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Parts List

Discussion in 'Motorcycle Tech Talk' started by JohnnyBiker, Dec 15, 2011.

  1. hotroadking

    hotroadking Super Moderator Staff Member

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    Leave the bottom end alone do big bore pistons and heads.
    Then Dyno. If you want to change cams later great

    Also if you get up around 590 lift you may have clearance issues in can chest




    Sent from my iPhone using Tapatalk
  2. Smarty

    Smarty New Member

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    The fueling oil pump is about pressure and volume. Hence the name, Fueling high flow, not high pressure oil pump. Like stated before, earlier model twin cams have poor oil pressure and flow at idle. One of the reasons you have to make sure and use the right filter(microns) doesn't filter out as fine of particles.
  3. hotroadking

    hotroadking Super Moderator Staff Member

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    The feuling pump debate goes back years
    I remember all the threads over it back as far as 04
    most techs that built big inch engines before it was
    as simple as it is today felt it was nice but not necessary

    You can put the Baisley spring kit in and gain
    pressure if you need to see the gauge at a higher
    number.

    Nice yes, works yes, necessary - nope
  4. cardboard

    cardboard Well-Known Member

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    He can't hear, just go with the Flow ! He's doing it his way.
    Something has to be said many times till he soakes it in.:gah::roflmao:
  5. Lucifer

    Lucifer Well-Known Member

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    I agree, more doesn't always mean better...if you NEED a new oil pump,consider it...A mild 95" build isn't going to blow up because you're using the stock oil pump,if it overheats,the problem would be more like running too lean or too much advance....
    JB...HRK is giving good advice...just do the top end....big bore,head work and raise compression...Then see how you like the performance...if you like it,you're done:rolleyes:
    Remember a bagger needs bottom end torque,if you want high RPM horsepower,ride the Sporty:)
  6. cardboard

    cardboard Well-Known Member

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    Everybody I know that builds a new engine replaces the Oil pump with a new style. Even the HD dealer.
    You are not lookin for more oil pressure. You are lookin for more oil flow.The Oil is the live blood of the engine.
    And if you don't disassemble the oil pumps you don't get to see the scaring in the housing or other parts or the Orings.
    A new HD style oil pump is good insurance. Do it now don't wait till ridin time.
    Yer gonna already have the pipes off the bike. Its just a few gaskets and all.
  7. Lucifer

    Lucifer Well-Known Member

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    I'm doing a big bore too, but last year I did the SE hybrid and cams, the oil pump with the kit increased flow by a whole 1/3 of a quart(8%) and scavenge buy almost a quart(22%)
    Now there's a new Hybrid kit that increases flow buy a quart(23%) and scavenge by 2 quarts(50%)....(based on a 4 quart capacity bagger)
    Should I run out and buy a new oil pump because there's one that flows and scavenges more:eek:
    Were the previous engines failing because the stock pump couldn't flow or scavenge enough:confused:
    JB's engine already had a gear drive conversion and cam done,so it's a safe bet the inner cam bearings were taken care of...might even have an upgraded oil pump...
    If his bike starts to suffer from high oil temps or excess oil from the breathers...check it out,if not leave it alone....
  8. hotroadking

    hotroadking Super Moderator Staff Member

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    Now why didn't I think of that... :roflmao::roflmao::roflmao:

    CB's right he's gonna do whatever he wants,
    I'm saving up my "told-ya-so's" for the next JB thread
    titled "Big Bore Sucks not enough power what should I do":rolleyes:
  9. JohnnyBiker

    JohnnyBiker Well-Known Member

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    I am about 95% sure that I will leave the 37's in for now. I am buying a desktop dyno computer program that will let me see if the cams that I have in now will give the power I want where I want it. I have used these types of programs before and they work. Now that I know what the cfm ratings are for both the 40mm cv and the 44mm cv, I can better determine what I want.;)
  10. Smarty

    Smarty New Member

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    You just said you are already changed your oil pump out. Once he's in there he can check out the oil pump and see if he has the new style pump. He just does not want the old style. Don't know what people get in all a huff about taking care of an engine with a little insurance. Build what he wants, blow it up and build it again! Just money!
  11. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Lucifer, I sent you an email...;)
  12. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Ok, I had a chance to talk to Hillside Cycle. I am impressed with how easy he is to talk to and the fact that he speaks English instead of complete engine jargon. Not that I didn't believe you guys, but he basically confirmed where the 37g cams will peak. On the compression side, he suggested that I bring it to 10.0:1. So that is what I will do. I am afraid that he is a little high on the head work so I am most likely am not going to send them off to him. We wants a total of around $1600 for total job. OUCH!!!!
  13. Lucifer

    Lucifer Well-Known Member

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    Yep,I did... Stock oil pump got scored up with chunks of the spring loaded tensioners...new stock pump was going to cost me as much as the Hybrid kit which included the 1st upgraded pump,so to me it was a no brainer....get rid of the spring tensioners and get the new oil pump I needed,for the same amount of money...
    An 8% increase in flow is not a lot more....
  14. Smarty

    Smarty New Member

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    Look at Big Boyz for a price!
  15. Lucifer

    Lucifer Well-Known Member

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    :roflmao:Yeah,true enough...:roflmao:
  16. JohnnyBiker

    JohnnyBiker Well-Known Member

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    I am not talking 1600 bucks for head work, that price is including gaskets, boring, honing torque plate, pistons, and rings. the head work will probably get sent to someone that participates here on this forum.
  17. cardboard

    cardboard Well-Known Member

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    Not gonna lie to you JOhnny, Scott has some really good heads. I like his work.
    And I like Scott. Did you check about Drilling Two 1/8 " holes in the lower rocker support plates. Scott had a mechanic to post this like I said months back in a Magazine.
  18. JohnnyBiker

    JohnnyBiker Well-Known Member

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    I don't doubt that he does good work CB but he is about 3 times as much as other people that can do just as good of job. that is a lot of money. As far as the two holes, no I haven't had the opportunity to speak to him about that yet.
  19. JohnnyBiker

    JohnnyBiker Well-Known Member

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    Oh, I am going to do what BaggerPaul did and go to a 98 CI instead of the 95". while talking with Scott, he did give me an estimation of what he thought I would get out this build. I am really impressed with the torque number, but of course it is just an estimate.

    I thought this would be interesting for some. I was talking to a guy at work that is running a 107CI" and he is running the Red Shift .637 cam. he was telling me that he is only getting about 113/113 out of his set up. If I can get over 100/100 out my set up, what is he doing wrong?
  20. cardboard

    cardboard Well-Known Member

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    You want these kind of numbers out of yer bagger to ride you and yer wife around. ?
    And what would you consider the fuel milage to be. And how long would you consider the bike lift to be ?
    You are lookin at Numbers.
    Why not build a bike to enjoy, not race?

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