1. EXPECT DELAYS! We'll be performing some routine system updates this week. Plan for some intermittent site outages. Sorry for the inconvenience. If you notice anything broken, post a thread in the Site Feedback forum please.

1g head and 2g head?

Posted by AMPPRC, Mar 24, 2010
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. AMPPRC

    AMPPRC Proven Member

    DSM Profiles:
    1
    Joined:
    Sep 30, 2008
    Posts:
    104
    Likes Received:
    0
    Desoto, Missouri
    are the valves, spring, lifters, valve guides all interchangeable with 1g heads and 2g heads?
     
    #1
  2. Gasolinebaptism

    Gasolinebaptism Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 3, 2010
    Posts:
    348
    Likes Received:
    0
    Kennewick, Washington
    Likely interchangeable.
    Not 100% on that though.
    The 2g has a better head.
     
    #2
  3. Red97Eclipseboy

    Red97Eclipseboy Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 3, 2004
    Posts:
    754
    Likes Received:
    3
    Chicagoland, Illinois
    Do me a favor. Go on Welcome To Extreme PSI and look at the applications and part numbers for DSM heads according the parts in question. You'll find the answers you're looking for. And you'll have done it on your own! Yay! Good for you!
     
    #3
  4. dented_coffee

    dented_coffee Proven Member

    Joined:
    May 14, 2009
    Posts:
    510
    Likes Received:
    10
    West Branch, Michigan
    2g head is better. 1g has a way better intake ports (more air = more power). 2g. now i cant stop laughing and im starting to cry a lil. but anyway your answer is yes all (cams,valves, springs, guides) are interchangable. a 1g head can be modified to work on a 2g blockas well.
     
    #4
  5. viperlp01

    viperlp01 Supporting Vendor

    DSM Profiles:
    1
    Joined:
    Oct 9, 2006
    Posts:
    2,119
    Likes Received:
    25
    Kalamazoo, Michigan
    When you get done laughing can you show me proof to why you think that a 1g head makes more power? I dont know why people are going from 1g heads to 2g heads recently if 1g heads are better especially people that are racing.. I think you are alittle confused with the (more air=more power) comment.. Why would a 2g head allow any less air? I would rather have an intelligent answer..
     
    #5
  6. Red97Eclipseboy

    Red97Eclipseboy Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 3, 2004
    Posts:
    754
    Likes Received:
    3
    Chicagoland, Illinois
    It's been proven a 2g makes gobs of power and has better velocity. And un-ported at that. A guy named Kiggly comes to mind.
     
    #6
  7. Fabian

    Fabian Proven Member

    DSM Profiles:
    1
    Joined:
    Sep 5, 2008
    Posts:
    293
    Likes Received:
    0
    Elizabethtown, Pennsylvania
    man o man some of these sarcastic little answers are really funny. Guys, just answer the OP's questions and leave it at that. There have been so many little battles in so many threads on here lately. it's getting cluttered with so much crap.
     
    #7
  8. Red97Eclipseboy

    Red97Eclipseboy Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 3, 2004
    Posts:
    754
    Likes Received:
    3
    Chicagoland, Illinois
    That's because all the questions can be solved in 1 minute worth of searching. I for one, will not enable laziness. God forbid I encourage someone (while being a boner) to do something on their own. All this spoon-feeding is old.
     
    #8
  9. BogusSVO

    BogusSVO DSM Wiseman

    Joined:
    Jul 1, 2009
    Posts:
    5,282
    Likes Received:
    79
    Pensacola, Florida
    yes the parts to swap from a 1g head to a 2g head

    if guides are needed, just buy new ones, and have a decent shop install them, a Valve job will need to be done at this point too

    http://www.dsmtuners.com/forums/newbie-forum/341218-how-change-valve-guides-4g63t-head.html

    changing guides is not as simple as it may seem, if not done correctly you can damage the guide bore and ruin the head
    Also the guide bore may be streched and the use of an oversized guide will be needed
     
    #9
  10. dented_coffee

    dented_coffee Proven Member

    Joined:
    May 14, 2009
    Posts:
    510
    Likes Received:
    10
    West Branch, Michigan
    Dark Lightning
     
    #10
  11. SBR Joe

    SBR Joe Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 9, 2007
    Posts:
    1,081
    Likes Received:
    3
    Butler/Indiana, Pennsylvania
    What that link doesnt show is the increase in CFM per cylinder due to more velocity and less flaws in the casting from the 2g head compared to a 1g.

