Hemi oiling top end

Discussion in 'PSI Superchargers Tech Questions' started by John byob, Apr 13, 2021.

  1. John byob

    John byob Member

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    hi wanted t know how the set up works t keep ur rockers and tips oiled so u don’t have t take off ur valve covers each race. Low blown deal with a wet sump? Thx guys. PS anybody do anything t the lifters as well?
     
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  2. vwsamba

    vwsamba Member

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    The search bar above will get you lots of good info. You could cut the cam groove deeper or run external lines but you should be checking lash all the time anyways so pre lube still works best
     
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  3. John byob

    John byob Member

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    yes thx, but kinda making the motor a low blown bracket deal fr 1200 hp? PS I tried looking fr articles through search but couldn’t find the right words t get t the right infr needed?
     
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  4. vwsamba

    vwsamba Member

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    Search pushrod or burnt pushrod etc
     
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  5. td3829mk

    td3829mk Member

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    Check lash after every pass. If you don’t want to pull valve covers during a race weekend, sell the hemi and get something else.

    these motors are extremely maintenance intensive. Don’t be lazy.
     
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  6. John byob

    John byob Member

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    I just recall my bud having his rockers and push rods bringing oil t the top end?? But that was 12 years ago and thought they have upgraded that system?
     
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  7. td3829mk

    td3829mk Member

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    Yes sir, rockers have oilers. Some push rods have them some don’t. I’ve run Trend tool steel push rods that have oiler holes and I’ve run Manton push rods that were solid, and have seen no change on how the push rods or adjusters look. You control the amount of oil that goes to them via the restrictors. There are 2 on each side of the block, .085 each is a good starting point.

    We lube the push rod tips with moly grease prior to the first start of the day. No issues.
     
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  8. John byob

    John byob Member

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    . Ohh ok cool thx
     
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  9. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    if you are going to run old parts there are no ways around pulling valve covers to inspect. Reid makes rockers for a number of applications including older 426 fuel heads. The only way you are going to be able to not pull the covers is self oiling adjusters. Intake rockers can usually be modified for this upgrade but you will need a newer style exhaust rocker to have self oiling on the exhaust.
     
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  10. John byob

    John byob Member

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    . Ohh ok thx will how about oil spray bars under the covers?
     
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  11. MaineAlkyFan

    MaineAlkyFan Active Member

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    Pull the covers. Two years ago #2 lash was tight after a qualifying pass. We set at .010 hot. Was around .006. Didn't feel right so we leaked it.... This what we found when we pulled the head.

    [​IMG]

    [​IMG]

    There is an easy $2K saved by pulling the covers.

    Chris Saulnier - Team Tigges
    Mechanic Falls, Maine
     
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  12. John byob

    John byob Member

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  13. td3829mk

    td3829mk Member

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    Like Chris stated, pulling the covers is the easiest way to tell if something isn’t right. For example, lost high gear last weekend at the shift and motor went to 10k, adjuster came loose and bent a push rod. Which naturally led to a lifter replacement on pure grounds of preventative maintenance. If I didn’t pull the valve covers, I’d have fixed high gear and ran it which would’ve been a much more expensive end to the weekend.

    Not trying to beat this subject up, but can’t stress enough the importance of at least pulling them to inspect after every pass.
     
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  14. John byob

    John byob Member

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    ALL good tips guys thx
     
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  15. Winr

    Winr Member

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    FWIW...I had a pushrod/adjuster issue with a set of Veny heads with stage V rockers. The cup or adjuster would blue/tear up in only a few runs. I replaced the adjusters with some Manton pcs with a thru hole and the problem went away.
     
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  16. John byob

    John byob Member

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    did ur rockers have piling holes? Thx
     
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  17. Winr

    Winr Member

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    Yes, the distance from rocker to cup was also correct to allow the oil to get to the cup/ ball interface. You don't need a lot of oil to keep it lubed and the thru hole provides enough. In addition we have been putting oil in the adjuster broach (hex) every time the VC come off.
     
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  18. John byob

    John byob Member

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    . How many times does ur v cover come off?? Every pass? Thx
     
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  19. Winr

    Winr Member

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    As long as everything is OK , usually at the shed prior to an event, then once or twice during. Mind you I'm only bracket/testing and conditions will dictate. Also we are bumping up the boost and fuel so covers more than likely will be off every pass until I get a false sense of stability.
     
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