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Engine Bolt Kit For 225 V6

Discussion in 'Early CJ5 and CJ6 Tech' started by BMoney, Nov 15, 2021.

  1. Nov 15, 2021
    BMoney

    BMoney New Member

    Orange County, CA
    Joined:
    May 31, 2021
    Messages:
    45
  2. Nov 15, 2021
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2021 Sponsor

    East Tennessee
    Joined:
    Feb 8, 2021
    Messages:
    644
    Why?
     
    fhoehle likes this.
  3. Nov 15, 2021
    timsresort

    timsresort Member 2021 Sponsor

    South Lake Tahoe CA
    Joined:
    Jan 22, 2014
    Messages:
    456
    I have always replaced the timing cover bolts with stainless if I had it apart. For 40 bucks, this looks good. And I bet the 231 kit works fine for a 225. Can't think of anything that would be different.
     
  4. Nov 15, 2021
    Keys5a

    Keys5a Sponsor

    Florida Keys
    Joined:
    Jan 23, 2014
    Messages:
    3,423
    Keep in mind, most stainless bolts are only Grade 2, whereas the original bolts are Grade 5. The exception for stainless bolts are those made by ARP which likely exceed Grade 5 strength.
    -Donny
     
    fhoehle likes this.
  5. Nov 15, 2021
    timsresort

    timsresort Member 2021 Sponsor

    South Lake Tahoe CA
    Joined:
    Jan 22, 2014
    Messages:
    456
    Did not know that, I always thought they were harder, not that you need it for valve cover bolts. But a quick search, unless I'm reading this wrong looks to be grade 8?

    Comparison chart for international steel grades for stainless steel bolting’s
    Grades

    European Number

    ASTM grade

    UNS

    British standard

    DIN

    304

    1.4301

    ASTM A 193 Gr B8

    S 30400

    BS 970

    X 5CrNi1810

    304 L

    1.4306

    ASTM A 320 Ge B8

    S 30403

    BS 970

    X 2CrNi1911

    316

    1.4401

    ASTM A 193 Gr B8M

    S 31600

    BS 970

    X 5 CrNiMo 17 13 2

    316 L

    1.4404

    ASTM A 320 Ge B8M

    S 31603

    BS 970

    X 2 CrNiMo 17 13 2

    310

    1.4841

    ASTM A 479

    S 31000

    BS 970

    X 12 CrNi 25 21

    310 S

    1.4845

    S 31008

    BS 970

    X 12 CrNi 25 21

    410

    1.4006

    S 41000

    BS 970

    X 10Cr13

    431

    1.4057

    S 43100

    BS 970

    X 20CrNi172

    316S31

    1.4401

    ASTM A 193 Gr B8M

    S 31600

    BS 970

    X 5 CrNiMo 17 12 2
     
  6. Nov 16, 2021
    Jeepenstein

    Jeepenstein Me like Jeep..

    North Central FL
    Joined:
    Jun 15, 2003
    Messages:
    1,813
    Most of your off the shelf stainless stuff is pretty soft, that's ok for low stress stuff like valve covers and intake manifold bolts etc..
     
    fhoehle likes this.
  7. Nov 16, 2021
    44bz

    44bz Member

    Oregon City OR
    Joined:
    Jul 30, 2018
    Messages:
    82
    I used the ARP water pump/timing cover kit for a Buick 350 when doing my 225.
     
    Andrew Theros likes this.
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