Where can I get Head Bolts from?

Discussion in '2-Stroke Engines' started by StrontiumEthics, Sep 13, 2008.

  1. StrontiumEthics

    StrontiumEthics Motored Bikes Sponsor

    Where can I get engine head bolts from? I have a revolutiion cycles bottom end, and a dax 70cc head. I need a bolt that fits into the Revolution cycles bottom end.
     

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  2. 6mm or 8mm allthread rod. Avail at Ace Hardware......
     
  3. mralaska

    mralaska Member

    None of the hardware stores in my area carry metric allthread so I had to order from http://www.mcmaster.com/ but while I was there I picked up a ton of other stuff I needed. I had no sooner clicked the confirmation button when cust service called to inform me they coud not ship one of the items to a residential address, but everything else showed up in a few days.
     
  4. Mountainman

    Mountainman Active Member

    it depends on which hardware store we go to
    thank goodness down the hill
    our hardware store carries almost every type made -- it's a country thing

    machine shops can also be a happy surprize
    went in to my buddies machine shop a few times needing little things
    he puts them on with a smile -- no charge -- meet one asap -- great friends !!!

    Ride That Thing - Mountainman
     
  5. LabDude661

    LabDude661 New Member

    I recently talked to a buddy of mine that is a motorcycle mechanic and he told me that the allthread is a bad idea. The little tappered head at the base of the threads on the stock head bolts is there for a very good reason. Apparently that point is a known weak point on all head bolts in all engines and as a intuitive fix, the weak point of the bolt was made thicker. Now I know that motoredbikes and motocycles are two different animals but he also told me that with the allthread he went through 4 feet of the stuff in one year and after replacing the head bolts with stock tapper centered bolts, he hasn't had a problem in 5 years. I just replaced all 4 of my head bolts with new ones from bicycle-engines.com. I think the set of 4 was like 4 bucks or something. I also got net locking washers and new M6 nuts. They got it all to my super quick too. The head bolts also stopped the air leak that I had around my head gasket and gave me another 2 mph on my top end.
     
  6. Skyliner70cc

    Skyliner70cc Active Member

    Been using all thread for 3.5 years with no problems even with torque up to 20 ft-lbs.
     
    Last edited: Sep 13, 2008
  7. Bronzebird

    Bronzebird Member

    How much all thread rod is needed to replace on the 70cc HT. I want to buy material before untorqing the head. 8mm?
     
  8. Pablo

    Pablo Motored Bikes Sponsor

    I comes in meter lengths. You'll need about 20".

    It could be 6mmX1.0, or 8mmX1.0, or 8mmX1.25
     
  9. Lorcher

    Lorcher New Member

    Don't forget to use thread locker.
     
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