User Tag List

+ Reply to Thread
Results 1 to 22 of 22

Thread: Bike carb selection and management

  1. #1
    Tyre Kicker

    Join Date
    Jun 2007
    Location
    chesterfield uk
    Age
    39
    Posts
    15
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Bike carb selection and management

    Hi all im after putting bike carbs on my mk3 fiesta rally car its got the mondeo 2.0 zetec installed.

    What bike carbs would best suit the engine and what management would i be best buying to run it ?

    Alot of people seam to go on about the megasquirt ?

    Thanks in advance for any information on this matter.

    I will upload some pics of the car shortly in the correct forum. thanks

  2. #2
    Mechanic

    Join Date
    Aug 2006
    Location
    old london town
    Age
    40
    Posts
    780
    Thanks
    7
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    carbs will only need ignition comtrol, megasquirt is fuel only as standard you need to upgrade it for ignition control as well

    megasquirt would be fine for fuel injection but if you only need to get ignition control then i would get something that is designed to do that, i think omex do one

    rick

  3. #3
    World Champion Decade Plus User alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    60
    Posts
    9,200
    Thanks
    167
    Thanked 446 Times in 432 Posts

    Re: Bike carb selection and management

    megasquirt will do ign std? v3 has on board drivers. also v2.2 can be used with ford edis slave module.
    ign only version is the megajolt.

    if it were me then i would ask bogg brothers about which carbs, they are the experts. The bike carbs need re jetting etc to suit car applications, they can do that also.

  4. #4
    Mechanic

    Join Date
    Aug 2006
    Location
    old london town
    Age
    40
    Posts
    780
    Thanks
    7
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by alladdin View Post
    megasquirt will do ign std? v3 has on board drivers. also v2.2 can be used with ford edis slave module.
    ign only version is the megajolt.

    if it were me then i would ask bogg brothers about which carbs, they are the experts. The bike carbs need re jetting etc to suit car applications, they can do that also.

    iv got a v3 megasquirt and i was certain that it was fuel only, and that if you wanted to do ignition you needed either msnsextra or what ever its called or the upgrade chip they do i think thats the v2.2

  5. #5
    Tyre Kicker

    Join Date
    Jun 2007
    Location
    chesterfield uk
    Age
    39
    Posts
    15
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Bike carb selection and management

    Thanks for the info

    Would this be suitable to run the bike throttle bodies?

    http://cgi.ebay.co.uk/MegaSquirt-Eng...QQcmdZViewItem

  6. #6
    Mechanic

    Join Date
    Aug 2006
    Location
    old london town
    Age
    40
    Posts
    780
    Thanks
    7
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    yeah, thats got the extra programming for some extras aswell

  7. #7
    Tyre Kicker

    Join Date
    Jun 2007
    Location
    chesterfield uk
    Age
    39
    Posts
    15
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Bike carb selection and management

    Thanks again

    does that seam a fair price to pay for the management ?

  8. #8
    World Champion Decade Plus User alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    60
    Posts
    9,200
    Thanks
    167
    Thanked 446 Times in 432 Posts

    Re: Bike carb selection and management

    the v3 has the hardware to run ignition onboard (if its been installed !), the control FIRMWARE you need to get this working is the megasquirt n spark extra code (msns-e), this is i suppose an upgrade but its simply reflashing the on board software.
    the v2.2 is an earlier version, you are thinking of the megasquirt 2 which is a chip upgrade to any model.(yes its a little confusing!)
    i strongly recomend looking here http://www.extraefi.co.uk/
    or asking bill shurviton to supply you one.

  9. #9
    Mechanic

    Join Date
    Aug 2006
    Location
    old london town
    Age
    40
    Posts
    780
    Thanks
    7
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by alladdin View Post
    the v3 has the hardware to run ignition onboard (if its been installed !), the control FIRMWARE you need to get this working is the megasquirt n spark extra code (msns-e), this is i suppose an upgrade but its simply reflashing the on board software.
    the v2.2 is an earlier version, you are thinking of the megasquirt 2 which is a chip upgrade to any model.(yes its a little confusing!)
    i strongly recomend looking here http://www.extraefi.co.uk/
    or asking bill shurviton to supply you one.

    cheers mate

  10. #10
    Pit Crew Decade Plus User Zetec_Escorts's Avatar

    Join Date
    Jul 2004
    Location
    Reading
    Age
    46
    Posts
    1,275
    Thanks
    4
    Thanked 8 Times in 8 Posts

    Re: Bike carb selection and management

    You can buy the megajolt ECU which is ignition only and works with EDIS. Should cost around £100 so nice and cheap.
    Zetec Mk 1 Escort
    Mk 2 X Pack Capri 3.0S (not a copy, the real thing)
    Mk 1 XR4i
    Mk 3a Fiesta Si

    www.zetecescorts.bravehost.com

  11. #11
    Spanner Monkey

    Join Date
    Apr 2006
    Location
    Auckland, NZ
    Age
    37
    Posts
    243
    Thanks
    2
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    so you cant fit a vacuum line up to all 4 of the inlets(4 into 1)?? how much worse does the car run with no vacuum advance?
    http://img211.imageshack.us/img211/7983/pete4as.jpg

  12. #12
    Pit Crew Decade Plus User MegatronUK's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    Jun 2006
    Location
    Durham, UK
    Age
    45
    Posts
    1,494
    Thanks
    55
    Thanked 100 Times in 95 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by retep130 View Post
    so you cant fit a vacuum line up to all 4 of the inlets(4 into 1)?? how much worse does the car run with no vacuum advance?
    Why would you want vacuum advance when you have 3d mappable ignition? The idea is you throw the distributor & cap away!

