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  1. #1
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    ARP Steering bolts

    OK, got me thinking about the steering bolt on my 300X, after reading the threads about bolt failures. What is the best source for the ARP steering bolts, or is there something better? I have the SeaStar Pro system.
    18 Talon/2.4 carb SOLD
    26 Deck Boat/250 Merc

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  3. #2
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    Pull it and inspect it. If in doubt get a new one from sea star. It's not very much green for peace of mind.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
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  4. #3
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    Seastar HA5822 . They sell them all over. I bought one on Amazon

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  6. #4
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    I searched the part number and there is no mention of the bolt grade … like a grade 8 with the marks on the bolt head. Do you just assume that they are all high tensile as described and hopefully not "take offs" from across the pond. Any vendor marks to look for to ensure the quality.

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  8. #5
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    They have the ARP on the top.....They are hi grade stainless similar to a gr 8.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

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  10. #6
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    Yeah, the ones I have say ARP and then they either have initials for Teleflex or Seastar as well. The standard bolt has nothing on top.

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  12. #7
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    Anyone know how to get an ARP bolt set-up for my 91 Evinrude Looper steering?

  13. #8
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    Quote Originally Posted by XstreamVking View Post
    They have the ARP on the top.....They are hi grade stainless similar to a gr 8.
    17-4 stainless maybe, like OMC V8 mount bolts?

  14. #9
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    I don't know the specs but teleflex went to the trouble of sourcing some specialty fasteners so they must be up to the job. Gr 5 is close on standard 304, 316 etc., hi-po arp would bump up to near gr 8 ?. Stainless is cold hardened so an exact relation to heat treated steel is tough. Most stainless is numbered as to how it resists corrosion, not how strong it is.

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  15. #10
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    17-4 grades are for strength not corrosion, hence why omc used them for mounting v8's

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  17. #11
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    10-4........

    83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
    We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

  18. #12
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    I found a company that does bling bolts for harleys in the usa that does custom 17-4 and other high strength fasteners.
    Very nice bunch of guys.

  19. #13
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    The problem arise's when we identify materials some by their SAE or ASTM name while others we use a Brittish or Your-peein identification. The U.S. military even uses their own system of I.D.

    What I might call a 304, 308, 316, 321, or a "630" others might call it "17-4 PH" because of it's 17% Chromium and 4% Nickel content and that it has been "Precipitation Hardened".

    For the record, any material that contains 10% Chromium or higher is considered "corrosion resistant".

    I'm not a metallurgist by any stretch. I refer to the AWS handbook when in doubt but the lower grades of stainless are Ferritic or Austenitic and have a low yield to tensile strength ratio. Higher numbered Martensitic and duplex concoctions have a higher yield percentage .. but it really takes getting into some really expensive mix's to reach that of other alloy carbon based steels.

    What is the ARP steering bolt made out of .. ???
    Heck if I know ..
    But you can bet that they did their homework on stress analysis, shock loading, yield, tensile and elongation patterns from freezing to 100+ degrees before deciding on which material to roll threads onto ..

  20. #14
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    13% for stainless

    you also have to remember what load grade 8, 10.8 metric is tested for. Steer is a sheer load not holding a crank in and some ductability is good.

  21. #15
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    Bump for a good thread.

    i recently bought a SeaStar Pro front mount h-steering. It came w- the ARP 3/8” x 1.35 INJF. Unfortunately, w- my application, the bolt is not long enough and ARP doesn’t want to sell me a longer one. Would a grade 8 Bolt be comparable to the supplied ARP bolt? Does UNF thread fit a UNJF thread?

    Thanks for any help-

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