Torx Injector Bolts

Discussion in 'Mazdaspeed 3 General Discussion' started by JTOetjen, Sep 27, 2020.

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  1. JTOetjen

    JTOetjen Greenie N00B Member

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    So...

    Chased down all the vac. leaks I had and during a short jaunt, engine started running lean again. Working on removing injectors to track down potential fueling issue, but previous folks torqued the bolts down to god knows what. The last bolt I have to get out is firmly stuck. I've beat the Jesus out of it with a hand impact, no avail. even after ~a week of getting soaked in penetrant. Broke down and threw the bit on an air impact -- broke the bit. I'm a few steps away from deciding it just needs to be drilled out.

    Before I go that far with it I was wondering if anyone happened to know the specs of the bolt so I can search for a replacement, preferably not of the torx kind, to throw on there when putting everything back together.

    Thank you, once again, for the help guys.
     
  2. SharksInSpace

    SharksInSpace Planets and shit. Silver Member

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    converting the torx to studs and nuts is pretty common. screenshot yanked from another website.

    Capture+_2020-09-27-18-35-19.png
     
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  3. jsmith

    jsmith Silver Member

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    Also, you'll need to cut off the conical washers from the OEM bolts.
     
    jsmith, via a mobile device, Sep 27, 2020
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  4. Awafrican

    Awafrican Moderator Gold Member

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    Last edited: Jan 4, 2021
  5. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    Easter Bunny, via a mobile device, Jan 5, 2021
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  6. Awafrican

    Awafrican Moderator Gold Member

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    This one is the one that has the flat part
    https://www.belmetric.com/spherical...p-16000.html?zenid=kcel1bcccogs9niqdbs01692m3

    If shipping wasn't 35 usd to me I'd be very willing to be the ginney pig and just order them all to see
     
    Awafrican, via a mobile device, Jan 5, 2021
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  7. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    But I think the tapered portion should poke out not be inset
     
    Easter Bunny, via a mobile device, Jan 5, 2021
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  8. Awafrican

    Awafrican Moderator Gold Member

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    Agree some people have said it's just a simple Bellville washer which makes sense
     
    Awafrican, via a mobile device, Jan 5, 2021
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  9. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    Does anyone have a set of injector washers laying around for comparison?
     
    Easter Bunny, via a mobile device, Jan 5, 2021
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  10. jsmith

    jsmith Silver Member

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    I think I do.
     
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  11. jsmith

    jsmith Silver Member

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    .709" OD. Thickness at OD is .050".
    .278" OD on the bolt (so a call it .300" ID on washer). Thickness at ID is .150".
     
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  12. Meicalnissyen

    Meicalnissyen Platinum Member

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    I get the sentiment, but stainless may not be able to do that clamping load
     
  13. Slowspeed6

    Slowspeed6 Greenie N00B Member

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    I would say go with majinspeed a kit. Def a great kit and I am happy to support those who have put in the work to help out the platform. Can’t go wrong with it.
     
    Slowspeed6, via an iPhone, Jan 5, 2021
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  14. Awafrican

    Awafrican Moderator Gold Member

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    Sure but it's 75$ plus shipping to me from the USA... If I'm looking at this correctly o may he right and then we on MSO have a cheaper solution that doesn't re use OEM washer. He figured it out and is turning a good profit on them which I don't blame him for but still.
     
    Awafrican, via a mobile device, Jan 5, 2021
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  15. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    Can you grab a pic?
     
    Easter Bunny, via a mobile device, Jan 5, 2021
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  16. jsmith

    jsmith Silver Member

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    You want caliper pics, or a close enough like below?

    IMG_20210105_205646.jpg
     
  17. Awafrican

    Awafrican Moderator Gold Member

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  18. rodney@majinspeedcustoms

    rodney@majinspeedcustoms Approved Vendor

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    I sell kits that are a4 stainless components custom designed for our application. You can hit me up on MajinSpeed Customs FB and IG pages. Graveyard Performance also stocks them.
     
    rodney@majinspeedcustoms, via a mobile device, Jan 6, 2021
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  19. Meicalnissyen

    Meicalnissyen Platinum Member

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    Handy to have data
     

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  20. Awafrican

    Awafrican Moderator Gold Member

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    Ended up getting the Majinspeed kit (your kit) from graveyard performance as I was ordering other stuff too. Fastenal wouldn't sell to me...

    To those looking honestly the effort that's put Into this custom kit is wonderful, just buy this dudes kit it works wonderfully is it cheap nope but so far I'd buy it again having the stud and nut combo is so easy to torque and even uninstall and reinstall.

    Good product
     
    Last edited: May 28, 2021
    Awafrican, via a mobile device, Apr 26, 2021
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