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  1. #1
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    Default Running in a cam

    hey out there ive just installed a new camshaft lifters all the jazz can anyone give me a quick run down on the running in period for the cam and lifters?????? also the cam i got is a crow 5666 has anyone used this grind before ?

  2. #2
    Part of the furniture REV308's Avatar
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    Fire it up, run it at about 2500 rpm for 15-20 min, everyone has a different way of doing it, but thats how i've done mine and they have all been good.

  3. #3
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    hey thanks for that i had the pissed ****head from next door try to tell me today that i should hold it flat for 10 minutes and then rev the piss outof it on and off for another five my last motor was run in on a dyno so ive never had to do this before

  4. #4
    Part of the furniture REV308's Avatar
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    Holding it flat for 10 minutes will probably still run the cam in, but most likely **** the rest of the engine hithead

  5. #5
    Do you ever leave? WB5LTR's Avatar
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    LOL, yep

  6. #6
    bad tempered old c@&t wabbit's Avatar
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    Quote Originally Posted by REV308
    Fire it up, run it at about 2500 rpm for 15-20 min, everyone has a different way of doing it, but thats how i've done mine and they have all been good.
    that's pretty much what i do,but make sure you change the oil afterwards

    before you start the engine, ensure you have cam lube on the lobes. oil selection used to be important, but they've taken the zinc out of it, so it's not as good.

    cams have to be run in a lot gentler than they used to be
    If a man says something in a forest, and his wife isn't there to hear him................is he still wrong?

  7. #7
    254RWHP boat anchor EVL253's Avatar
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    u can get special lube to add to your oil for cam run in's nowadays
    11 second E85 bottle fed boat anchor

  8. #8
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    Do all the above, except the holding it flat for 10 minutes! The main thing is here is that you dont let the engine idle, oil splash at idle is insufficent to ensure adequate lubrication during cam break in. The break in can be done in a couple of sessions if things get too hot, it helps to run a hose onto the radiator. Make sure that everything is ready to run to minimise cranking before start up, timing and carby tune in the right ball park. l also like to slip a couple of extra mufflers onto my tail pipes to keep the neighbours happy.

  9. #9
    Part of the furniture vlcalais5Ltr's Avatar
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    Holding it flat for 10 mins? The bloke probably wants a laugh when he sees one of your pistons fly to the moon, I ran my motor at 2000-2500 for 20 mins giving it a blip of the throttle here and there pretty much waht the others have said, ive had no dramas since
    she's RUF N' TUF..

  10. #10
    casual poster LC-3080's Avatar
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    i recently ran in a cam last week, just idle the carby up so it sits on 2000rpm to 2500rpm and fire her up and make sure u have oil pressure, u can shut her down n do it again and again as long as the cam is ran in for 20 mins total..then let it come down to idle...ran mine in with no exhaust at 6pm hehehe..

  11. #11
    Casual Smoker V8ME's Avatar
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    are new lifters absolutly vital for a new cam, do old ones wreck the cam on run in because iv'e heard of people using old ones and not having a problem.

  12. #12
    casual poster LC-3080's Avatar
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    Quote Originally Posted by V8ME
    are new lifters absolutly vital for a new cam, do old ones wreck the cam on run in because iv'e heard of people using old ones and not having a problem.
    with a 308 the cam lobe and the lifter do not line up perfectly, so the lifter in time can wear a groove from the cam lobe. therefore with a new cam the will not have the same pattern that is worn on the old lifter.
    old lifters have been worn in for the original cam and that cam only....

  13. #13
    casual poster LC-3080's Avatar
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    so yes i believe they are vital

  14. #14
    Do you ever leave? WB5LTR's Avatar
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    should you prime lifters before slotting them in. like soking in them in oil over night.

  15. #15
    casual poster LC-3080's Avatar
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    with the last two motors i have primed the lifters, if u have the time its a good practice cause your not waiting as long to get oil in the top end.

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