Page 1 of 3 123 LastLast
Results 1 to 25 of 53

Thread: Time to let the cat out of the bag. DCOE manifold.

  1. #1


    Join Date
    Jul 2002
    Vehicle
    a pile of lawn ornaments
    Location
    Newtown, CT
    Posts
    5,782

    Time to let the cat out of the bag. DCOE manifold.

    Hey guys, so I have to admit, I've been holding out on you guys.

    After nearly 10 years of my searching, e-mailing, calling, visiting shops, etc, and many other peoples hard work and persistence, there is finally a production DCOE manifold made specifically for the A20, and at the correct angle for the orientation in our cars.

    Here's some pics of the first and only one in existence at the moment. I wanted to wait and let everyone know once I had the chance to install this and test it for real, but it's not entirely fair because I have no idea how long it'll take me to get mine running.

    The manifold is a sand-cast 6061 Aluminum manny that used a base stock of a B18, but the flanges have been milled down on both sides to achieve the proper angle without having the full angle cut on only one side (which would have caused too much air disturbance).

    The brand: Rowland Manifolds. http://www.manifolds.co.za/
    You can get them from Extrudabody here in the US, or order direct from Rowland (they are located in South Africa). I would suggest ordering direct as Extrudabody tacks on a margin for profit, which I can't blame them for. Rowlands prices are extremely fair (almost too low to believe), and the quality of the casting is second to none for a sand-cast. It's not light, but weight on a manifold that's got to be strong enough to hang a set of $1200 carbs without fear of breaking is something I'm willing to sacrifice.

    I worked with Rowland (the owner) over the course of months to get this done, and it's finally got a done stamp on it.





    Last edited by markmdz89hatch; 03-11-2009 at 01:36 PM.
    -Mark D.




  2. #2

    carotman's Avatar
    Join Date
    Jul 2000
    Vehicle
    89 Accord LX/B20A | 87 Accord Hatch "S" Stock | 94 Civic Hatch CX
    Location
    Montreal South Shore
    Posts
    9,984

    Re: Time to let the cat out of the bag. DCOE manifold.

    Nice these are sexy!

    http://pages.videotron.com/omus
    3geez member since July 12 2000

    I need these parts!
    https://www.3geez.com/forum/showthread.php?t=67742

  3. #3

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: Time to let the cat out of the bag. DCOE manifold.

    Sweet man! If you wanna loan me those Webers, I'll be more than happy to test it out on my B20A!!! That's MUCH nicer looking than my DCOE manifold. Is it for 40's or 45's? How much are we looking at here?
    Last edited by 2ndGenGuy; 03-04-2009 at 08:05 AM.

  4. #4


    Join Date
    Jul 2002
    Vehicle
    a pile of lawn ornaments
    Location
    Newtown, CT
    Posts
    5,782

    Re: Time to let the cat out of the bag. DCOE manifold.

    40's or 45's will work just fine. If i'm not mistake, this will also work with 48's.

    No idea on current pricing. He use to list it on his site, and at that time (last Sept ish) he didn't have any US dealers, so I purchased direct from him. We also had worked out a different price due to all of the R&D he put into it, and because it was the first of a new offering.
    -Mark D.


  5. #5

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: Time to let the cat out of the bag. DCOE manifold.

    Man his website is total intake pr0n.

    Dual 38 intake for a V6 with ramhorns!!!


    And he's got a good listing of interesting manifolds as well! Twin sidedraft manifolds and Toyota throttle body adapters for looks like B16 and B18s. Not that this DCOE manifold can't be used for Weber and Weber-style throttle bodies! Very cool!

  6. #6


    Join Date
    Jul 2002
    Vehicle
    a pile of lawn ornaments
    Location
    Newtown, CT
    Posts
    5,782

    Re: Time to let the cat out of the bag. DCOE manifold.

    yeah, he'll also do a custom cut on the carb flange of our manifold in order to adapt early Toyota ITB's if someone wanted to do that. I was going to have him do another one, but to fit those 'yota itb's, but funding fell short, and whatever I had, I wanted to put toward something I was actually going to use.
    -Mark D.


  7. #7
    2.0Si User cubert's Avatar
    Join Date
    Feb 2003
    Vehicle
    2012 Civic si, old bikes.
    Location
    NH
    Posts
    3,074

    Re: Time to let the cat out of the bag. DCOE manifold.

    damn man...that is some cool stuff.


    Cant wait to see it installed

  8. #8
    3Geez Veteran Rendon LX-i's Avatar
    Join Date
    Apr 2003
    Vehicle
    86 Honda Accord sedan B-series
    Location
    Selah, Washington, United States
    Posts
    6,435

    Re: Time to let the cat out of the bag. DCOE manifold.

    thats just sick....


