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Thread: Is this off too much?

  1. #1
    Registered User siteunseen's Avatar
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    Default Is this off too much?

    I'm putting a ZX distributor on my car and I want to do it right. So could I get you guys opinion on my spindle position? Should I drop the oil pump and get it at 11:25? It's at 1:35 now. And with the #2 on the sprocket showing the closet to the timing mark doesn't that mean it's actually in hole #1? Aren't they separated by 8 sprocket teeth?
    Thanks for any advice,
    Cliff
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    1972 240Z #918 New Sight Orange
    1977 280Z #305 Light Blue Metallic
    1972 240Z #110 Persimmons Red

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    Registered User madkaw's Avatar
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    Drop the pump if it's not right. So you are at TDC #1 right? Not sure of the relevance of the other stuff.
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

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    Everything looks great, assuming that the tight side (driver's side) of the timing chain is tight, and you're on zero. Can't really see the picture, it's too dark. You can put a wrench on the cam sprocket nut to tighten up the tight side, if it's off a little. The numbers don't really matter, it's the notch and groove that do. Yours look right.
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    1976 280Z, with some minor modifications

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    Registered User siteunseen's Avatar
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    Quote Originally Posted by madkaw View Post
    Drop the pump if it's not right. So you are at TDC #1 right? Not sure of the relevance of the other stuff.
    I was curious as to whether someone has moved the cam sprocket to the 2nd hole, I guess I should have included that

    I'm pretty sure it's in #1 though.
    1972 240Z #918 New Sight Orange
    1977 280Z #305 Light Blue Metallic
    1972 240Z #110 Persimmons Red

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    Registered User siteunseen's Avatar
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    Thank you Zed Head, your FSM diagram looks like what I have. I'll continue marching forward, tomorrow. It's Miller time!
    1972 240Z #918 New Sight Orange
    1977 280Z #305 Light Blue Metallic
    1972 240Z #110 Persimmons Red

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    Nova Scotia,Canada,Earth Blue's Avatar
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    Default Distributor Alignment at TDC 11:30 11:25 Timing

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    There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply.
    The person who buys on price alone is this man's lawful prey.


    John Ruskin (1819 - 1900)



    ZCars in Eastern Canada seaport ready for shipment to Europe

    http://ZSportCanada.com


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    Registered User madkaw's Avatar
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    That's the way I know it

    Quote Originally Posted by Blue View Post
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    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

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    Nova Scotia,Canada,Earth Blue's Avatar
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    The exact location of 11:30 can be off a tooth if your distributor mount is clocked enough so that you can set the correct electrical timing.

    Installing the spindle off a tooth or two is a way to fudge the timing if you can't source the correct distributor mount.

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    There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply.
    The person who buys on price alone is this man's lawful prey.


    John Ruskin (1819 - 1900)



    ZCars in Eastern Canada seaport ready for shipment to Europe

    http://ZSportCanada.com


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    Here's a picture of the greasy tang on my old original 1976 engine, at zero, sitting in the garage, headless. Y'alls picture is just too shiny.

    We've got three that show a different orientation. siteunseen's, mine and the FSM. Not sure where that shiny picture is from or why it would be different. Just saying, something's off, somewhere.
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    Last edited by Zed Head; 06-04-2014 at 08:43 PM.
    1976 280Z, with some minor modifications

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    Well your can't be right because your engine is DIRTY.

    Is is the angle of the dangle here guys. The manual is very specific at 11.25. Cliff's pic looks straight up high noon, but is it the angle of the camera-don't know. But when someone tells me 11;25 and I'm there at high noon-I'm late
    Steve
    71 240z,bw-5sp 2.4-40 over,balanced,e-88,big valves,ported&polished, stage2,header, triple Mikuni's 40's
    3.90 Subaru STI LSD

  11. #11
    Registered User siteunseen's Avatar
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    Maybe they stretch after 40+ years? It's just a frogs hair off but since I have the gasket and lots of time I'll drop the pump and re-time it just for fun. it's against the law to drink and drive but to drink and wrench is perfectly legal at my garage, messy though. I'll get a pic of the spindle's timing mark where it lines up with the mark on the pump's top tube.