    With MS or MJ you can choose MAP or TPS (TPS generally easy to setup on DCOE's or Bike carbs) and build the ignition curve against both revs and map/tps. The MS or MJ unit works with a standard Ford EDIS control module, coil pack and plugs to give you a proper wasted spark system - you don't need a distributor any longer to tell the plugs when to fire.

    BTW, you could probably still build a balanced MAP feed using some sort of pressure reservoir from all four runners if you really wanted to.

  13. #13
    Spanner Monkey

    Join Date
    Apr 2006
    Location
    Auckland, NZ
    Age
    37
    Posts
    243
    Thanks
    2
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    so where do I find a kit/the stuff to be able to use tps(generally on bike carbs). How much all that cost Just wondering, if you need a computer to run the ignition then why not run throttle bodies in the first place?

    So in reality when people talk about bike carbs being so easy, they always forget to mention that you also need to spend a whole lot more on ignition?
    http://img211.imageshack.us/img211/7983/pete4as.jpg

  14. #14
    Mechanic

    My 1st Project
    My 2nd Project
    My 3rd Project
    Join Date
    Jan 2006
    Location
    Norfolk
    Posts
    934
    Thanks
    8
    Thanked 6 Times in 6 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by retep130 View Post
    so where do I find a kit/the stuff to be able to use tps(generally on bike carbs). How much all that cost Just wondering, if you need a computer to run the ignition then why not run throttle bodies in the first place?

    So in reality when people talk about bike carbs being so easy, they always forget to mention that you also need to spend a whole lot more on ignition?
    No you dont need to, you can still run clockwork point set up if you want.

    If you do want to run Mappable ignition linked to TPS, a lot of Late model Carbs had TPSensors as well for the bikes ignition system

    Late model R1 carbs I think had TPS

    HTH
    Dom

  15. #15
    Bodger

    Join Date
    Jun 2007
    Location
    Australia
    Age
    39
    Posts
    176
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by cr500dom View Post
    No you dont need to, you can still run clockwork point set up if you want.
    Not on a zetec

    Unless you have an extremely good reason (mega wild race cam etc) you should use MAP for load, not TPS. TPS is usually used for accel enrichment. MAP is far better

  16. #16
    World Champion Decade Plus User alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    60
    Posts
    9,200
    Thanks
    167
    Thanked 446 Times in 432 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by retep130 View Post
    so where do I find a kit/the stuff to be able to use tps(generally on bike carbs). How much all that cost Just wondering, if you need a computer to run the ignition then why not run throttle bodies in the first place?

    So in reality when people talk about bike carbs being so easy, they always forget to mention that you also need to spend a whole lot more on ignition?
    and the same applies even if you fit a free single choke carb off a skip its not a bike carb issue. tho to be honest, the only real reason to fit bike carbs is if you cant afford a good set of webbers.
    and since you ask, why dont you fit throttle bodies in the first place ??

  17. #17
    Spanner Monkey

    Join Date
    Apr 2006
    Location
    Auckland, NZ
    Age
    37
    Posts
    243
    Thanks
    2
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    main reason I would use bike carbs is the price and with sidedrafts they would hit my brake booster(mk1 escort, yeah wrong section but right topic :P) whereas I can make the manifold to fit with bike carbs(although thinking about it I could make a manifold to fit with sideys...).

    But throttle bodies prices seem too prohibitive for a young guy, plus wiring scares me and I dont think my car is good enough to qualify spending all the money on it( engine cost me 150 pound approx)
    http://img211.imageshack.us/img211/7983/pete4as.jpg

  18. #18
    Bodger

    Join Date
    Jun 2007
    Location
    Australia
    Age
    39
    Posts
    176
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Bike carb selection and management

    Use throttle bodies off a efi bike, cheap and easy.

  19. #19
    World Champion Decade Plus User alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    60
    Posts
    9,200
    Thanks
    167
    Thanked 446 Times in 432 Posts

    Re: Bike carb selection and management

    Quote Originally Posted by andrewr View Post
    Use throttle bodies off a efi bike, cheap and easy.
    well cheap anyway

  20. #20
    Spanner Monkey

    Join Date
    Apr 2006
    Location
    Auckland, NZ
    Age
    37
    Posts
    243
    Thanks
    2
    Thanked 3 Times in 3 Posts

    Re: Bike carb selection and management

    yeah but how much is a ecu and do you need bigger injectors?
    http://img211.imageshack.us/img211/7983/pete4as.jpg

  21. #21
    World Champion Decade Plus User alladdin's Avatar

    My 1st Project
    My 2nd Project
    Join Date
    May 2005
    Location
    s.wales
    Age
    60
    Posts
    9,200
    Thanks
    167
    Thanked 446 Times in 432 Posts

    Re: Bike carb selection and management

    injectors are fine and ecu is from 300 m.sq. to 600+

  22. #22
    Pit Crew Decade Plus User Zetec_Escorts's Avatar

    Join Date
    Jul 2004
    Location
    Reading
    Age
    46
    Posts
    1,275
    Thanks
    4
    Thanked 8 Times in 8 Posts

    Re: Bike carb selection and management

    Unless you have an extremely good reason (mega wild race cam etc) you should use MAP for load, not TPS. TPS is usually used for accel enrichment. MAP is far better
    The TPS is best for the driver, far better response.

    So in reality when people talk about bike carbs being so easy, they always forget to mention that you also need to spend a whole lot more on ignition?
    Even if you are using twin webbers you need mappable ignition to make the best of it. A dizzy is an old, old bit of technology that just can not cut it in the modern world.
    Zetec Mk 1 Escort
    Mk 2 X Pack Capri 3.0S (not a copy, the real thing)
    Mk 1 XR4i
    Mk 3a Fiesta Si

    www.zetecescorts.bravehost.com

+ Reply to Thread

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