    200+ ALL MOTOR LS VTEC

  9. #9

    AccordB20A's Avatar
    Join Date
    Sep 2005
    Vehicle
    1987 Honda Accord 2.0Si
    Location
    Stratford, New Zealand
    Posts
    7,407

    Re: Time to let the cat out of the bag. DCOE manifold.

    much less bullshit than the stock carbs haha

  10. #10

    2oodoor's Avatar
    Join Date
    Jun 2006
    Vehicle
    86 LX JDM B20A
    Location
    Georgia-lina
    Posts
    9,062

    Re: Time to let the cat out of the bag. DCOE manifold.

    this looks interesting, the air horns and dual linkage

    nice efforts Mark!
    John beat me to it, but since I am closer I would be glad to test this

  11. #11

    Vanilla Sky's Avatar
    Join Date
    Apr 2002
    Vehicle
    1999 Penalty Box
    Location
    Palatka, Florida, United States
    Posts
    8,932

    Re: Time to let the cat out of the bag. DCOE manifold.

    Sucks, I sold my DCOEs to buy my current 3gee.

  12. #12

    87roach's Avatar
    Join Date
    Mar 2007
    Vehicle
    87 Hatch
    Location
    Summerland, B.C.
    Posts
    1,629

    Re: Time to let the cat out of the bag. DCOE manifold.

    That is sooooo nice and clean, DAMN! Props again mark on the hard work to get these beauty's, hell if I wasn't efi I would surely get one...
    Andrew.

    My hatch build thread(started in winter of 07).

  13. #13

    Vanilla Sky's Avatar
    Join Date
    Apr 2002
    Vehicle
    1999 Penalty Box
    Location
    Palatka, Florida, United States
    Posts
    8,932

    Re: Time to let the cat out of the bag. DCOE manifold.

    Yeah, those things look killer. I may go with some DCOE throttle bodies in the future.

  14. #14

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: Time to let the cat out of the bag. DCOE manifold.

    Quote Originally Posted by 87roach View Post
    That is sooooo nice and clean, DAMN! Props again mark on the hard work to get these beauty's, hell if I wasn't efi I would surely get one...
    *cough* throttle bodies *cough*

  15. #15

    87roach's Avatar
    Join Date
    Mar 2007
    Vehicle
    87 Hatch
    Location
    Summerland, B.C.
    Posts
    1,629

    Re: Time to let the cat out of the bag. DCOE manifold.

    My god yes, that would be amazing.. but alas there are no injector porties
    Andrew.

    My hatch build thread(started in winter of 07).

  16. #16

    AccordB20A's Avatar
    Join Date
    Sep 2005
    Vehicle
    1987 Honda Accord 2.0Si
    Location
    Stratford, New Zealand
    Posts
    7,407

    Re: Time to let the cat out of the bag. DCOE manifold.

    Quote Originally Posted by roodoo2 View Post
    this looks interesting, the air horns and dual linkage

    nice efforts Mark!
    John beat me to it, but since I am closer I would be glad to test this
    nah johns cars manual so it will actually be cooler lol

  17. #17

    2ndGenGuy's Avatar
    Join Date
    Jan 2005
    Vehicle
    1981 Accord Hatchback, 1984 Accord Sedan
    Location
    Seattle, WA
    Posts
    9,697

    Re: Time to let the cat out of the bag. DCOE manifold.

    Quote Originally Posted by 87roach View Post
    My god yes, that would be amazing.. but alas there are no injector porties


    They're right there.

  18. #18
    3Geez Veteran lostforawhile's Avatar
    Join Date
    Dec 2002
    Vehicle
    86 hatchback, 1990 Lincoln Towncar
    Location
    nowhere GA
    Posts
    15,401

    Re: Time to let the cat out of the bag. DCOE manifold.

    yes that is a good price, you have no idea how much work it is to build something like that until you've done it. now you are going to post up a bunch of pictures of how he adapted the ports over to the round ports correct? and what do you mean by air disturbance? i just milled off the manifold at the correct angle and tig welded on the heavy plate the other manifold bolts too,i don't see an air disturbance problem.

  19. #19
    3Geez Veteran Civic Accord Honda's Avatar
    Join Date
    Aug 2006
    Vehicle
    1995 Civic/ 1988 CRX
    Location
    Tehachapi Ca
    Posts
    13,103

    Re: Time to let the cat out of the bag. DCOE manifold.

    fucking titays

    1988 Honda Accord LX-i Coupe 123k miles.

  20. #20


    Join Date
    Jul 2002
    Vehicle
    a pile of lawn ornaments
    Location
    Newtown, CT
    Posts
    5,782

    Re: Time to let the cat out of the bag. DCOE manifold.

