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noisy tappets/ valve clearance

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wade
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2015/02/15 20:25:28 (permalink)
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noisy tappets/ valve clearance

Is anyone able to tell me what i need to set my valve clearances to? I have set them to factory settings but its a re grind cam and they are quite noisy.

All the specs on the card they gave me say
running clearance inlet .008 exhaust .008
lift @ lobe inlet 264 ° exhaust 264°
Advertised timing
exhaust duration 280°
Inlet duration 280°
.050 valve timing
exhaust duration 230°
Inlet duration 230°

if someone could help me out id be very appreciative
#1


14 Replies Related Threads

    PeterM
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    Re: noisy tappets/ valve clearance 2015/02/15 23:23:52 (permalink)
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    What engine??
    Are you measuring clearances when engine is hot or cold?
    Are you reliably measuring from the base circle of the cam? (ie double checking measurements)
    Is it all of the "tappets"/"followers" making the noise or just one or two?
    Which oil are you using?
    How old is the oil?
    What valve springs are you using?
    Are you getting plenty of oil onto the cam and the "tappets"
    What condition are the "tappets" in?
    Are you using oil additives?
     
    My experiences with cams approaching, and over 0.5" lift, is that there is inevitably increased "tappets" noise (but depending on profile). Simply everything is working harder (and wear out faster) because of the increased lift.
     
    #2
    wade
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    Re: noisy tappets/ valve clearance 2015/02/16 07:00:14 (permalink)
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    Its a pinto it sounds like only one or two at idle worse when revving. They are standard springs and camtech followers. I am using 20w50 castrol gtx also the motor is fresh and has only been run for about an hour tops. I am measuring from the bottom of the lobe or when the lobe is pointing up in the air. I also set the first 2 while warm then let it cool then re measured and did the rest as thats what clive cams told me. I have run it with the cover off and oil is spraying on the cam evenly.

    Thanks
    #3

    David S
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    Re: noisy tappets/ valve clearance 2015/02/16 09:14:19 (permalink)
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    Hi Wade, I have a Clive cams regrind in my pinto and it's pretty noisy. I didn't replace the followers at the time as it was just a budget freshen up until I can get the funds together for a decent build. Valve clearance specs for in/ex are 10 thou. I set them cold and on start up it sounded like a tractor. Reset them hot and no change. I have since set them at 8 thou for a marginal improvement. I've done about 4000km and it hasn't changed, better or worse. I'd say the the most likely cause is the reprofiled cam running on used followers as everything is set up right. I will be replacing it all with a decent cam kit to solve the problem. I can't hear it over the rattle from my aftermarket quick shift anyway.
    #4
    Gdub
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    Re: noisy tappets/ valve clearance 2015/02/16 12:14:51 (permalink)
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    Rocker angles are critical on Pinto's.  It is possible that the clearances are set right but they will still rattle and also wear out the cam and followers faster if they havent been set up right

    Make it go FASTER!
     
    #5
    wade
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    Re: noisy tappets/ valve clearance 2015/02/16 21:38:01 (permalink)
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    I spoke to clive cams and they suggested i bring them up to .008 on inlet and exhaust did that tonight but no change :/
    #6

    PeterM
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    Re: noisy tappets/ valve clearance 2015/02/16 23:00:10 (permalink)
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    Could be the cam profile.
    I am not a fan of Castrol GTX on these 2 litre engines.
    When setting/checking the cam to follower clearance using the feeler gauge, with the gauge in place try rocking the follower side to side (ie to the front of the car and then to the rear of the car). There should be no side to side movement.   
    #7
    wade
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    Re: noisy tappets/ valve clearance 2015/02/22 14:46:54 (permalink)
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    Seemed to have had a minor win. After adjusting them to .008 made no difference i noticed that both cam lobes on number 4 had looked like they had worn a little more than the rest so i changed the followers and upon inspection they seemed like they had a uneven surface so after changing them it is much quiter not 100% but an improvment
    #8
    wade
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    Re: noisy tappets/ valve clearance 2015/02/22 14:49:02 (permalink)
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    Now i need to figure out why its over heating when its sitting at idle in the shed im suspecting a sus thermostat but when i tested it in boiling water it seemed to open fine
    #9
    GeeBeeN
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    Re: noisy tappets/ valve clearance 2015/05/23 18:14:03 (permalink)
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    Are there any hydraulic lifters that would work better.???
     
    Does this mean even a small cam grind on a 2.0L Pinto stuffs the angles up.???
     
    Causing excess wear.???
    post edited by GeeBeeN - 2015/05/23 18:24:39

    Do It Once,!! ... Do It Right,!! ... Do It Better,!!
    #10
    GeeBeeN
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    Re: noisy tappets/ valve clearance 2015/05/23 18:22:49 (permalink)
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    wade
    Now i need to figure out why its over heating when its sitting at idle in the shed im suspecting a sus thermostat but when i tested it in boiling water it seemed to open fine



    Do you have a Radiator or Fan Shroud fitted.???  ... I didn't know both types existed, now where to store didn't know Stuff.!!
    post edited by GeeBeeN - 2015/05/25 09:33:30
    #11
    NQRS
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    Re: noisy tappets/ valve clearance 2015/05/23 21:51:40 (permalink)
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    A radiator shroud does help a lot with directing air flow. From previous threads on the rocker gear everything has to be spot on, the position of the arms on the rocker posts, rocker angles, spring  height and  seat pressure. I was thinking about a different cam when first putting my engine together- my brother had gone to a huge amount of effort to have the geometry set spot on and asked me not to change the cam because of the amount of work involved in re-aligning it. The only change I made was to fit dual valve springs and he rechecked the spring height and seat pressure to make sure it was ok before fitting the head.
    Cheers,
    Len
    #12
    ratta tat tat
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    Re: noisy tappets/ valve clearance 2015/05/24 06:50:21 (permalink)
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    Rad shrouds make a world of difference. When I first installed a pinto in my MK1 there was no shroud from slam panel to radiator tank or fan shroud and the coolant boiled. Both of these make a big difference to temps. The top shroud lowered temps a lot but I ended up having to fit the fan shroud in the end because it overheated again on a hot day stuck in heavy traffic.
    #13
    GeeBeeN
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    Re: noisy tappets/ valve clearance 2015/05/25 10:04:20 (permalink)
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    Gdub
    Rocker angles are critical on Pinto's.  It is possible that the clearances are set right but they will still rattle and also wear out the cam and followers faster if they havent been set up right




    Is this something the Average Bear can do,??  ... From Where may the "how to do Manual" be Sourced, it's not likely to be Single A4 Sheet.!!!

    Do It Once,!! ... Do It Right,!! ... Do It Better,!!
    #14
    wade
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    Re: noisy tappets/ valve clearance 2015/05/25 17:09:30 (permalink)
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    I sorted the overheating problem turned out to be the ignition timing and was running to lean. I bought i 3 core radiator off ebay with a thermo fan but couldnt use the fan as it fouled on the water pump pulley so i just stuck with the standard fan. Sits on about half now at operating temp. Im not using a fan shroud but i have a stock one might see if i can mount it to the new radiator. As for the noisey tappets i adjusted them to .008 for inlet and wxhaust and they seem to have quietend down a bit after a few weeks of driving it dailey.
    #15
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