Page 1 of 7 12345 ... LastLast
Results 1 to 25 of 153

Thread: QUAD Motorcycle Carbs

  1. #1
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272

    Thumbs up QUAD Motorcycle Carbs

    I have been looking into this a bit and was wondering if anyone else had thought about it. I think that putting 4 mikuni's such as these http://cgi.ebay.com/ebaymotors/ws/eB...490062956&rd=1 or many of the others that show up on ebay would be sweet. Kinda like an individual throttle body set up. It seems like it is a lot like dual webers, except as far as i can tell mixtures are easily adjustable via several needle valves.
    Just wondering if anyone can see any problem with this or if anyone has worked with these carbs before and can offer any suggestions. Also, would 38 mm carbs be sufficient.

    Thanks for any input
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done



  2. #2
    3Geez Veteran smufguy's Avatar
    Join Date
    May 2002
    Vehicle
    10/Honda/Ridgeline
    Location
    NJ
    Posts
    7,202
    well one thing that you and i know is that it can be done, but would involve a shit load of work. I dont know if there is any emission probs in Washington (dont know why there would be any) then u would have a tougher task.

    WEll if u want brute power, this is the way to go. as in ITBs. but there are a lot of things to be custom made and i would say to start off, get urself a new manifold gasket and a thich piece of aluminum. or even u can try adapting a spare stock carb manifold to recieve these carbs. I have seen one on the CBX, but not very intrigued by it. So think about the money and time vs power for this ITB set up or the dual webber set up.

    This territory is not new, i have come across few threads about it. so hit the search and see what you find. talk to carb gods like Andy (pheydux) or Mike (A20A1) and see their input.

  3. #3

    A20A1's Avatar
    Join Date
    Sep 2001
    Vehicle
    2006 Chevy Cobalt LS
    Location
    Kaneohe, Hawaii, United States
    Posts
    88,734
    38 isn't that bad, you'd get a more resopnsive throttle then say a 45 dcoes but then you'd probably suffer some where later on as to the maximum amount of power you can get.


    There is limitations to the choke / throttle size of the carbs but no limitations to ITB's bore since it doesn't rely on pressure drop.

    I just like carbs casue you dump the ecu mess.
    - llia


  4. #4
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272
    i like carbs as well, i also am starting with a carb so i think i want to stay that way, right now i have a weber 32/36 which seems ok but i want something better, i also plan on getting a cam and header asap so once that happens i will hopefully be able to upgrade the carb system. The car sees mainly street driving and auto-x so throttle response is important to me more than wild horsepower numbers.
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done

  5. #5
    LXi User
    Join Date
    Aug 2002
    Vehicle
    1990 Honda Accord Ex 5spd.
    Location
    Knoxville, TN
    Posts
    655
    i was looking at those carbs and i dont think it would be all that terrible. What i would do is get a stock manifold. cut off the runners and keep the base. Get or find gaskets for the katana carbs and trace those on the manifold. then dremel away to make the hole match up to the new carbs. I dont know though if you are able to seperate or shrink the distance on those carbs...that would take some interesting machining or if they happen to line up even better.
    "If you were paying attention DANIEL you'd know the Nintendo's pass threw everything!"
    - Col Jack O'Neal - Stargate sg-1.

  6. #6
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272

    Talking Quad Carb Setup

    My accord started and ran today on a rack of 4 34mm mikuni carburetors. First impressions are pretty good. It needs some tuning but I think it will all pull through. I built the manifold myself its not pretty but it is functional. The only thing i have left to build is a bracket to hold my throttle cable so that it doesn't hit the hood. And i have to get a cable to run the high idle lever. Here are some pictures. Questions and comments welcome.






    Last edited by Zufer; 12-04-2006 at 08:49 PM.
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done

  7. #7
    3Geez Veteran A18A's Avatar
    Join Date
    Sep 2005
    Vehicle
    1988 Honda Vigor
    Location
    New Zealand
    Posts
    8,081

    Re: my accord has quad carbs

    lol i was just thinking bout quad carbs yesterday

    looks cool!! 1 carb per cylinder
    Last edited by A18A; 12-04-2006 at 08:50 PM.

