Knowledgebase: GENERAL ENQUIRIES
I have a VT ecotec V6 manual and have a comp stage 2 cam kit, double row timing chain, standard size upgraded pushrods, crow cam hydraulic lifters, stock rockers and comp reusable rocker bolts, LS1 springs, ported heads and manifolds to match. I have trie
Posted by MACE Support on 30 April 2018 12:21 PM
To give you an idea as to some possible causes, in no specific order, please refer to the list below. *Spun bearing *Low oil pressure *Low engine oil viscosity used *Insufficient lifter crush *Exhaust leak *General engine noise being transmitted via extractors. Please note that it's not uncommon to find that extractors magnify valve train noise, which is made worse when stiffer valve springs are used. For further insight about this problem, please refer to the link below. http://forums.justcommodores.com.au/mace-engineering/180051-cause-ticking.html

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