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 DSM modification questions and discussions. Common, repetitive, and general discussions will get dumped here from other tech forums. Unless you're a Probationary member you shouldn't post threads here.

  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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    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.
     
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  3. asdfzxc

    asdfzxc Proven Member

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

    candela Proven Member

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    All 90-5/92 turbo dsm's and the g vr4
     
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  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:
     
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  6. KenTSIII

    KenTSIII Proven Member

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    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.
     
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  7. RZFD

    RZFD Proven Member

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    , Houston_Tx.
    Thanks that's all I needed to know.
     
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  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.
     
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  9. 97GSTURBO

    97GSTURBO Proven Member

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    Why would you have a 2G head on a 1G? A 6 bolt is a 1G motor.
     
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  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.
     
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  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.
     
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  12. 97GSTURBO

    97GSTURBO Proven Member

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    90-94 DSM's where 1G 6 bolt motors.
     
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  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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    I know about DSM's having 7 bolt motors in 93-94, but I'm sorry I assumed you had a 6 bolt.
     
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  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.
     
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  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.
     
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  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...
     
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  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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    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???
     
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  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
     
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  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.
     
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  22. Hobbes =^.^=

    Hobbes =^.^= Proven Member

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    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.
     
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  23. MattR

    MattR Proven Member

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    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.
     
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  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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