    2g head out performs 1g head stock for stock. Plain and simple. Off topic i know, i just had to jump in haha.
     
    #11
  12. dsmusmc

    dsmusmc Proven Member

    Joined:
    Oct 1, 2007
    Posts:
    325
    Likes Received:
    0
    Alliance, Ohio
    More volume=more air=more time to fill. Nothing wrong with a 2G head in fact the only thing wrong is not going with one. The smaller ports (which arnt that much smaller) give greater velocity which gives you more off boost power and slightly quicker spool up. And no a 1G head cant be modified to fit a 7 bolt because theres no need to the holes for the head studs already fit its the 2G head the need the holes opened up 1mm. Let me know when your done laughing ill get you a coloring book.

    Someones got it.:rocks: Dont forget about Joe at SBR or Curt Brown doing it as well. Contact either of them they are willing to tell you about there experience with a 2G head and the difference they have noticed.
     
    Last edited: Mar 26, 2010
    #12
  13. SBR Joe

    SBR Joe Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 9, 2007
    Posts:
    1,081
    Likes Received:
    3
    Butler/Indiana, Pennsylvania


    Or me! :D

    Wonder why i swapped out the 6 bolt head for a 2g head on the 14b car were building....hmm.
     
    #13
  14. 91stocker

    91stocker Proven Member

    DSM Profiles:
    1
    Joined:
    Jan 15, 2010
    Posts:
    1,767
    Likes Received:
    10
    Vassar, Michigan
    I dont think its necessarily the port size is it, but more the port design, with the 2g head being more of a direct shot at the valves and the 1g head hitting a corner first.
     
    #14
  15. dsmusmc

    dsmusmc Proven Member

    Joined:
    Oct 1, 2007
    Posts:
    325
    Likes Received:
    0
    Alliance, Ohio
    :ohdamn: I just read through that thread yesterday.

    Both has something to do with it. The port size makes a big difference with the velocity but the 2G head also as a much better design with air flow all together.

    Bigger isnt always better. If that was the case I would be running around with a big block chevy with all the retarded hillbillys in my area.
     
    #15
  16. SBR Joe

    SBR Joe Proven Member

    DSM Profiles:
    1
    Joined:
    Feb 9, 2007
    Posts:
    1,081
    Likes Received:
    3
    Butler/Indiana, Pennsylvania
    bingo!
     
    #16
  17. dented_coffee

    dented_coffee Proven Member

    Joined:
    May 14, 2009
    Posts:
    510
    Likes Received:
    10
    West Branch, Michigan
    the only thing stopping me from saying what i really wanna say is the moderators. this isnt bash time. im a 1g man and i stay strong with my 6-bolt. maybe the flow path is better on the 2g head but to my understanding is that the 1g head has had the most availability for performance options like the throttle bodys beeing bigger from the factory. im just saying. so if you still wanna continue to walk funny like u have sumthing up your azz. go right ahead. your just a high school drop out living in your parents basement. your a cyber bully. i have better things to do then argue with everyone whos just trying to put a fellow dsm'r down. ALL THAT REALLY MATTERS IS THAT WE BOTH RUN A 4G63 IN OUR CARS. if you dissagree then reply but send a pm and not posting to get new members jumping in on the convo. they dont need to come to this site and see all of this going on and make them think its ok. then they get booted or they get put down and hurt there feelings as well.
     
