Results 1 to 24 of 24

Thread: ARP Head Stud Sizes?

  1. #1

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    ARP Head Stud Sizes?

    Does anybody know where to get a listing for ARP head stud sizes? All that I can find on their site is their catalog with part numbers and about 5 applications. It would be nice if they listed the length, thread, etc. I would like to get some ARP studs or bolts before I redo the motor in the hatch.

    Honda's website says it's a 10x112 bolt. I know 10mm is the OD of the threads, and 112mm is how long the shaft is.

    Even a nice listing of stock bolts would be nice. The OEM parts listing is pretty damn vague. I'd hate to have to send one in to match it up after I pull it out...



  2. #2
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 2ndGenGuy View Post
    Does anybody know where to get a listing for ARP head stud sizes? All that I can find on their site is their catalog with part numbers and about 5 applications. It would be nice if they listed the length, thread, etc. I would like to get some ARP studs or bolts before I redo the motor in the hatch.

    Honda's website says it's a 10x112 bolt. I know 10mm is the OD of the threads, and 112mm is how long the shaft is.

    Even a nice listing of stock bolts would be nice. The OEM parts listing is pretty damn vague. I'd hate to have to send one in to match it up after I pull it out...
    I think that part number is 90005-671-003
    10 is the diameter, 125 the length, and the thread in milimeters is 1.25.
    EDIT: The length is 112 milimeters.
    Last edited by 1GCustomAccord; 03-25-2010 at 10:04 AM.
    So many reasons why
    I won't be sending postcards
    From Paraguay

  3. #3

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    So the 10mm diameter... is that the same as an M10 bolt? Could I just call ARP and ask them for an M10 stud that's 112mm long w/ extra length for the nut on top?
    Last edited by 2ndGenGuy; 03-25-2010 at 10:14 AM.

  4. #4

    Ichiban's Avatar
    Join Date
    Jan 2005
    Vehicle
    82 Honda Accord B20A, 76 Honda XL 175, 04 Honda Foreman ES, 83 Toyota shortbox 4x4
    Location
    North of You.
    Posts
    2,091

    Re: ARP Head Stud Sizes?

    Should be able to send them a drawing with overall length, length of lower and upper threads, thread pitch and size. Get them to send you nuts, too.
    ICHIBAN!
    "Now, even more better!"

  5. #5

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    I'm not sure how long the lower threads are. Anybody have any bolts sitting around they could measure? I used to have a huge bag of them, but I'm not sure where it disappeared to. I would just send them a whole bolt if I could find the damn things. Would it hurt for the threads on the new bolts to be longer than the threads in the block?

    Don't I want the studs to be long enough to bottom out in the block? I assume that would mean they need to be longer than the bolts themselves, since those shouldn't bottom out, but merely tighten on the cylinder head... Or am I way off?
    Last edited by 2ndGenGuy; 03-25-2010 at 12:09 PM.

  6. #6
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 2ndGenGuy View Post
    So the 10mm diameter... is that the same as an M10 bolt? Could I just call ARP and ask them for an M10 stud that's 112mm long w/ extra length for the nut on top?
    The "M" designation stands for metric, as explained here, http://euler9.tripod.com/bolt-database/22.html

    The length is measured from the end of the thread to the base of the head, not the entire length of the bolt.

    You can show them this picture:

    Thread size: M10x1.25 x 112 mm
    Head: Double hex
    Strength: Unknown, maybe is 10.9, not sure about that.

    Last edited by 1GCustomAccord; 03-25-2010 at 12:46 PM.
    So many reasons why
    I won't be sending postcards
    From Paraguay

  7. #7

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    Ah man perfect!! Thanks so much for your help!!

  8. #8
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Attention, you need to use the correct washers on those bolts, so they dont bottom out.
    The original measure is: 23x11x2.3
    PS: You are wellcome
    So many reasons why
    I won't be sending postcards
    From Paraguay

  9. #9

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    Buh so if the head is milled, do I need a thicker washer?

  10. #10
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 2ndGenGuy View Post
    Buh so if the head is milled, do I need a thicker washer?
    Sure, if you want add to the washer the amount of milling done, thats only needed if the milling is big, lets say, 0.3 mm or more...maybe more. I never had problem even with very milled heads.
    Can you tell how much your head have been milled?
    Last edited by 1GCustomAccord; 03-25-2010 at 01:33 PM.
    So many reasons why
    I won't be sending postcards
    From Paraguay

  11. #11
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Well..this is interesting.
    I just performed a test: I installed the head in the motor, WITHOUT the head gasket and WITHOUT the washer, and i was able to FULLY thread in the bolt untill the head was firmly pressed in position.
    Note that i only inserted one screw, not all of them, so to make sure i guess that all the screws must be tested this way, but i think i can say as the Mythbusters says: That myth is false.
    So many reasons why
    I won't be sending postcards
    From Paraguay

  12. #12

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    Cool, so no worries about bottoming them out pretty much? I imagined that they would have left lots of leeway in there. I'll go through my receipts tomorrow when I get home and see how much they milled. They also decked the block too.

