Casale gear drive timing chart

Discussion in 'PSI Superchargers Tech Questions' started by Battleborn, Nov 21, 2019.

  1. Battleborn

    Battleborn Member

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    Does anybody have instructions or a timing chart for a 13 hole Casale gear drive on a hemi? thanks
     
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  2. kosky racing

    kosky racing Comp Eliminator

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    I believe its the same as RCDs-jump in Mr. Reehl
     
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  3. Battleborn

    Battleborn Member

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    ok ill give you a call tomorrow, i know how to set it up straight up just wondering if there is a chart similar to rcd's for how many degrees each bolt hole will give you
     
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  4. Mike Kern

    Mike Kern Member

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    360°/'#of teeth'=degrees per tooth
    degrees per tooth/number of bolt holes=degrees adjust (per hole) from straight up.
    360/48=7.5
    7.5/11(RCD)=.68° adjust per hole

    360/48=7.5
    7.5/14=.5357° per hole
    7.5/13=.5769° per hole
     
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  5. Mike Kern

    Mike Kern Member

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    The math works the same. The only difference being there are only seven holes in the hub. The gear still has 14 combinations that can bolt to the hub. I think the bolt circle becomes limited for the bolt heads and... do you really need 14 bolts? I don't have one in front of me so maybe I'm missing something.
     
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  6. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    In the time that it took me to read this, I could have tried another bolt hole LOL.

    I degree my cams at .050 lift.

    Obviously you have to have TDC checked and your pointer set up first.

    I then put the crank at the desired degree. Let's say we're installing at 35. So the crank would be at 35 BTDC.

    Before I put the cam gear on, I advance the cam to .050 lift. Make sure sure you are measuring off of the intake lifter. Make sure there's no slop in your dial set up.

    I then take the cam gear and try to find the gear alignment that makes the bolt holes line up the best. I put a couple bolts in, then back the crank off, roll it back to .050 lift on the dial and see where the crankshaft is. If it's where you want it, I back it off and check it two more times.

    I then mark two of the bolts with a paint pen, leave them in, and remove the other bolts to put a dab of red loctite on. Like half a drip. I install those and torque in a star pattern. I then remove the two marked bolts, loctite then torque. Leaving two bolts tight while you loctite the rest prevents any from dripping down and getting between the cam and the hub, potentially causing the gear to not be fully seated on the hub. I have torqued them to 35 on the hemis I have built. Once I have the bolts torqued, I check the cam one more time to make sure nothing moved.

    Sometimes you nail it first shot. I don't know the math to tell you, but using this method, there's not going to be any more than about 3-4 combinations that the bolt holes line up, depending if you have a 7 bolt or 11 bolt hub. If you are shooting for 35, often times you have to make a choice between 34.5 or a little over 35.

    I have degreed cams quicker than it took me to type this too...
     
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  7. Mike Kern

    Mike Kern Member

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    Reading is a skill... I missed the first line about instructions. Everything that Will said is correct. The only thing I would add is that you should always turn the engine in the direction of rotation and if possible, try to load the cam in the direction of rotation as you check it to take out any lash in the gears.
     
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  8. Mike Kern

    Mike Kern Member

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    Hey Robert, I understand that. I'm trying to figure out how the 14 hole (7 bolt x2) actually works math wise. Not that it matters, but it is interesting to me. I believe the math for the degree change still works as I stated above. The caveat being is that it must work as 2 separate 7 hole verniers. The reason being is that the bolt circle must be an odd number for the vernier to work properly. A 7 hole vernier adjusts the cam 1.07° per hole. The second set of holes is offset by 1/2 tooth thus splitting the 1.07° into .535°.
     
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  9. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    I will add that if you don't pay attention to which way you rotate the gear when you are trying new spots, you CAN turn 3 or 4 possibilities into more....
     
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