  8. #8
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272

    Re: my accord has quad carbs

    never mind i fixed it
    Last edited by Zufer; 12-04-2006 at 08:50 PM.
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done

  9. #9
    3Geez Veteran MessyHonda's Avatar
    Join Date
    Feb 2006
    Vehicle
    89 LX-i(5speed)
    Location
    Bay Area
    Posts
    22,201

    Re: my accord has quad carbs

    looks good was your car cabrd or fuel injected...im only asking cuz of the valve cover and you dont have the damn vac box...it clears the engine bay and it makes it look clean...just scrub that puppy down and it will look hot

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

  10. #10
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272

    Re: my accord has quad carbs

    the car was carbed. The valve cover is off a prelude(so FI engine). And before these i had a weber on there so i had ditched the vacuum box a long time ago. And you are correct my engine bay does need a good cleaning. Hopefully this winter it'll happen.
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done

  11. #11
    3Geez Veteran A18A's Avatar
    Join Date
    Sep 2005
    Vehicle
    1988 Honda Vigor
    Location
    New Zealand
    Posts
    8,081

    Re: my accord has quad carbs

    i was wondering the same thing, but he does say it's a LX, and with a custom quad carb setup like that, why would you wanna put a vacuum box back on there? lol, i noticed the valve cover breather was on the other side too.

    btw, were/what did the carbs come from??

  12. #12

    bobafett's Avatar
    Join Date
    May 2002
    Vehicle
    Stock 86 Accord LXi Hatch
    Location
    Longview, WA
    Posts
    6,545

    Re: my accord has quad carbs

    you cant run motorcycle carbs on a 3g! ;-)

    glad it runs man... just gotta get that bitch tuned, and then we will see what the 282 is really capable of!

  13. #13
    3Geez Veteran AccordEpicenter's Avatar
    Join Date
    Nov 2002
    Vehicle
    1988 Honda Accord LX-i Turbo 2004 Acura TL 6 speed/navigation
    Location
    Ridin Dirty in New York
    Posts
    7,377

    Re: my accord has quad carbs

    i cant wait to see it set up and running good, carbs can make a serious difference
    429whp 362wtq A20 TURBO. A20T>*

  14. #14
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272

    Re: my accord has quad carbs

    the carbs are from a 88 honda shadow i believe... i bought them off ebay based on the size, which i guessed after reading about head flow, carb flow, and all the weber threads
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done

  15. #15

    Justin86's Avatar
    Join Date
    Sep 2002
    Vehicle
    88 Yota/ 62 Nova/ 06 Yamaha R1
    Location
    Medford, Oregon
    Posts
    5,018

    Re: my accord has quad carbs

    Yes I want to see a big cam in there!
    I'm your local R&D nut. Fabracting, welding, tuning and breaking my stuff so you don't have to.

  16. #16
    3Geez Veteran ghettogeddy's Avatar
    Join Date
    Jan 2006
    Vehicle
    88 lx sedan (R.I.P.) / 89 LX sedan(sold) / 89 lxi parts car(towed away) / 87 lxi hatch
    Location
    Antioch CA
    Posts
    9,591

    Re: my accord has quad carbs

    thats kinda like having itb's right

  17. #17
    3Geez Veteran gfrg88's Avatar
    Join Date
    Jan 2005
    Vehicle
    1986 Honda Prelude 2.0Si-T
    Location
    A Mile High.
    Posts
    4,790

    Re: my accord has quad carbs

    fuk yeah!!! 282 cam in that bitch!!!
    -Gio
    .
    .
    My E85 Turbo Build
    .
    .
    5280FEST
    .
    .

  18. #18
    LX User ilikevtecs's Avatar
    Join Date
    Jul 2006
    Vehicle
    88 LX
    Location
    Waupaca, WI
    Posts
    129

    Re: my accord has quad carbs

    god damn, almost wants to make me stay carbed!

  19. #19

    Hash_man_Se_i's Avatar
    Join Date
    Sep 2002
    Vehicle
    1988 EX-i 4dr, 1989 se-i 4dr (RIP), 1989 se-i 4dr (RIP), 2006 TSX
    Location
    Calgary, AB, Canada
    Posts
    3,816

    Re: my accord has quad carbs

    thats a pretty cool setup. Props for the work... are you not running filters on them right now?

