6 bolt vs. 7 bolt [merged] 6bolt 7bolt 6-bolt 7-bolt six bolt seven bolt

Posted by asdfzxc, Jul 9, 2002
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.

  1. asdfzxc

    asdfzxc Proven Member

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    , Edmonton
    All 6 bolt vs. 7 bolt threads are merged here.
    How do I tell if I have a 6 bolt or a 7 bolt?
    Will x part from a 6 bolt fit a 7 bolt?
    Will x part from a 7 bolt fit a 6 bolt?
    Which one is better?
    How do I swap my x bolt for an x bolt?


    What is the difference between 6-bolt and 7-bolt engines (aside from the obvious - 6 vs. 7 bolts connecting the flywheel :p )

    Is there an advantage over either of the two engines?

    Thanks,

    -Mike
    #1
  2. candela

    candela Proven Member

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    Austin, Arizona
    All the exact differences are listed at dsm.org... The main difference is the rods in the 6 bolt motors are bigger and stronger than that of a 7 bolt motor. They usually can hold an extra 30 more wheel hp.
    #2
  3. asdfzxc

    asdfzxc Proven Member

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    , Edmonton
    Which years come with 6-bolt engines?
    #3
  4. candela

    candela Proven Member

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    Austin, Arizona
    All 90-5/92 turbo dsm's and the g vr4
    #4
  5. RZFD

    RZFD Proven Member

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    , Houston_Tx.
    I was under the impression that 6-bolts were 1G's and 7-bolts were 2G's.
    I just read somewhere that there were 1G 7-Bolts. Confirm, or does this guy just not know what he's talking about cuz I sure don't? :confused:
    #5
  6. KenTSIII

    KenTSIII Proven Member

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    , Indianapolis_IN
    90-early 92 used 6bolts... late 92-99 used 7bolts. Starting at some point in 95 DSMs started using 4g63s that were manufactured in the states... & this is one of the theories behind crankwalk.
    #6
  7. RZFD

    RZFD Proven Member

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    , Houston_Tx.
    Thanks that's all I needed to know.
    #7
  8. 93laserR

    93laserR Proven Member

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    i am looking for a new block for my 93 and i have found some 6 bolt blocks for good prices, but i don't know if they will fit on my car.
    #8
  9. 97GSTURBO

    97GSTURBO Proven Member

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    , B.F.E._AZ
    Why would you have a 2G head on a 1G? A 6 bolt is a 1G motor.
    #9
  10. 93laserR

    93laserR Proven Member

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    well if u look at my name it says 93laserR. a 93 laser has a 7 bolt also. i want to put a 90-92 6 bolt block on my 93 head.
    #10
  11. L2RTSiAWD

    L2RTSiAWD Moderator

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    Well they started putting 7-bolts after april/may 92.. Yes you can have a 7bolt head on a 6-bolt block. That's what my setup will be.
    #11
  12. 97GSTURBO

    97GSTURBO Proven Member

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    , B.F.E._AZ
    90-94 DSM's where 1G 6 bolt motors.
    #12
  13. 93laserR

    93laserR Proven Member

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    thank u. that was alot better than what 97getturbo said.
    #13
  14. 97GSTURBO

    97GSTURBO Proven Member

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    , B.F.E._AZ
    I know about DSM's having 7 bolt motors in 93-94, but I'm sorry I assumed you had a 6 bolt.
    #14
  15. 93laserR

    93laserR Proven Member

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    is there anything i would need to do or would it bolt right on like it was a 7 bolt. like would it work with my tranny and everything else.
    #15
  16. L2RTSiAWD

    L2RTSiAWD Moderator

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    I belive you have to swap plugs 1 and 4 and 2 and 3. You still have a 1G coil pack so that may not be neccesary. Call www.magnusmotorsports.com and ask them they can tell you for sure.
    #16
  17. Bob Kratchet

    Bob Kratchet Proven Member

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    90-94 motors were not 6 bolt motors... As someome said above, only 90-92 were 6 bolt, they switched over to 7 bolt for the 93 and above models... however, to answer your original question, yes, that setup will work fine...
    #17
  18. 98TsiAWD

    98TsiAWD DSM Wiseman

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    94 3000GT VR-4, North_Dakota
    6bolt until 92.5 actually, 92.5+ are 7 bolt.:)
    #18
  19. eagletalon90

    eagletalon90 Proven Member

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    , tamaquaPa
    what is the difference between a 6 and 7 bolt and which is better. oh and what do i have on my car its a '90 talon nt fwd???
    #19
  20. L2RTSiAWD

    L2RTSiAWD Moderator

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    If you don't have a turbo car it doesn't matter. if yo have a 90 N/T. You either have 6-bolt N/T 2.0 or a 1.8 motor
    #20
  21. clipsegsx

    clipsegsx Proven Member

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    , hamiltonnj
    how much does it cost for a 6-bolt block and how much is it to get put in.
    #21
  22. Hobbes =^.^=

    Hobbes =^.^= Proven Member

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    , Rockland_NY
    The price varies alot. From 500-1500. Check out DSMtrader or look into JDM engines.

    The price for a swap into a 2g cost around 1100 plus another 500 or so for parts you need that are not compatible.
    #22
  23. MattR

    MattR Proven Member

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    , Connecticut
    Hey, I have a question about the difference between the 6 bolt and 7 bolt motors. I understand the 6 bolts are stronger (stronger rods i believe?), but at what point (in relation to horsepower/1320 times) does that make a difference? Like is a 7 bolt able to handle, say, 300hp, capable of doing 12/13s? The reason I ask is because i found a 93 talon turbo in the classifieds. Im not really aiming for much more than the stage 1 setup, at least not for now. Thanks guys.
    #23
  24. jw

    jw Proven Member

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    If you are looking for 12/13s car, the 7 bolt motor should be no problem at all.
    #24
  25. candela

    candela Proven Member

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    he general sense for the motors is roughly 400-450whp for 6 bolts and roughly 380-420whp for 7 bolts

    Each is very capable of running low 12's-high 11's stock
    #25

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