    Thank you for the "meeting of minds", I'll be back with my findings Sirs.
    1972 240Z #918 New Sight Orange
    1977 280Z #305 Light Blue Metallic
    1972 240Z #110 Persimmons Red

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    Registered User mjr45's Avatar
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    I ended up having to put my dizzy and pump on totally off what the FSM says to get mine timed correctly. My #1 is where the FSM puts #6 which makes it sound like something is 180 off, which it is not on the cam, and crank, just the pump and dizzy. I followed a suggestion by Zed in order to get my timing correct(I was also really really tired of pulling the pump). Car runs well now.
    Last edited by mjr45; 06-05-2014 at 08:14 AM.
    75 280Z almost done
    49 Chevy 3100 p/u next project
    96 Dodge 2500 4X4 tows my 5th wheel

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    Nova Scotia,Canada,Earth Blue's Avatar
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    Electrical timing (spindle, pump, and distributor) is independent of mechanical timing (crank and cam).


    The way to set up an engine is to put it at TDC then ensure that the cam marks are where you want them (positions 1,2,3).

    Once the crank and cam are happily sychronized, you have to get the spark to ignite the mixture at the right time. To do this on a Z you again put cylinder 1 at TDC then adjust the spindle to 11:30.

    Once this is done then the distributor plugs should be 153624 CCW from the #1 post on the distributor cap.

    Now the distributor and plugs are nearly synchornized.

    The final step is to start the car, use a timing light and rotate the distributor so that at idle the spark on #1 plug occurs between 8degerees and 20 degrees depending on the motor, emissions, and modifications.

    IF THE DISTRIBUTOR CAN NOT BE ROTATED ENOUGH CW (advance) OR CCW (retard) THEN YOU HAVE 3 OPTIONS:

    1. Flip the distributor over and try to get extra rotation by adjusting the nulling plate (8mm bolt)
    2. Find a new distributor mount that clocks the distributor in the required direction
    3. Move the spindle a tooth or two
    4. Offset-Rotate plugs on distributor along with any of the above
    Last edited by Blue; 06-05-2014 at 02:14 PM.
    There is scarcely anything in the world that some man cannot make a little worse, and sell a little more cheaply.
    The person who buys on price alone is this man's lawful prey.


    John Ruskin (1819 - 1900)



    ZCars in Eastern Canada seaport ready for shipment to Europe

    http://ZSportCanada.com


  14. #14
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    I agree completely with verifying that everything's in alignment and orientation. And that there is a pretty wide range of adjustment on the distributor. But I think that picture that you posted is a product of that range of adjustability. It's not the stock setup, it's something that's been made to work. It's a variant. Better to follow the FSM for a stock setup, otherwise you could be dropping the oil pump and making adjustments for the wrong reason.
    1976 280Z, with some minor modifications

  15. #15
    Registered User siteunseen's Avatar
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    SUCCESS GENTLEMAN!!!!
    I tried 4 times getting the tang at 11:30 by rotating the oil pump, no dice, it's straight up and down. But looking at my Tom Monroe book the top of the tang lined up perfect with the backside of the top bolt hole, maybe an odd front cover or something. I did see that my timing chain tensioner was sticking out too far through the oil pump hole, so maybe the loose chain has something to do with it? Who knows? I do know I've got a lot of work to do on that little baby. But boy oh boy does it rev up like a blender. I'm dying to drive it but it is storming out now so I'll get a chance to tidy up all the wires and then my garage.
    Thank you all for your help! I'll drink some beers for everybody.

    Oh yeah, dropping the oil pump is a bitch. Had to drop the stabilizer bar from the frame, then unbolt the drivers side behind the tire. It wasn't too bad I guess, just not as easy as I thought.

    Looking back at my 1st post's pictures I guess I did get it a little better, maybe a tooth?
    Last edited by siteunseen; 06-05-2014 at 05:01 PM.
    1972 240Z #918 New Sight Orange
    1977 280Z #305 Light Blue Metallic
    1972 240Z #110 Persimmons Red

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