    #17
  18. dsmusmc

    dsmusmc Proven Member

    Joined:
    Oct 1, 2007
    Posts:
    325
    Likes Received:
    0
    Alliance, Ohio
    Really? WTF
    Say what you want tough guy I can handle it. Sorry not a high school drop out you need a deploma to get into the Marine Corp and I have my own house so no basement for me just use there garage for the DSM sense I don have one and dont trust the neighborhood I live in. For someone claiming im a drop out your grammer is sh** so maybe you need to shut your mouth and read the rules. Maybe if you wouldnt have gave a retarded reply I wouldnt have gave a sh**ty comment. Thats why I only gave info to help others instead of just an opinion and how I know its not bullshit is because I have talked to guys like Kiggly and Brown who have proven it. Your right we are all DSMers so lets get our head out of are ass and work together giving TRUE info and start boosting.

    PS: Sorry if I hurt your feelings.
     
    #18
  19. dented_coffee

    dented_coffee Proven Member

    Joined:
    May 14, 2009
    Posts:
    510
    Likes Received:
    10
    West Branch, Michigan
    my feelings wernt hurt at all. im just a caring person and was tyred of beeing bashed. if i wanted to fight i would of stayed in the MMA. i graduated and im in college right now for my masters in automotive. yes im only 20 years old and im still learning myself. im done with this situation. im not here to make enemys im here to help and be helped.
     
    #19
  20. 420a-t

    420a-t Proven Member

    DSM Profiles:
    1
    Joined:
    Jun 13, 2005
    Posts:
    558
    Likes Received:
    3
    Idaho Falls, Idaho
    You can put a 1g head on a 2g without any other modification, although I would advise to get a different IM.

    And the headstuts are totally dependant on which block is being used. You also don't have to bore out the headstud holes to do it like someone previously stated.
     
    #20
  21. dsm-onster

    dsm-onster DSM Wiseman

    DSM Profiles:
    1
    Joined:
    Jul 11, 2004
    Posts:
    8,218
    Likes Received:
    67
    Bloxom, Virginia
    The 6bolt block has larger head bolts and more than a few report having to widen the bolt holes for it to be properly installed, key word properly. . . Some have not. But also remember that the head receives oil from one of those holes (farthest left on the radiator side). If it's a tighter fit, then you're likely impeding oil flow to the head: lifter tap, turbo oiling issues, possibly throwing rockers, valve float is possible because the lobe will strike the rocker instead of ramping up the lift. . .
     
    #21
  22. 1995gsx20g

    1995gsx20g Proven Member

    Joined:
    Mar 4, 2008
    Posts:
    667
    Likes Received:
    5
    Huntington stat, New_York
    2g head ftw!!

    also for some reason that dark lighting link also doesn't think my 2ga has a cam angle sensor hmm..
     
    #22
  23. 420a-t

    420a-t Proven Member

    DSM Profiles:
    1
    Joined:
    Jun 13, 2005
    Posts:
    558
    Likes Received:
    3
    Idaho Falls, Idaho
    Learn something new everyday! When I put on my 1g head I never found this information anywhere, and I looked for a long time.

    Thanks for the info
     
    #23
  24. IceMinion

    IceMinion Proven Member

    Joined:
    Feb 24, 2006
    Posts:
    94
    Likes Received:
    4
    Maple Grove, Minnesota
    Everybody, chill out, The 2G head is superior to the 1G head for about 85% of the powerband, -BUT- it doesn't matter because the 4g63 is the king of 4 cylinders, the difference is no greater then 10% and I have been in many 400AWHP+ 4G63 cars with 1G heads.

    Something to be interested in and to look into for both heads is back-cutting the valves, huge improvements for both heads if backcut properly.

    The valves, valve guides, and valve seals are all the same, do not spend $$ on the 1mm oversize valves, waste

    /Thread
     
    #24
  25. beating4g63s

    beating4g63s Proven Member

    Joined:
    Oct 31, 2004
    Posts:
    332
    Likes Received:
    1
    port arthur, Texas
    OMG can you guys get a grip, and focus on what the post was meant to be, which is the valvetrain be interchangeable, man I wish defiant was back or at least a replacement that would stop post like this.


    To the OP yes they are interchangeable, I honestly can't think of one part that will not work from changing one to another.
     
    #25

Share This Page