    Quote Originally Posted by lostforawhile View Post
    yes that is a good price, you have no idea how much work it is to build something like that until you've done it. now you are going to post up a bunch of pictures of how he adapted the ports over to the round ports correct? and what do you mean by air disturbance? i just milled off the manifold at the correct angle and tig welded on the heavy plate the other manifold bolts too,i don't see an air disturbance problem.
    Sure I'll post up pics of that too. Just give me a day or so and it'll be done.

    as for the angles...

    When talking to a few old skool shops up here that have done custom manifolds, and bringing them my twm manifold (fits perfect, but no angle) all three shops that used to do carbs, and still do, all said that they would prefer not to cut the angle just on one side of the runners and just reweld the flange at the correct angle as it would be too much of an angle on just one side, and instead to correct the angle by milling the runners on both sides and rewelding the flanges back on. So if trying to accomplish a 12* cut, they would take 6* off each side rather than the full 12* from one side. Not saying anyone is right or wrong, but just saying what a number of shops (unrelated to each other) and Rowland suggested be done to accomplish the proper angle.

    In this case, the runners were not cut, because he was able to get the manifold cast with a very thick flange so he had enough material to mill each flange down the 6* (ish) degrees in order to get the carbs to sit at the proper tilt when installed on the motor. Same idea though.
    -Mark D.


  21. #21

    2oodoor's Avatar
    Join Date
    Jun 2006
    Vehicle
    86 LX JDM B20A
    Location
    Georgia-lina
    Posts
    9,062

    Re: Time to let the cat out of the bag. DCOE manifold.

    Quote Originally Posted by AccordB20A View Post
    nah johns cars manual so it will actually be cooler lol
    matter of opinion, but I do have a five speed DX remember I have two modded 3 gens

  22. #22
    3Geez Veteran MessyHonda's Avatar
    Join Date
    Feb 2006
    Vehicle
    89 LX-i(5speed)
    Location
    Bay Area
    Posts
    22,201

    Re: Time to let the cat out of the bag. DCOE manifold.

    looks good now slap it on that ported and polished head

    1989 Honda Accord LX-i
    B18c1 swap since 7/2011
    175whp and 132tq
    Redzone tuned

  23. #23

    87roach's Avatar
    Join Date
    Mar 2007
    Vehicle
    87 Hatch
    Location
    Summerland, B.C.
    Posts
    1,629

    Re: Time to let the cat out of the bag. DCOE manifold.

    Aye, thanks for shovin' me foot in me' mouth.

    Hmm.. I will have to consider this as another option.
    Andrew.

    My hatch build thread(started in winter of 07).

  24. #24
    LXi User L3G10N's Avatar
    Join Date
    Aug 2002
    Vehicle
    1986 accord hatchback S B20A JDM / 1998 Accord LX Coupe
    Location
    Princeville, Quebec
    Posts
    964

    Re: Time to let the cat out of the bag. DCOE manifold.

    ohhhh!!! Carotman told me to come here to check this out!! Can't wait to know the price. You can bet that I am a buyer!

    My Baby; Honda Accord 86 S, B20A JDM
    My Daily; Honda Accord 08 EX-L, K24Z3
    My 86 custom build thread

  25. #25
    LX User 3rd Party's Avatar
    Join Date
    Jan 2009
    Vehicle
    1987 Honda Accord LX-i (4dr)
    Location
    Boise, ID
    Posts
    396

    Re: Time to let the cat out of the bag. DCOE manifold.

    Quote Originally Posted by 2ndGenGuy View Post


    They're right there.
    what website can i get those from?? i'd like to convert to individual throttle bodies, but i'm worried about computer management and MAP sensor nonsense
    1987 Honda Accord LX-i (A20A3) (179k)
    79-whp, 103-wtq (Performance Solutions)

    "...if you type, 'Google' into Google you'll break the internet..."

Similar Threads

  1. Replies: 5
    Last Post: 09-08-2009, 10:41 AM
  2. DCOE manifold help
    By myaccord7 in forum Performance
    Replies: 19
    Last Post: 04-22-2004, 11:05 AM
  3. NEED DCOE manifold
    By TWOLOUDNPROUD in forum Trading Post
    Replies: 8
    Last Post: 12-15-2003, 05:38 PM
  4. dcoe manifold
    By 89AccordHatch in forum 3geez Accords
    Replies: 8
    Last Post: 10-04-2003, 12:49 PM
  5. anyone want to make me a dcoe manifold?
    By 2old_honda in forum Performance
    Replies: 7
    Last Post: 12-18-2002, 01:53 AM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
This website uses cookies
We use cookies to store session information to facilitate remembering your login information, to allow you to save website preferences, to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.
     
Links monetized by VigLink