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  1. #1
    casual poster STOKESY77's Avatar
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    Cool Dura-Bond cam bearings VS 304

    Hi all,

    I'm in the middle of doing a 355 using a VS block and just wanted to know the Dura-Bond part # for cam bearings. I was looking at HO-2SX2 which state .002" oversize but have heard other people say undersize? Which one for better oil pressure?

    Cheers, Stokesy

  2. #2
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    The .002" is "undersize" and better for oil pressure. However I had to mix and match std and undersize to get the clearances right. Every holden block seems to be different in this regard.

  3. #3
    casual poster STOKESY77's Avatar
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    Thanks did you clock them at 2 o'clock position when u installed them?

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    4 o'clock for me and my machinist agreed. Cam is pushed down by the valve springs. Get the oil in just before that load goes on, where the clearance is minimal. (less bleed off) #1 you have to align with the hole at 11 0'clock unless your block has the groove around behind the #1 bearing. (early blocks I believe) Also dependent if you have done the oiling mod behind the bearing on a non grooved block.

  5. #5
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    If you want a better bearing, I use the calico coated set No. HOP-2SX2T .002" under size as per red taxi.

  6. #6
    Senior Member 46Crab's Avatar
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    Quote Originally Posted by AED View Post
    If you want a better bearing, I use the calico coated set No. HOP-2SX2T .002" under size as per red taxi.
    Rod, what is the benefit of the calico coating?

  7. #7
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    What's calico? Are they still durabond? I remember calico being the backing for curtains!

  8. #8
    casual poster STOKESY77's Avatar
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    Found this info -

    Product Description
    Performance Cam Bearings
    Part Number
    100-HOP-2SX2T
    Brand
    Durabond
    Stock Status
    Drop Ship From Mfg

    The high performance all-round cam bearings offer more than double the fatigue strength of conventional bearings, withstand racing spring loads, and maintain the excellent surface characteristics of Babbitt. Micro-Babbitt is a very thin layer of lining which reduces the microscopic deflections that occur to a bearing when loaded and thus increases fatigue life.

  9. #9
    casual poster STOKESY77's Avatar
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    Found this info -

    The high performance all-round cam bearings offer more than double the fatigue strength of conventional bearings, withstand racing spring loads, and maintain the excellent surface characteristics of Babbitt. Micro-Babbitt is a very thin layer of lining which reduces the microscopic deflections that occur to a bearing when loaded and thus increases fatigue life.

    Some type of coating of the bearings.

  10. #10
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    Manufacturers have been teflon coating bushings for a long time now.
    Durabond seem to have started doing it in recent years and have started supplying transmission bushings as well with the same or similar coatings.

    Some manufacturers brand them as Kryptonite or Duralife. There are plenty of them out there.

  11. #11
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    Good luck getting a US company to 'drop ship' to Australia. I'm sure a lot of Yanks think Australia is a town in Texas...........

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    Quote Originally Posted by GtoGeoff View Post
    Good luck getting a US company to 'drop ship' to Australia. I'm sure a lot of Yanks think Australia is a town in Texas...........
    That is their preferred method.
    Right now a particular American company cant keep up and there aren't enough planes in the air as us Aussies are buying so much at the moment.
    The Ports are blocked up and there are delays all over the place.

  13. #13
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    Call Precision they sell the coated bearings.

  14. #14
    Part of the furniture gtrboyy's Avatar
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    The ports being blocked up is crock of shite...we're sending out more empty containers than what is coming in.

    Either manufacturers behind on schedules or yet to start again if they do at all.

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    Quote Originally Posted by gtrboyy View Post
    The ports being blocked up is crock of shite...we're sending out more empty containers than what is coming in.

    Either manufacturers behind on schedules or yet to start again if they do at all.
    Perhaps up there but not down here.
    We have containers full of Transmissions, transmission parts and engines that we should have received by now, they are sitting there waiting for all the other containers that were meant for Sydney to be dealt with.
    When you drive over to Footscray down here there are more than twice the normal amount of containers.

    Apparently containers bound for Sydney are being sent to Melbourne and then sent up on road and rail due to industrial action in Sydney.
    Who knows if that's the truth, the ships been and long gone. I just want my stuff......

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