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Tear down

Discussion in 'General' started by bigkelk9, Oct 4, 2017.

  1. john sachs

    john sachs Active Member

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    Those are real world REAR WHEEL numbers. It takes a spot on tune.
    99% of the S&S crate motors I've done are fuel injected Harley Davidsons. Carb bikes make a little less.
    John
     
  2. BWG56

    BWG56 Guru

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    That’s usually the trickle down effect, clutch, tranny, drive pulley then the bearings
     
  3. BWG56

    BWG56 Guru

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    What size are the crate motors your doing to get those numbers, 117?
     
  4. john sachs

    john sachs Active Member

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    124".
     
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  5. bigkelk9

    bigkelk9 Well-Known Member
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    I don't know whats what and kind of dont care right now. Just put almost 2k into this fucking engine, followed instructions to a t. Torqued everything per manual and have an oil leak and it's leaking compression and the top rear rocker box still fuckin ticks!.. gotta tear her down again and figure out what the hell is what
     
    #125 bigkelk9, Nov 5, 2017
    Last edited: Nov 5, 2017
  6. BWG56

    BWG56 Guru

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    That's a bummer:oldbang: when ya put that kinda time into it
     
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  7. dentdude36

    dentdude36 Guru

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    That sucks
     
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  8. Forsaken

    Forsaken Active Member

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    That sucks Big time... having to do the job twice.
     
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  9. bigkelk9

    bigkelk9 Well-Known Member
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    I switched to metal gaskets instead of the factory cardboard gaskets, so I'm just going to tear her down yet again and do this all over again. Obviously I did something wrong but for the life of me I can' figure it out. Torque specs were all dead nuts on. I put 100 miles on her and in the last 15 miles or so of it I hear the pinging sound which was me loosing compression somewhere as well as my ticking which came in right at about 20 miles. Is what it is, just gotta spend more time with her. Really sucks because it' prime riding time right now!
     
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  10. Forsaken

    Forsaken Active Member

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    I know that feeling when you just want to wrap it up real quick and hit the road, I usually end up with some parts left over. You are in essence performing heart surgery on your baby... step back, take a break then hit it with a clear head. I'm sure you'll find the problem... it's usually the little details that get you. I'm following your thread cause I know I'll eventually have to do some motor work.
     
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  11. bigkelk9

    bigkelk9 Well-Known Member
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    Appreciate that. I got the parts in complete exactly a week before I knew I was going to the Rally, worked on her the whole weekend, then everyday after work. Got off at noon on Friday for the finishing touches because I waa taking my time to make sure I did everything right. I wanna say I did everything right but obviously didnt.. the only thing I know for sure is that there is something wrong with my rocker boxes that had nothing to with install because it sounds the same exact way it did before. But I'll keep everyone posted. I might look at it this week.. idk
     
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  12. SomeTexan

    SomeTexan Member

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    Have you tried retorquing the head bolts? A couple of heat cycles will fit everything together and loosen the bolts a little. As for the rocker box noise, cams break in too. Maybe a quick adjust will take care of it.
     
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  13. Forsaken

    Forsaken Active Member

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  14. Th3InfamousI

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    Very true...I very much believe owning a BigDog will either teach you patience or it will have a for sale sign on it. No real middle ground.

    In the end, in a sick way, I've always been happy with the lessons it teaches me.



    Sent from my 2PS64 using Tapatalk
     
  15. bigkelk9

    bigkelk9 Well-Known Member
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    Yeah.. and believe it or not I am determined to figure this out.. u once told me that and made me think real hard every time Dahlia pisses on my parade!
     
  16. Th3InfamousI

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    Regarding the torque sequence for the head bolts. Did you do 8 then 18ft lbs then another 90 degrees (1/4 turn)?

    Also note the mention of a drop of oil, so the torque rating is WET. There is a difference between WET and DRY ratings, if you didn't apply some type of bolt dressing then you probably came up a little short on the torque.

    [​IMG]



    Sent from my 2PS64 using Tapatalk
    [​IMG]
     
    #136 Th3InfamousI, Nov 6, 2017
    Last edited: Nov 6, 2017
  17. bigkelk9

    bigkelk9 Well-Known Member
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    Yea sir.. sure did.. have the entire manual thanks to s&s
     
  18. SMCT

    SMCT Active Member

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    So let's here a recap on who touched what and what they and you did.
     
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  19. SMCT

    SMCT Active Member

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    what the heck is that circular ridge on the heads surface? [​IMG]
     
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  20. bigkelk9

    bigkelk9 Well-Known Member
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    That's what he called a spin drop to loose the gap and increase the compression. So what he did was bore put my jugs because they weren't true, so he sent me the jugs and new pistons back so i can mock it up and send him back a measurement on the depth from the top of my jugs to the top of my p stons which was .032 on the rear and .037 on the front. He calculated how much to shave the heads to bring me down to about .025 - .029 on both which were specs from S&S for their crate 117's. When he sent everything back he sent me metal gaskets and told me to use those. I torqued my heads down per instructions which I still don't feel comfortable with because it just doesn't seem like it's enough. But I did and left it like that. The whole purpose for this tear down wasn't to increase the power of the bike and all That, but being I was getting brand new Carillo pistons and it was bored over and the bike was already tore apart I figures why not make it how it is supposes to be instead of dummied down for a production EPA bike which is what we all had originally.
     

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