Used part question

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    Author Topic: Used part question  (Read 1764 times)

    Offline 72hemi

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    Used part question
    « on: October 20, 2008 - 09:59:08 AM »
    I am starting to put together the list of parts for my 340 build and want to run Harland Sharp roller rockers and a friend of mine reccomended that I consider buying a used set to save a little on the roughly $600 price tag and I was wondering what everyone's take on running used engine parts is?
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    Offline 1BADFISH™

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    Re: Used part question
    « Reply #1 on: October 20, 2008 - 10:42:38 AM »
    Quote from: 72hemi on October 20, 2008 - 09:59:08 AM
    I am starting to put together the list of parts for my 340 build and want to run Harland Sharp roller rockers and a friend of mine reccomended that I consider buying a used set to save a little on the roughly $600 price tag and I was wondering what everyone's take on running used engine parts is?

    I know some people don't like the Harland Sharp roller rockers, but my brother ran a used set in his car for about 2 years and they worked flawlessly. If they're stored properly when not on the engine I don't see the problem. Lots of people buy used adjustable rocker gear for their 340's.    :dunno:
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    Dave
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    Offline 72hemi

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    Re: Used part question
    « Reply #2 on: October 20, 2008 - 11:03:41 AM »
    The big thing I like about them is the needle bearings instead of bushings. The more friction I can eliminate from the better off I'll be.
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    1972 Dodge Challenger 340 6 Pack 4-speed
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    Offline 1BADFISH™

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    Re: Used part question
    « Reply #3 on: October 20, 2008 - 11:27:15 AM »
    Quote from: 72hemi on October 20, 2008 - 11:03:41 AM
    The big thing I like about them is the needle bearings instead of bushings. The more friction I can eliminate from the better off I'll be.

    Thats true, but its also the only thing about the harland sharp I heard people not liking, if a rocker blows, you have a bunch of tiny needles through your engine.   :bricks1:
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    Dave
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    Offline 72hemi

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    Re: Used part question
    « Reply #4 on: October 20, 2008 - 11:32:10 AM »
    True, but I don't plan on spending a lot of time at high RPM and is one reason I am concerned about buying used.
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    1972 Dodge Challenger 340 6 Pack 4-speed
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    Offline Chryco Psycho

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    Re: Used part question
    « Reply #5 on: October 20, 2008 - 12:01:13 PM »
    you od not reduce friction with Harland rockers , you still have a the film of oil that creates the resistance but the needle rollers you have far less contact area so it will wear the rocker shafts out
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    Offline 72hemi

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    Re: Used part question
    « Reply #6 on: October 20, 2008 - 12:03:28 PM »
    But don't the Harland Sharps come with hardened shafts?
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    1972 Dodge Challenger 340 6 Pack 4-speed
    1996 Dodge Viper GTS Coupe

    Offline Chryco Psycho

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    Re: Used part question
    « Reply #7 on: October 20, 2008 - 12:08:24 PM »
    all shafts are hardened , but when you reduce the load area on the shaft from 1 square inch down to a hair sized contact patch on 4-6 rollers the load on those rollers goes up dramatically
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    Offline 72hemi

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    Re: Used part question
    « Reply #8 on: October 20, 2008 - 12:17:05 PM »
    That's true. What rockers do you reccomend?
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    Offline tactransman

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    Re: Used part question
    « Reply #9 on: October 20, 2008 - 01:53:28 PM »
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    Terry-tactransman 
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    Offline Ck[FIN]

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    Re: Used part question
    « Reply #10 on: October 20, 2008 - 02:33:45 PM »
    I also thought that HS use nitration in their shafts because of the needle bearings.
    Or chrome moly, heavy walled hard chrome plated shafts.

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    Offline 72hemi

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    Re: Used part question
    « Reply #11 on: October 20, 2008 - 02:36:31 PM »
    Quote from: tactransman on October 20, 2008 - 01:53:28 PM
    Have you seen this thread?   :cheers:
    http://www.cuda-challenger.com/cc/index.php?topic=50078.0


    Yeah I have started to go through that thread. Thanks for the reminder though.  :thumbsup:
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    1972 Dodge Challenger 340 6 Pack 4-speed
    1996 Dodge Viper GTS Coupe

    Offline Chryco Psycho

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    Re: Used part question
    « Reply #12 on: October 21, 2008 - 02:46:27 AM »
    depends on the application , but Mopar or Crane iron rockers are vitually indestructable , I have used some of the Comp Pro Magnum stainless as well
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