Important Harley twin cam info

Discussion in 'Road Warriors' started by YOUNZ, Nov 14, 2012.

  1. HapHazard

    HapHazard Waiting for Gudenov

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    After watching the video,I spent some quality time with the shop manual. I think I'll take a look at the tensioners, at least.
  2. DAKEZ

    DAKEZ Long timer

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    Please be a man of your word!

    Even though you are an ignorant fool on this matter. :1drink

    Hope you had a Great Give Thanks Day. :beer
  3. Gas Hog

    Gas Hog Two Wheel Fanatic

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    Wow..that's the great thing about a Harley thread, it brings out the extreme hate from the keyboard tough guys. I mean for the love of God :huh
    Gary
  4. anotherguy

    anotherguy unsympathetic

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    If you outsource your machine work you're not building,just assembling.
  5. Rapid One

    Rapid One The name says it all

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    While I'm relatively sure that some are welded I know for a fact that many are not. One of the services that my business offers is the rebuilding of "pressed together" crank assemblies.
    A properly fitted, assembled and aligned crankshaft assembly should hold it's alignment with no problem and without welding.
    I'm amazed at some of the run out figures that I'm seeing on this thread, we won't send a crank out unless it is true to .0002 (2 tenths of a thousandth) per end for a total runout of less than a half thousanth. This is in a racing application.
  6. u wish u could ride

    u wish u could ride SHELTON CONNECTICUT.

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    please no rock tossing lmfao!! 98 fxdl here.......
  7. ikonoklass

    ikonoklass Kountersteering Krew

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    Said Jesse James to Paul Jr.
  8. anotherguy

    anotherguy unsympathetic

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    Indeed. I've worked on both of their bikes. And James' bikes were superior. Although the wiring on the R1 was like he'd been up all night and was in a hurry.
  9. crampfan

    crampfan Banned

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    The easiest way to tell if you are having an issue with the tensioner shoe, is to cut the oil filter open after an oil change. If you see bits of nylon within the filter media, replace the shoe. It takes about an hour. (unless you still have stock pipes, lol) I have seen many twinkys go 85k+ without any issue. and I have seen a few go as early as 17k. I almost have to figure its how it's ridden that determines the longevity.
  10. JerryH

    JerryH Long timer

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    Ok, so I don't build engines, I "assemble" them. I never said I had a factory or a million dollar machine shop. I have never had a problem with plasticgage, and as far as measuring bearing clearances, using mics would not likely be any more accurate, though I do have them. Plastigage can show up very minor differences in the clearances, you just have to be patient and methodical.

    As for side by side connecting rods on a Harley, yes it would require offsetting the cylinders, but the Japanese have been doing that since Yamaha built the first Virago back in 1981. And by using offset crankpins, Harley COULD correct the primary imbalance of their engines, making them run very smoothly. This would also make them last a lot longer. But nobody would buy them. People buy Harleys mainly because of their unique sound and their vibration. Remember Harley even tried to trademark the sound of their engines. The Virago ran very smoothy because of it's 90 degree layout. Honda's first 45 degree Shadow v-twin achieved the same thing by using staggered crankpins which resulted in the same thing. A very smooth running engine. But they didn't sell. Because they didn't sound and shake like Harleys.

    And considering how well Harleys sell, you have to wonder why. Probably a lot of things. The Harley name, the look, but most likely because of the way they sound and feel. Nobody WANTS a smooth quiet Harley.
  11. EetsOK

    EetsOK Been here awhile

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    You're right....I guess that's why they sell so few V Rods, especially in Europe.

    [​IMG]
  12. Bueller

    Bueller Cashin?

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    Thought you said you were done with this thread :deal

    Yes, Honda made a dual crankpin 45 degree twin. It was smooth but it's power output was a comparative joke despite the advantage of water cooling. Worse yet, it sounded like a fucking garbage truck. Honda's dual crankpin V-twins are the worst sounding engines on the planet.

    You want a smooth, quiet Harley? Buy anything with the "B" motor. I sure liked mine.
  13. ikonoklass

    ikonoklass Kountersteering Krew

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    This is good to know. Sounds like the pre-2007 Twin Cams can be kept running indefinitely with no cam chain tensioner failures with some pretty inexpensive additional maintenance.
  14. bikeridermark

    bikeridermark Long timer

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    Now he's over in the 883 thread braggin' up Harleys!
  15. cycleman2

    cycleman2 Been here awhile

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    I thought your were moving on. Yes Harley could do many things but they stick with what works for them and their market. Everybody in the vtwin segment tries to copy a Harley, and some of them come close to looking like a Harley but they still aren't a Harley. It's not a matter of being better, best etc., its just that there is only one Harley. Why folks continue to bash the brand makes no sense, bash the riders if you want, but not the bike. Its just a motorcycle, but one that puts a smile on my face every time I ride mine.

    This thread was about cam issues, and I apologize for straying. So now back to the cams.
  16. EetsOK

    EetsOK Been here awhile

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    It is not bashing, it is pointing out real, acknowledged objective issues with a piece of machinery. I don't know why the HD owners are the only ones to cry "bashing" anytime somebody wants to talk about the real mechanical going ons of their bike. I've been on many different boards and it is only the HD owner who make this ridiculous statement...bashing...for fucks sake.

    Like I said before, the TC was a departure from the single cam lay out for the big twins so WHY not use something that 1) they already had experience with and 2) known to be trouble free, the XL 4 cam set up? Not only that, it provides a much better push rod geometry. So, when after 110 years of making motorcycles, they continue to produce an inferior design (compared with their own products) it makes me question WTF they are doing. So they want their bikes to fail? What else is designed liek this? Makes me wonder.

    The TC cam drive isn't the only design I question. Many other manufactureres do shit like this but this is a thread for the HD TC so that is what I am discussing here. Want to talk about the stupid airbox desing of 3 cylinder Triumph T300's? BMW final drives as of late? Shim under bucket valve adjusters? Then start anotehr thread.

    Bashing...for fucks sake, grow up already. Really you sound like some snivelling cry baby when you claim "bashing".

    Really.
  17. GB

    GB . Administrator

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    You've made your point... a few times already... and in just about every HD thread that pops up in Road Warriors.... time for you to move on as you said you were going to... :deal

    :eyes
  18. Bueller

    Bueller Cashin?

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    For the record, you sound like a sniveling cry baby when you whine about the sniveling cry babies crying about bashing :deal
  19. JerryH

    JerryH Long timer

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    Yes, I do like Harleys. Mostly because of the vibration and the sound. Sportsters do not have twin cams and their associated problems. For me, a motorcycle with no sound and no vibration just isn't much fun to ride, especially if it isn't fast. My XT225 has a Z1 modded (drilled out) exhaust and rejetted carb so it actually sounds like a dirt bike.
  20. EetsOK

    EetsOK Been here awhile

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    You're the king crybaby.