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

  1. SMCT

    SMCT Active Member

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    He made that so called "drop" modification to net you a difference of about .007? That's what the math calculates out to. That's absurd. Now you have a gap, an area, or a void that is between the protruded portion of the cylinder head and the cylinder. To avoid detonation you tighten up the quench area as much as possible. That means if you effectively, and correctly measured .032 and .037, then the only area that should have material removed is the cylinders base, and no where else. That amount that needs to be removed should have been anywhere from .035 to .037 on one cylinder and .030 to .032 on the other cylinder. This method prevents detonation because it forces the air/fuel mixture to the pistons center, for the combustion process.

    As far as the torque instructions on that paper posted, it's horse shit. The 90 degree method is bullshit and the least accurate. Polish the o.d. of the head bolts shoulder. Use moly on the shoulder, use moly on the threads. Torque the 4 bolts to 17 to 18 ft pounds, then to 32, and last torque at 40. Between torque intervals, let sit for around 2 minutes or so, as this settles the gasket. Pull the torque wrench slow and steady, and if you want to throw an additional step in prior to the 17 to 18 initial torque, you can do so with 10 to 12 foot pounds.

    My opinion on your cylinder head machine work is, to surface the heads flat, period. Get rid of that step.
    Check your manifold to port alignment and correct if necessary.

    How the heck are you suppose to get rid of that tic if you didn't make adjustments to the rocker boxes?
    Did you put new lifters in this engine? If not, my suggestion is to put a brand new set of S&S premium lifters in it. The only way to figure this out, is to discard the old and put on new. It's only two cylinders and not a V8. Things just don't correct themselves by wishful thinking.

    P.S. I have head gaskets that are .023, .030, .035 and .040. When you think about what was done for .007 of a difference, it's crazy logic and makes no sense what so ever.
     
    #141 SMCT, Nov 6, 2017
    Last edited: Nov 6, 2017
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  2. bigkelk9

    bigkelk9 Well-Known Member
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    Okay, so I just spoke with him, he had my dry for everything first without gaskets to assure everything was good and heads would sink into place, he also just informed me that the specs I used for torque will not work with the Cometic gaskets he provided and sent me a torque sheet similar to what u stated. I have brand new lifters and push rods, cam, valves to accommodate the cam, heads have been completely redone, brand new Carillo pistons.
     
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  3. bigkelk9

    bigkelk9 Well-Known Member
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    IMG_20171106_093240294.jpg
     
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  4. bigkelk9

    bigkelk9 Well-Known Member
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    Ill look at my envoice and verify that i was correct on my numbers.
     
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  5. bigkelk9

    bigkelk9 Well-Known Member
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    20171029_110938.jpg
     
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  6. Forsaken

    Forsaken Active Member

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    I don't know anything about motor work but what the heck is a "convenience fee"???
     
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  7. SomeTexan

    SomeTexan Member

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    I think that is what I like to call the rectal stretching fee. Looks like he got the cheap package too. It costs more to get them to use lube...
     
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  8. bigkelk9

    bigkelk9 Well-Known Member
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    Because they had it turned around in a little over a week.
     
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  9. john sachs

    john sachs Active Member

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    Nothing wrong with spin dropping heads to set the quench.
    If you're going to use the S&S head torque method, use 10, 20, and 90 degrees. Works well and shouldn't pull a stud. I find that S&S cases can't stand the same torque #s that the Harley Davidson Twin Cam cases can.
    Noise in rear cylinder ? Diagnose the problem. If its in the rocker arm/shaft area,you can use Rocker Lockers, this way you don't weaken the rocker arm saddles by removing any material or modifying them.
    You may want to call Randy at Hyperformance, and explain the problems you're having. He's stand up, and will help you.
    John
     
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  10. bigkelk9

    bigkelk9 Well-Known Member
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    Randy is who did the work.. appreciated ur input and glad someone knows what the hell spin dropping is.. lol
    I spoke with s&s today and they told me the same thing Randy did which was to throw some red or green locktite on the shaft for the rocker arms which is most likely causing my tick. So I'll keep you posted.
     
    #150 bigkelk9, Nov 6, 2017
    Last edited: Nov 7, 2017
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  11. Th3InfamousI

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    John, do you use the Cometic torque values on your builds or stick to SS? Cometic seems to represent 42ftlbs, but wondering if that is the Harley cases you mention and you stick with SS values.

    [​IMG]

    Sent from my 2PS64 using Tapatalk
     
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  12. john sachs

    john sachs Active Member

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  13. Th3InfamousI

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    Thanks for the confirm!

    Sent from my 2PS64 using Tapatalk
     
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  14. bigkelk9

    bigkelk9 Well-Known Member
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    Pretty much what s&s said, except they said do it and let it sit for about 10 seconds or so and loosen them up and do it again..
     
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  15. BWG56

    BWG56 Guru

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    What's the word on you motor, any update?
     
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  16. bigkelk9

    bigkelk9 Well-Known Member
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    No verdict yet aside from all of my sources telling me the wrong torque specs.. lol.. I haven' had a chance to even take the p pad off from the rally.. she is still sitting where I parked her after the rally..
    20171114_200724.jpg
     
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  17. BWG56

    BWG56 Guru

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    Do ya have any idea where the ticking is coming from?
     
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  18. bigkelk9

    bigkelk9 Well-Known Member
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    What explanation of the push rods? As to why one had more thread showing then the others?? Idk.. did it 4 times which was very time consuming and got the same result every time..figured if something was wrong I would have heard it right away.. instead she fired right up and rumbled
     
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  19. bigkelk9

    bigkelk9 Well-Known Member
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    So a bit of an update, after many different responses and so on I spoke with S&S and Cometic to get a straight answer because some are saying just re use the gaskets and just re torque to many different specs.. Cometic claims they test torque specs and stress points on many different engines and assure me that I'll be fine if I use their specs which are a 5 step process which is a slow and gradual torque. They also claim that if I don' use their specs my gaskets will never seal. So I ended up speaking with an engineer at s&s and he claims I should be fine and to use their specs. So I ordered new gaskets and I will use the specs they give me when they get here and let you all know how it goes.
     
  20. chubs

    chubs Guru

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    I have no clue what it would be, but if it works, it must be okay. Sweet ride ! !
     
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