  20. #20
    LX User
    Join Date
    Jul 2003
    Vehicle
    88 Accord LX
    Location
    Portland, OR
    Posts
    272

    Re: my accord has quad carbs

    thats for all the good comments. The 282 was sweet with my weber so i can only imagine it to be great with these witha good tune. The manifold was originally a 86/87 FI accord manifold that i choped to flange off and machined it flat and yes i used the injector ports for a vacuum log.
    Zeph Uusitalo
    Proof That Bike Carbs Work On An A20!
    Dyno'd the accord. It made 104HP 117TQ.... And blew smoke everywhere. I guess the 210K motor really is done

  21. #21
    Accord of the Year - 2009

    thegreatdane's Avatar
    Join Date
    Jan 2003
    Vehicle
    Accord 2.0i-16 '87 - Accord Aerodeck EXi '89
    Location
    Denmark/Europe
    Posts
    2,898

    Re: my accord has quad carbs

    Isnt 34mm pretty small for a 2.0L?


    Link to my 3geez garage
    • Accord 2.0i-16 '87 B20A2 DOHC 16v
    • Accord Aerodeck EXi '89 Exclusive Edition

  22. #22
    SEi User
    Join Date
    Jan 2004
    Posts
    1,396

    Re: my accord has quad carbs

    Oh at last someone finally listened to what i was saying a bit the bullit!!! I'm so pleased man glad to see you running!!!

    What you need to do next though i believe the Mikunis use weber jets so you might be able to tune them yourself best bet is to maybe take it to a bike shop to have a bash at tuning.

    But to be honest the carb size seehow you get on personally on a A20 head there a bit small especially with headwork and header, might want to find some Honda fireblade carbs they are 38mm and would work much better. But anywasy still much better than one Weber 38/38 and the inlet manifold length is great longer the better for really good torque and fuel mixture, next thing might be airbox with a hood scoop straight into the air box over the top get some ram air effect going on.

  23. #23

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

    Re: my accord has quad carbs

    looks awesome, great r&d....I hope they are big enough not to lean out at an extended runout, cause it definatley will be flowing like a mugggg

  24. #24

    Sabz5150's Avatar
    Join Date
    Apr 2002
    Vehicle
    1989 Accord SE-i coupe
    Location
    Richmond, VA
    Posts
    3,069

    Re: my accord has quad carbs

    Oooooooohh I want to go ITBs so bad!

    Excellent work, and vid/audio of engine running
    My collection: Stay tuned! (04/02/2009)

    Quote Originally Posted by bobafett View Post
    glorious!

    imagine a beowulf cluster of tho... oh wait... its sabz. how is the beowulf cluster of myth boxen treating you?

  25. #25

    shepherd79's Avatar
    Join Date
    Apr 2002
    Vehicle
    01 Civic lx auto; 03 Accord EX
    Location
    Falling Waters, WV USA
    Posts
    9,466

    Re: my accord has quad carbs

    well i want to start with CONGRATS!!!!!
    but i have a few questions:
    1. is that JBweld you used to seal all the wholes?
    2. Those runners are they PVC plastic?
    3. why did you make them so long?
    4. are you gong to use velocity stacks? You should because it will help ya with a flow, but the way it is setup now, i don' think you have enough room for them.
    5. are you planning on making better / custom manifold?
    Overall I give you two thumps up. Nice Job.
    Alex.

Similar Threads

  1. Motorcycle Carbs on a CVCC engine?
    By SylusMk2 in forum 1geez Tech & Performance
    Replies: 4
    Last Post: 09-01-2012, 07:03 AM
  2. Quad ignition coil?
    By FyreDaug in forum Performance
    Replies: 8
    Last Post: 06-17-2006, 07:41 PM
  3. Anyone wanna buy a Motorcycle?
    By TJ89Accord in forum Trading Post
    Replies: 5
    Last Post: 10-11-2003, 09:11 PM
  4. motorcycle carbs...return line?
    By sixgears in forum Carburetor Tech
    Replies: 2
    Last Post: 07-31-2003, 05:32 AM
  5. Quad T/B
    By 2Fast_Fiero in forum Performance
    Replies: 12
    Last Post: 08-25-2002, 12:02 PM

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