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Thread: Help with funny noise from RB30

  1. #11
    Legendary dom14's Avatar
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    Quote Originally Posted by slamnsam View Post
    the noise you are explaining is extremely common with rb30's in vl commodores so i assume the same would be correct in your situation. anyway here goes best bet is to pull your rocker cover, remove the rocker blocks, remove the tappets etc. give the whole lot a good soak in degreaser and blow out with compressed air and re assemble. if you still have issues it may need new lifters or have a worn cam
    Thanks mate. as soon as I finish the carby job, I'll get to the lifters and the cams, camshaft.
    Only problem I remember was, that the idiot who welded the cracks and machined the head, lost few washers that goes between valve springs, he gave replacement ones, which weren't the right thickness. So, it was putting slightly extra pressure on one or two of the springs. I can't remember which cylinder it was, but as soon as I open the rocker cover, I'll be able to see it.
    Was it a good idea to use the 'bad' washers he gave me?!!

    P.S. I had to take the head back to him again, 'cos he missed one of the cracks, a pretty obvious one. Embarrassing as it was, it was my GF who noticed the crack, 'cos I was too busy trusting the fella. I knew he was bit of a dud, but didn't have a choice 'cos there was nobody to do the job during x'mas holidays. So, the head had two lots of welding and machining in two days, but didn't have to over machine it though, 'cos I checked the thickness. What I dunno it whether the extra work has weakened head or not.
    Last edited by dom14; 2nd February 2014 at 02:42 PM.
    RB30, some 2-3 inch lift auxiliary LPG tanks
    Few more mods on the way
    http://www.worldwildlife.org/species/tiger
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  2. #12
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    This escalated quickly .... The post was about a ticking noise now your talking recon'd heads. I wouldnt bother with replacing the head until you need it mate. I just did a recon head on my RB30 patrol, the cam, rockers etc were reused but were bathed in cleaning fluid and looked mint but still tick. It is really common with RB30's,, they just get a bit sticky and tick when they open / shut. When the revs are higher there is more oil pressure around the lifters so they are better.

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    Exhaust is definitely worth looking at aswell as mentioned!

  4. #14
    Legendary dom14's Avatar
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    Ok. Cool. Thanks for the advice mate.

    Quote Originally Posted by ctaylor58 View Post
    This escalated quickly .... The post was about a ticking noise now your talking recon'd heads. I wouldnt bother with replacing the head until you need it mate. I just did a recon head on my RB30 patrol, the cam, rockers etc were reused but were bathed in cleaning fluid and looked mint but still tick. It is really common with RB30's,, they just get a bit sticky and tick when they open / shut. When the revs are higher there is more oil pressure around the lifters so they are better.
    RB30, some 2-3 inch lift auxiliary LPG tanks
    Few more mods on the way
    http://www.worldwildlife.org/species/tiger
    https://www.panthera.org/
    Cheetah Outreach

  5. #15
    Legendary dom14's Avatar
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    This problem sorted out itself without having to do much from my end. I think the cooling whether had an effect?!
    Last edited by dom14; 14th March 2014 at 12:28 AM.
    RB30, some 2-3 inch lift auxiliary LPG tanks
    Few more mods on the way
    http://www.worldwildlife.org/species/tiger
    https://www.panthera.org/
    Cheetah Outreach

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