ok have another problem

Discussion in 'General Maverick/Comet' started by sam03rc, May 1, 2010.

  1. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    You sir are correct, I suffer from sometimers. Yeah he wont get much of a reading unless he has a bent valve or three.
    Must correct my post now...
     
  2. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    That is a positive stop rocker arm set up. The stud has a ledge on it which stops the rocker ball from traveling down the rocker stud.You turn the rocker nuts down till they stop then torque to 25 to 30 ft lbs and the adjustment of the valvetrain is done.
     
  3. sam03rc

    sam03rc Member

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    ok so i just torque them and leave them thats it??.... and when i get new pushrods i need to do a compression test and turn the engine all the way over to make sure nothing sticks right? how to i test to make sure the cam is right since i replaced the timing chain???
     
  4. rthomas771

    rthomas771 Member

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    The dots casted into the gears need to point to each other.

    [​IMG]
     
  5. RobbieG.

    RobbieG. Member

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    Thats the same type of rockers i have. I thought you turn the nut 3/4 of a turn after the push rod stops spinning? Am I setting them wrong?:hmmm:
     
  6. rthomas771

    rthomas771 Member

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    The stud mounted rocker, pre-'68, gets tighten down 5/8"-3/4" after all the free play is removed.
     
  7. RobbieG.

    RobbieG. Member

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    So that's why the lifters tick when I first start it up. time to reset the valves.
     
  8. sam03rc

    sam03rc Member

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    i set my timing chain that way when i took out the old timing chain ( it was at tdc ) the dots were not lined up the cam was at the very top so i turned it so it lined up with the crank ( thats what i was told to do ) and they were inline so i put it all back together.

    yea robbie i heard ticking from my engine too so i would guess thats what you need to do is torque them down
     
  9. sam03rc

    sam03rc Member

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    what size pushrods do i need to get????
     
  10. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    6.905" std length pushrods for a stock 72' 302.
     
  11. Dave B

    Dave B I like Mavericks!

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    What you need to do, before you waste any more money, is figure out why they bent..something isn't right.
     
  12. sam03rc

    sam03rc Member

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    well i need new ones anyways i mean i dont have the money right this moment. but dont i need to use the pushrods to turn the engine over to see if i have valves bent and if my timing chain is right??
     
  13. Dave B

    Dave B I like Mavericks!

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    You'll need the push rods, to see if the piston, is hitting the valves...
    What type of timing chain did you get? Is it indexed? or does it only have one keyway for the cam...aftermarket performance ones, usually have minimum 3 different positions you can set the cam.
     
  14. sam03rc

    sam03rc Member

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    well when i get the pushrods how do i see if the valves hit the pistons?
    and this is the timing chain that i was told to get ( the same guy who told me how to bolt down the rockers) and he said to line it up with the two circles on either gear and it would be lined up.

    http://www.summitracing.com/parts/CCA-2120/
     
  15. Blown74

    Blown74 Member

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    bent pushrods

    Sam- if you multiple bent pushrods , then as noted before , you probably have the cam gear installed wrong. Pull the cam cover, find TDC for #1 and find out where you have the gear set installed. I'm guessing its installed wrong. Get it right first, then install new pushrods and stare checking for any bent valves.
    buy a motors manual for your car.

    It will have all the info you need to correct your setup and check for damage.
     

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