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  • Users: macquari
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  1. macquari

    Low or high frequency induction hardening of 4140

    Hello all I am trying to find out the best method for induction hardening 4140. The material is thru hardened 30hrc of 76mm to 100plus diam.Required surface hardness is 52to 55hrc to a depth of 7mm/14mm diam. We have 2 induction hardeners 1 is a low frequency up to 100mm diam and the second...
  2. macquari

    Ford 2litre (pinto) engine

    I was asked the question about the viability of a 2litre ford engine if turbo'd for a rally car.I have my doubts with the crank and was wondering if anyone has modified these engines previously and what problems they encountered.
  3. macquari

    engine reconditioning

    I was wondering how the engine reconditioning industry is going in the states. In Australia the cost of reco engines for pre 90's cars is catching up to the market value creating more "mechanical" write offs.We are finding the viability of a lot of alloy heads is dropping due to softening and...

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