  13. #13
    2.0Si User mushroom_toy's Avatar
    Join Date
    Oct 2006
    Vehicle
    1986 Honda Accord LX-i-1991 Toyota Pickup
    Location
    Gainesville, GA
    Posts
    3,300

    Re: ARP Head Stud Sizes?

    That headstud looks the same as the A20 one, Ill measure one of mine, and if theyre very close or the same then you can just use the miata arp headstuds.
    1986 Honda Accord Lx-i

    ~~NGK~~Silvania~~MSD~~Pioneer~~MSW~~Bosch~~DC Sports~~
    115WHP 116WTQ

  14. #14

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    ^^ Thanks man! It's all good though, I tried to compare online already and they're definitely different. The A20 is 11x140 or something like that. I was really hoping they would be the same. Your build thread totally reminded me about the head studs!

  15. #15
    LXi User 79cord's Avatar
    Join Date
    Oct 2006
    Vehicle
    79 Accord hatch, 89 CR-X SiR, '74 Z360 h/top, '81 prelude, '65 S600
    Location
    Melb, Aust.
    Posts
    808

    Re: ARP Head Stud Sizes?

    Wasn't all that extra spiraling Honda added down the length of the stud supposed to have been introduced to help them stretch a little to accommodate overheating expansion.
    Is it used on "normal" aftermarket headstuds?

  16. #16
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 79cord View Post
    Wasn't all that extra spiraling Honda added down the length of the stud supposed to have been introduced to help them stretch a little to accommodate overheating expansion.
    Is it used on "normal" aftermarket headstuds?
    Did you confirmed that fact? I always tought that the spiral in the middle is to "pump" dirt out when you unscrew the bolt, as the extra spiral is inversed.
    So many reasons why
    I won't be sending postcards
    From Paraguay

  17. #17

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    I always heard they were there to reinforce the bolt so that it won't stretch.

  18. #18
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 2ndGenGuy View Post
    I always heard they were there to reinforce the bolt so that it won't stretch.
    Interesting fact, as the shop manual says nothing about replacing the bolts when reinstalling the head.
    Maybe they were designed to be used several times without need replacing.
    So many reasons why
    I won't be sending postcards
    From Paraguay

  19. #19

    Ichiban's Avatar
    Join Date
    Jan 2005
    Vehicle
    82 Honda Accord B20A, 76 Honda XL 175, 04 Honda Foreman ES, 83 Toyota shortbox 4x4
    Location
    North of You.
    Posts
    2,091

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 1GCustomAccord View Post
    Maybe they were designed to be used several times without need replacing.
    Yes they are. Torque To Yield bolts can be distinguished by the torquing sequence. (these are the non-reusable ones) TTY bolts will be torqued to a specific value, and then rotated an additional amount, ie 3/4 turn. Normal, reusable bolts will be torqued to a value, usually in stages, and left there.

    Always remember to measure reusable bolts for excessive stretch, and never torque a dry fastener.
    ICHIBAN!
    "Now, even more better!"

  20. #20

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by Ichiban View Post
    Always remember to measure reusable bolts for excessive stretch, and never torque a dry fastener.


    Hmm! Don't think I did this. We may be onto something.

  21. #21

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    I e-mailed ARP today. Got a response back in a few hours (Those guys rock!)

    You should be able to use kit # 208-4305 that kit has (10) 10mm studs with a overall length of 5.700” the kit also has nuts and washers
    Turns out they are head studs for a D16Y engine! Freakin' sweet!

  22. #22
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Quote Originally Posted by 2ndGenGuy View Post
    I e-mailed ARP today. Got a response back in a few hours (Those guys rock!)



    Turns out they are head studs for a D16Y engine! Freakin' sweet!
    Pics???
    So many reasons why
    I won't be sending postcards
    From Paraguay

  23. #23

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: ARP Head Stud Sizes?

    Don't has them yet. I will post pics when I get them. Just ordered them today.

  24. #24
    LX User 1GCustomAccord's Avatar
    Join Date
    Jun 2008
    Vehicle
    79´Accord,83´Lude,71´Nova coupe,83´Pontiac 6000,69 Mustang coupe,and many more rusted crap...
    Location
    PY
    Posts
    350

    Re: ARP Head Stud Sizes?

    Bumpy! No picture yet?
    So many reasons why
    I won't be sending postcards
    From Paraguay

Similar Threads

  1. Replies: 34
    Last Post: 08-16-2022, 06:11 PM
  2. 5 stud hub
    By PeterNtheWolf in forum Suspension/Wheels/Tires/Brakes
    Replies: 0
    Last Post: 12-07-2010, 07:42 AM
  3. Cam Stud?
    By Rendon LX-i in forum Suspension/Wheels/Tires/Brakes
    Replies: 1
    Last Post: 05-24-2005, 06:59 AM
  4. Stud Replacement
    By KoNEY in forum 3geez Accords
    Replies: 1
    Last Post: 07-28-2004, 02:38 AM
  5. FuelRail Stud!!
    By newtuner in forum 3geez Accords
    Replies: 1
    Last Post: 01-14-2004, 11:37 AM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
     
Links monetized by VigLink