1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

New LMA's with Forced Induction

Discussion in 'Forced Induction' started by amadeuscr, May 22, 2008.

  1. amadeuscr

    amadeuscr Member

    Messages:
    172
    Likes Received:
    2
    Joined:
    May 13, 2007
    I ordered lost motion assemblies from hondaautomotiveparts.com and they didn't send 14820-P30-010 , they sent 14820-PCB-305, I talked to them , and they said that they upgraded the lma's and everytime that you order 14820-p30-010, you will get the new ones, I don't know if they will work at all , and if they are good with forced induction ,,, I took a pic , take a look:

    [​IMG]
    [​IMG]
     
    Last edited: May 22, 2008
  2. YBLEGAL

    YBLEGAL Regular Member w/ Cheese

    Messages:
    2,762
    Likes Received:
    36
    Joined:
    Aug 9, 2006
    Location:
    NW Indiana
    hmmmm very interesting.

    in for the answer, as i'll be changing my P30 B16's LMAs soon as well!!

    looks like they changed the piston/cylinder absorbsion device to a spring. i would whole heartedly assume that would keep them from sticking (the main reason people replace em).
     
  3. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    I got PCB-003 ones that I've been trying to get rid of(H22 ones). They're suppose to be stiffer but require shims/washers.
     
  4. YBLEGAL

    YBLEGAL Regular Member w/ Cheese

    Messages:
    2,762
    Likes Received:
    36
    Joined:
    Aug 9, 2006
    Location:
    NW Indiana
    so K2e2vin, some honda LMAs are actually springs?

    the only ones i've ever seen are pictures of 14820-P73-J01 which look like what's at the bottom of this guy's cup of oil...
    [​IMG]
     
  5. YBLEGAL

    YBLEGAL Regular Member w/ Cheese

    Messages:
    2,762
    Likes Received:
    36
    Joined:
    Aug 9, 2006
    Location:
    NW Indiana
    OP, i just want to let you know, LMAs have nothing what so ever to do with forced induction. If you could explain your logic on how you think they can be related, please let me know.

    LMAs cushon the VTEC rocker arm when VTEC is not engaged.

    cam lobe profile and engine speed are the only 2 things that could relate to it's function. with turbo, you generally dont need to raise the redline. for the most part, I think even stock ITR LMAs are fine for increased engine speed and higher lift cam lobes.
     
  6. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

    Messages:
    28,465
    Likes Received:
    228
    Joined:
    Sep 30, 2002
    Location:
    Dallas / Fort Worth, TX
    Yup, most people upgrade to the OEM ITR LMAs when upgrading to a higher lift cam. It's a "forgotten" mod that most people don't think about.
     
  7. amadeuscr

    amadeuscr Member

    Messages:
    172
    Likes Received:
    2
    Joined:
    May 13, 2007
    I was thinking about the stress , I wanted to ask , cause I have nothing in mi mind that tells me that was not going to work , I thought I was missing something , but look like Im not ! I had to ask !:)
     
  8. YBLEGAL

    YBLEGAL Regular Member w/ Cheese

    Messages:
    2,762
    Likes Received:
    36
    Joined:
    Aug 9, 2006
    Location:
    NW Indiana
    Well dont get me wrong, it might be an issue of weather or not those are a direct fit still. I dont know that. Just stating that there arn't upgraded aftermarket LMAs available or necessary for built motors.
     
  9. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    The spring is inside ;)
     
  10. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

    Messages:
    28,465
    Likes Received:
    228
    Joined:
    Sep 30, 2002
    Location:
    Dallas / Fort Worth, TX
    The ITR LMAs are necessary for high lift cams. You don't want to crash a large VTEC lobe into the taller normal LMA and break it.
     
  11. YBLEGAL

    YBLEGAL Regular Member w/ Cheese

    Messages:
    2,762
    Likes Received:
    36
    Joined:
    Aug 9, 2006
    Location:
    NW Indiana
    very true, thanks for making that clear.

    so are these new LMAs pictured the real deal? are they indeed an upgraded part from honda now?
     
  12. K2e2vin

    K2e2vin Senior Member

    Messages:
    8,446
    Likes Received:
    92
    Joined:
    Jan 2, 2003
    Location:
    Raleigh, NC
    I'd like to know also; because the ones I have require shimming.
     
  13. amadeuscr

    amadeuscr Member

    Messages:
    172
    Likes Received:
    2
    Joined:
    May 13, 2007
    I'm confused !!!!

    well, I think I will be the lab rat ! , I will give them a shoot and try installing them to see how they work and I will let you know what's the result ! hope everything goes well !
     
  14. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    Which ones do you have, Mike? I would assume non-itr, but that's just a guess since you didn't boost.

    Then again you have amazed me with your answers before and reasons to do things a certain way so you could have the itr's. haha
     
  15. amadeuscr

    amadeuscr Member

    Messages:
    172
    Likes Received:
    2
    Joined:
    May 13, 2007
    OK people , I changed the LMA's with the new spring design, the rocker arms are tighter than before , but I still have that weird sound , it's more quiet ,, but still there ! , I will use the car a couple of days and I will adjust the valve lash again
     
  16. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

    Messages:
    28,465
    Likes Received:
    228
    Joined:
    Sep 30, 2002
    Location:
    Dallas / Fort Worth, TX
    I have the ITR LMAs. One of mine went out and I couldn't find just one... so I replaced the whole set with ITRs instead of stock B16 LMAs.
     
  17. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    Forgive the slight thread jackage...but would those work for my build, Mike?
     
  18. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

    Messages:
    28,465
    Likes Received:
    228
    Joined:
    Sep 30, 2002
    Location:
    Dallas / Fort Worth, TX
  19. Luis998

    Luis998 Honda Enthusiast

    Messages:
    2,867
    Likes Received:
    55
    Joined:
    Jan 14, 2008
    Location:
    Orlando, Florida
    Word to Big Bird. :D
     
Verification:
Draft saved Draft deleted

Share This Page