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Type: Posts; User: hinsonracing

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  1. Replies
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    And now that's where you have me confused. I get...

    And now that's where you have me confused. I get the math.... but by the way you degree a camshaft it's by degrees of crank soooo the math I have on how much my camshaft is advanced/retarded is...
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    Every DOHC sprocket I've seen has 38 Male teeth.

    Every DOHC sprocket I've seen has 38 Male teeth.
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    Looks and sounds good on paper but from what I...

    Looks and sounds good on paper but from what I measure (I rolled the engine over 4 revolutions and measured 4 times and got the same numbers) that is incorrect. In the real world physical measurment...
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    So even though I measure an average of 18* change...

    So even though I measure an average of 18* change by moving the cams a tooth and leaving the crank at factory timing mark, I'm still only moving 9* by the cam? If that's the case by degreeing cams...
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    Yes sprockets are identical. The pip on the cams...

    Yes sprockets are identical. The pip on the cams is what makes the difference. For twin intake cam mod your new tdc mark is 180* from factory tdc mark then retarded 1 tooth.
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    I had the twin intake cam installed on the...

    I had the twin intake cam installed on the previous build for this head. For this engine I reinstalled the exhaust camshaft that was originally in this head from factory.
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    Okay now it gets weirder...... measuring the...

    Okay now it gets weirder...... measuring the factory exhaust cam I get the following:

    Exhaust cam set on factory timing marks with the above mentioned machine work:
    Opens 21* BBDC
    Closes 11*...
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    So I arrived back home from work and headed...

    So I arrived back home from work and headed straight to the shop, set the degree wheel and dial indicator back and remeasured my open close events for stock timing marks and for one tooth advanced....
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    Probably the most honest answer I've gotten yet....

    Probably the most honest answer I've gotten yet. I had tried on another forum but all I got that "it is hard mechanical facts that each tooth is a 9* change ... don't exceed .010 -.015 machining or...
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    Does anybody have any input besides the smarta**...

    Does anybody have any input besides the smarta** with a photo of someone's bald head?
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    Head shave timing retarding a myth?

    I can no longer find the articles, bit had read somewhere once upon a time that for every .010" shaved on our engines that it retards the cam timing 2* degrees. I am wondering if it was based upon...
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    Okay guys I need some serious brass tacks and...

    Okay guys I need some serious brass tacks and hard facts. I'm in no way new to working on cars and engines (Master ASE certified for 12 years), however, I am new when it comes to modifying from...
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