topend clicking

Discussion in 'Small Block Tech' started by d.pickard, Jun 6, 2003.

  1. d.pickard

    d.pickard Member

    this is the first car i've owned that is not ohc. there is a clicking coming from topend of my motor. do the rocker arms require adjustment? if so how?
    thank you again
    84 riv
    307
     
  2. d.pickard

    d.pickard Member

    i'm could answer my own quote

    i hate to answer something that i posted, but... i'm used to hla and other self adjusting lifters. what the hell is a rocker arm? i really don't know how to adjust them. should i buy a service manual and just ignore everyone on this board? or do you really know something?
    thank you. hopefully for the last time.
    dave pickard
    d.pickard@attbi.com
    307
    V-8
    1984 riv
     
  3. ArcDevilz

    ArcDevilz Guest

    Im not sure about the newer models but the motor I have a 1971 did not have adjustments. Someone will post a reply in due time. The rockers are the part that hold the lifters down. Hows your oil pressure?
    ivan
     
  4. rtabish

    rtabish Well-Known Member

    your 307 has hydrolic lifters and require no adjustment. if you hear ticking from the top end of the engine in the valve cover area, it usually means the lifters are not "pumped" enough to meet the push rods and rockers and in that order they actuate the valves in your cylinder head resulting in a "ticking" sound for each lifter/rod/valve assembly. usually the cause of this is an overworn camshaft or lifters, gummed up lifters [from really dirty oil], or sticking valves usially caused by carbon or oily tar built up around the valve stems. these engines are pretty notorious for any and all of these problems.
     
  5. Floydsbuick

    Floydsbuick Well-Known Member

    Having an Olds in my Estate Wagon, I may be able to provide some insight. Those engines have the air tubes that run above the exhaust manifolds. If they are leaking, they will tick. You say your smog pump belt is cut. Is the tube from the catalytic converter still conected to the pump? If so, you have exhaust going into it that isn't being recycled through the carb. I don't know what that would do or sound like, but you might want to investigate. In my case, the smog pump is still functional, but I removed the computer, computer controlled distributor and carb. I installed as normal dist and carb. Most of the vacuum lines are still there, but some are now for decoration. It passes PA emission. Olds engine by design were the cleanest of the GM V-8s emission wise. There was actually a shortage of them in the late 70s cause Chevy, Pontiac, and even Buick were shnarfing them up for their California cars. At one point I had an Olds that was passing the tough PA emissions with a hollow cat! I can't say for sure that you'll pass emissions without the pump, but this engine will give you the best chance. My $0.2
     
  6. alec296

    alec296 i need another buick

    ticking

    some of those 307 engines have a tubelike exhaust manifold like a header and i have seen these crack and leak
     

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