Lifter went bad at the track

Discussion in 'Drag Racing' started by mashori, Dec 3, 2011.

  1. mercgt73

    mercgt73 Member

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    Going back together! (y)
     
  2. John Holden

    John Holden Member

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    I forget, did you guys pull and check all the lifters and check the lobes?
     
  3. Rick

    Rick G8I operations

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    I bet you floated the lifters. You also need to check the lobes on the cam to see if they got hammered. Going forward, "if you want it to live" I would be replacing the lifters to match the rest of your valve train and let it spin. Don't forget to recheck PTV
     
  4. daydreamer

    daydreamer Mavmenace

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    Depending on what AFR 185 head you have, the springs maybe just borderline for the staggered lift. Some AFR heads are advertised as 135# on the seat and 550 lift.As stated, ck out or better still throw new lifters in it and replace the springs with 650 springs which are 155# at the seat. this pressure wont hurt the cam or valves.jmo:)
     
  5. mavman

    mavman Member

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    Ed Curtis has a trick spring setup that will eliminate any valve float (up to a good bit of RPM). Tapered springs with little bitty titanium retainers. Good to contact him to ask. If nothing else, there's a possibility of adding a good bit of HP from 5500-up. I saw a dyno sheet once where someone had a 5.0L with hydraulic roller lifters and stock springs that came on the heads, then swapped the springs and picked up 85 HP at 6500. I do not know what the springs were. I ASSume they were tapered springs and ti retainers.

    Might be worthwhile to suggest having a REAL good look at things if the valves got bent at only 8000-ish. Either that or it was way over 8000ish. Something went haywire. Stretched rods or bolts maybe? It happens. What's the piston-to-valve clearance? How much were the lifters preloaded?
     
  6. mashori

    mashori Member

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    we did get stiffer springs installed. my engine builder didn't recommend different lifters but I will ask him again. right now I'm waiting on header bolts to arrive and I haven't even had a chance to work on the car and probably won't until next week.

    thankfully bryant's shop partner let me borrow their truck. but I REALLY miss driving the maverick.
     
  7. mashori

    mashori Member

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    after working on the engine again a little I'm motivated to finish the supercharger install. I'm actually pretty close. I have the a1000 fuel pump, bryant has the fuel regulator, I will order the fuel lines I need and then install the supercharger bracket and move the radiator forward a little and it should really be ready. Bryant and I will make our own carb hat.
     
  8. mojo

    mojo "Everett"- Senior Citizen Supporting Member

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    To move the radiator fwd won't u have to modify the core support? Wud like to see how u do it. I wud'nt mine having a little more rm between my rad /efan and water pump pulley.
     
  9. mashori

    mashori Member

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    yea bryant and I came up with some places where we can modify the support without compromising the hood latch but we'll have to see
     
  10. Reeves1

    Reeves1 Member

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  11. mashori

    mashori Member

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    bryant has been busy, I'm at work but he is making awesome progress . . .
    the new header bolts from ARP arrived, got them for $20 shipped.

    [​IMG]
     
  12. mashori

    mashori Member

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  13. mashori

    mashori Member

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    I'm uploading these as Bryant is sending me pics. . . it's like the Bryant Cam . . .

    [​IMG]

    [​IMG]

    [​IMG]

    [​IMG]
     
  14. mashori

    mashori Member

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