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new head bolts required?

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    #1

    new head bolts required?

    Hey, I was wondering is it absolutely needed to replace the head bolts when removing the head from the engine?
    _____________________________
    91 Accord F22B
    Tags: None
    #2
    it is HIGHLY recommended as the original head bolts tend to stretch. Stretched headbolts = improper head gasket seal. Improper seal = oil and coolant mix. Mixture = ARP head bolts are fine to re-use since they do not stretch after bein installed and removed.



    edit: sorry i was bored. But i think you get the point
    Last edited by chrischhorn; 04-16-2010, 09:29 PM.

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      #3
      It is recommended by some. I have re-used Honda head bolts on any regular head gasket job that I've ever done. Unless the manual states that they are to be replaced.

      ARP bolts stretch as well, they have a stretch limit and ARP recommends that they only be re-used 3 times.

      Unless your are planning on going with a 13:1 or higher compression ratio or running a 400whp turbo setup. OEM Honda head bolts will do just fine. But for the extra piece of mind you can buy a set of 200,000 psi ARP head studs.
      Last edited by GhostAccord; 04-16-2010, 09:47 PM.
      MR Thread
      GhostAccord 2.4L Blog

      by Chappy, on Flickr

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        #4
        Thanks for the input, I swapping the h23a head on to my f22b dohc the are the same head, but im strapped for cash as im already bought all the gasgets and seals ant time belts + the head so i already spent well over 400 bucks dont have the money to buy new ones, im only going to run on them for probably 2000 miles before i buy ARP bolts and swap them can i torque them a little over spec , since it is 72 flbs can i go to like 75 to be safe or just torque them to spec?
        _____________________________
        91 Accord F22B

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          #5
          No that is not neccessary. Make sure to clean the old bolts and then soak them overnight in clean motor oil. Also make sure the threads in the block are as clean as you can get them, compressed air is great for this. If you don't have access to compressed air a can of CO2 or carb/throttle body cleaner with the the straw on it will work. After everything is clean, lube the treads of the bolts with engine oil and tq to the recommended Honda specs.
          Last edited by GhostAccord; 04-16-2010, 10:16 PM.
          MR Thread
          GhostAccord 2.4L Blog

          by Chappy, on Flickr

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            #6
            thanks, another question if i may, i bought a used head with about 70,000 miles on it, 8 of the exhaust valves have a hard corrosion on them, would it be ok to use sand paper to remove the corrorsion, ive all ready pressure wash the head with degresser and used carb cleaner to clean the ports, this corrosion is only thing keeping this head from looking like it only has 10,000 miles on it.
            _____________________________
            91 Accord F22B

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