Baja prep, I will continue to post my own projects and race efforts, but we want to keep the bulk of the Baja related material in one location.

    Had a great ride yesterday with 3/4 of the OSR riders (sorry Paul Jr. was not there!) ~ Paul Sr., Luke and myself rode in the Tillamook forest on a gorgeous clear/cold day. This was meant to be a training ride and were all on our "modern" bikes. Paul & Luke took it easy at first and when I was able to handle the easier stuff decided to go to a particularly difficult hill. Just getting up the approach of this hill was a challenge and Paul & Luke had to give an assist when I was hung up on a rocky slope. When we hit the main hill, it took three tries before I finally made it, boy was I tired, happy and relieved! Later when we were descending another particularly steep and rocky trail and were stopping for some riders coming up, I used a little too much front brake and had a good view of my mx boots going over my head in the clear blue sky! Because I wear every type of riding protection possible, nothing was wounded except my pride. In three hours we only covered 17 miles, mostly because they had to stop and wait for me. All in all a good ride and a starting point for honing skills and developing conditioning.

    OSR Riders V.75 ~ After the ride ~ old guy on the right has been rode hard and put away wet!

    [​IMG]

    Our gracious shop host Lonnie;

    [​IMG]

    Master welder Ray;

    [​IMG]

    Ray mocking up the shocks (pre-loaded length) with rigid struts. Luke is the mathemetician behind all of our chassis geometry, the rest of us chime in with all of our opinions and Luke sifts thru those for anything useful;

    [​IMG]

    Once the struts were in place, we set in a spare motor (for weight) and added the seat, fuel tank and anything else that would help Luke make reasonably accurate assumptions when ordering the new shocks and springs;

    [​IMG]

    The end of a long and productive day, note the care and concern our fearless leader (Paul) shows for the irreplaceable Ray;

    [​IMG]

    Stay tuned for much much more. The scrambler should be finished within the next week and I plan to start the rework of my "barn fresh" twin into something resembling Paul's ultra clean Baja racer. :evil







    Our gracious shop host Lonnie;
  12. Konflict Motorsports

    Konflict Motorsports KM TUNER

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    894
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    Redmond, Wa-Thousand Oaks Ca.
    Looking good guys!
  13. oregoncoast

    oregoncoast Racing Like a Noob

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    Yep...seriously thinking of running Baja with those struts instead of shocks. Baja hardtail style...beat that! :1drink
  14. Kootenai Rider

    Kootenai Rider Displaced Adventurer

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    Nov 2, 2008
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    2,274
    Location:
    Hong Kong for now. Idaho before and later
    Hey LC,
    I used vinegar to clean rust out of a CL100 tank. That worked like a charm. Got every bit of rust out after a few days of sitting....
  15. LC Garage

    LC Garage On Any Sunday

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    Cool, maybe I'll do a quick follow up on the CL350 tank and make sure all that the coke left behind was indeed the stained liner. If the vinegar works that well, that could become the "go-to"! Thanks!

  16. LC Garage

    LC Garage On Any Sunday

    Joined:
    Mar 18, 2011
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    Columbia County
    So the title pretty much sums up the weekend, including this morning's effort to post on ADV. I had written a long and detailed story regarding the weekend's failed efforts to make the Scrambler run, but when finished the post, including pictures, just disappeared. Sheesh. So here is an abbreviated version;

    Saturday installed complete fuel system from race bike, reasoning it had ran only a month ago, it was the "sure thing" to get the Scrambler started;

    [​IMG]

    Despite very careful efforts at setting valves and ignition, the best I could get on Saturday was a large backfire out of the carbs. Tried reversing the points advance cam, but that only changed the point at which the backfire occurred.

    Sunday morning, cold and snowy, heading out to shop;

    [​IMG]

    It was bit chilly inside as well;

    [​IMG]

    Built a fire and started the heater buddy, then went to work. I will save you all the gory details until later, suffice it to say I started at square one, taking the top end apart as far as possible while still in the frame;

    [​IMG]

    ...and checking the cam installation against the Clymer manual and also comparing with the sage advice of Paul's Honda Master Mechanic Gary. It seems to be installed correctly;

    [​IMG]

    Cam pin is up and sprocket correctly aligned. Problem must somehow be in the advance unit. I tried several different ways of timing and advancing and double checking that the bike was on the TDC of the FIRING stroke, but the only progress really made is it no longer backfires, still wont start. During times of contemplation I did adjust the rear chain & rear brakes, installed the muffler, hooked up the clutch and jury rigged the electric starter. All good things.

    Since I have today off, am headed out shortly to have another go at it, wish me luck! :D
  17. LC Garage

    LC Garage On Any Sunday

    Joined:
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    Columbia County
    As they say, the devil is in the details. Started out the morning going back over all of the basics, looking for that one detail that had been missed. I decided to make one small test to verify the ignition was actually firing at the precise moment the timing mark was reached. I did that by removing the plugs, snapping them into their boots and putting them against the cylinder head, then taking my 14mm box wrench on the rotor bolt and gently rolling the engine thru the firing marks with the ignition on. So I began this process and as the rotor passed thru the LF mark, no spark!!!! WTF? So I continued to roll it over as I wanted to see at what point the Left plug WOULD fire. Oddly enough, as I continued to roll it thru and then reached the RF mark (it is simply marked as an F on the rotor) and then it fired. Suddenly it dawned on me. I had thought the coil was hanging somewhat lower than normal and had not realized that someone, at some point, had relocated the coil on the bottom of the frame brace and at that time REVERSED the plug wires. It looked so much like normal that I, like others before me, had missed this small detail. Doh!!!!!!!

    Needless to say, I was pretty happy to make this discovery, and as soon as the wires were reversed, it immediately started!

    It ran a little ratty at idle and seemed to be running only on the LH cylinder unless revved up, so I took the bowl off and found a dirty idle jet. Cleaned the jet, reassembled, and it was tiny bit better, but still not right. As it was running, I stuck my finger in the carb throat to feel the vacuum slide, on the LH it was moving freely with the engine load, but the RH was stuck in the up position. I can only surmise it was popped upward during one of the backfires. After pulling the carb top off and freeing the slide, it ran much better and idled smoothly.

    To say this made my day would be an understatement. This afternoon I plan to tidy up the wiring and controls, soak the stock Scrambler fuel tank with vinegar for a final cleaning and generally start putting things back together and make it at least somewhat ride-able. Stay tuned for a ride report!
  18. Ladybug0048

    Ladybug0048 Bug Sister

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    Spokane Valley, WA (the dry side of the mountains)
    Wahoooo way to go Rick. :clap
  19. oregoncoast

    oregoncoast Racing Like a Noob

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    Nicely done, Rick. Very nice! That motor has probably not been started in 20 years or more because of that...as it was last registered in 1983! :eek1


    Now, someone needs to buy a nice, running, 1973 Honda CL Scrambler project with a clean Oregon title!!
  20. awshouse

    awshouse Downwardly mobile

    Joined:
    Jun 4, 2009
    Oddometer:
    442
    Location:
    Seattle
    Now I've read your whole damn thread and the 1000 thread and you guys are making me want to make a bad decision. OC replied to my thread looking for folks who know these bikes as I want to get my father one to work on when he retires this summer. After reading this I really, really want one for me too! I just know I can't... my tiny urban garage has 4 bikes in it and I'm currently scheming on a tear down/rebuild of the garage... so too many things in the air. But I'm really excited to see what you guys are up to and I so appreciate you taking the time to share. Sooner or later we'll have one or two DLs or SLs to play with too.

    Anyway-- great stuff. Thanks and keep having fun.

    Andy