84 'Ceptor FUEL INJECTED in the Works

Discussion in 'Mechanics Garage' started by 84VFR700F, Aug 4, 2010.

  1. 84VFR700F

    84VFR700F New Member

    Joined:
    Jul 20, 2010
    Messages:
    11
    Likes Received:
    0
    Trophy Points:
    0
    Well i was talking to another Local guy with an 84 interceptor today and i guess he has a friend who is an engineer and they are talking about making his interceptor F.I. and not Carbed. His buddy said he could do it so after his bike is done and if everything goes smoothly, i will be getting mine done as well. I will be sure to give updates as soon as i know what route to take for this to be done.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #1
  2. Lgn001

    Lgn001 Member

    Country:
    United States
    Joined:
    Nov 11, 2007
    Messages:
    1,855
    Likes Received:
    1
    Trophy Points:
    53
    Location:
    Russian River by Ocean, CA
    Map
    That's a lot of work for a "non-FI" vehicle. Be interesting to see how it comes out. Keep us updated, please!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #2
  3. squirrelman

    squirrelman Member

    Country:
    United States
    Joined:
    Jul 27, 2006
    Messages:
    10,185
    Likes Received:
    877
    Trophy Points:
    128
    Location:
    Buffalo, NY
    Map
    Forget the engineer's dream: the project won't work properly. Won't work ! A pipe dream.

    By the time anyone finished paying for a set-up like FI on that old clunker (where many parts would need to be custom fabricated), you could buy a newer bike that's better in every way and has FI built in, not thrown together by amateurs.

    If you can't get your carbs to work right, you don't have the technical know-how to get an improvised FI working right either.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #3
  4. Pliskin

    Pliskin New Member

    Country:
    United States
    Joined:
    Jun 3, 2008
    Messages:
    3,699
    Likes Received:
    1
    Trophy Points:
    36
    Location:
    Morris County, New Jersey
    Map
    Dad? Is that you? Wrecking my dreams and demoralizing me from beyond?

    C'mon squirrel - you're a good man who's provided invaluable service to numerous members of this forum already, but ain't that a little bit harsh?

    How about just telling them "good fucking luck". Subtle, yet encouraging. Makes it a win win.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #4
  5. sgtmillhouse648

    sgtmillhouse648 New Member

    Country:
    United States
    Joined:
    Jul 30, 2008
    Messages:
    26
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Blue Grass, IA
    Map
    That's pretty cool! Definitely be something to consider for the race car. I kindof wonder how they plan on doing everything though...the hard part is finding a set of ITB's for an I4. After that, it's a really straight forward thing to do if you can figure a way to get a CPS installed on the VFR. A simple megasquirt box can be built/tuned for a song and a dance and an NA engine is a cakewalk to tune over forced induction!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #5
  6. JamieDaugherty

    JamieDaugherty New Member

    Country:
    United States
    Joined:
    Aug 26, 2006
    Messages:
    2,389
    Likes Received:
    27
    Trophy Points:
    38
    Location:
    Fort Wayne, IN
    Map
    Getting FI to work on carburated engine is not that difficult really. The Megasquirt system provides all of the control needed. All you have to do is get the appropriate sensors installed and to fabricate the injector assembly and high pressure fuel pump system. There is a decent amount of fabrication needed but the technical part is taken care of the Megasquirt.

    The biggest roadblock I've found is the fuel pump. My concern has always been the current draw of an FI pump system. A guy on the V4 BBS was doing this modification a few years back and was not worried about this. On paper there appears to be enough overhead in the charging system, but I'm skeptical. That said, I bought an R6 fuel pump a while back just in case......
     


    This site may contain affiliate links for which VFRworld may be compensated
    #6
  7. Dukiedook

    Dukiedook New Member

    Joined:
    Oct 16, 2009
    Messages:
    979
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Kansas City, USA
    Map
    Why?!?!?!?
     


    This site may contain affiliate links for which VFRworld may be compensated
    #7
  8. JamieDaugherty

    JamieDaugherty New Member

    Country:
    United States
    Joined:
    Aug 26, 2006
    Messages:
    2,389
    Likes Received:
    27
    Trophy Points:
    38
    Location:
    Fort Wayne, IN
    Map

    Why not?!?!?!?!?!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #8
  9. invisible cities

    invisible cities New Member

    Country:
    United States
    Joined:
    Oct 20, 2009
    Messages:
    2,259
    Likes Received:
    2
    Trophy Points:
    38
    Location:
    new york
    Map
    Fuel injection is an advancement in technology but I have to ask, has this upgrade been accomplished - on a First Gen - with proven results?

    On this note, aren't the Honda V4 carburetors really an excellent piece of engineering - is there really a need to switch these out for another system?

    Thx!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #9
  10. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

    Country:
    United States
    Joined:
    Oct 5, 2009
    Messages:
    7,831
    Likes Received:
    91
    Trophy Points:
    78
    Location:
    Colorado Front Range
    Map
    gotta say, if I had access to the parts and could do it with minimal investment....

    I'd do it, "just cuz I can."

    TOE put a SSSA on a 2nd gen - why? cuz it's cool and because ya can!

    It'll be original and no one else will have one.

    I say :thumbsup:

    Why do people climb ridiculous mountains? Just to say they did it.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #10
  11. invisible cities

    invisible cities New Member

    Country:
    United States
    Joined:
    Oct 20, 2009
    Messages:
    2,259
    Likes Received:
    2
    Trophy Points:
    38
    Location:
    new york
    Map
    I am totally a fan of going for it but I'm wondering why the bad press on the Honda V4 carburetors.

    Aren't they an excellent piece of engineering?
     


    This site may contain affiliate links for which VFRworld may be compensated
    #11
  12. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

    Country:
    United States
    Joined:
    Oct 5, 2009
    Messages:
    7,831
    Likes Received:
    91
    Trophy Points:
    78
    Location:
    Colorado Front Range
    Map
    You're being sensitive. I didn't read anyone say anything bad about the carbs. Only squirrel making an assumption that someone didn't know how to adjust them properly.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #12
  13. invisible cities

    invisible cities New Member

    Country:
    United States
    Joined:
    Oct 20, 2009
    Messages:
    2,259
    Likes Received:
    2
    Trophy Points:
    38
    Location:
    new york
    Map
    Not being defensive here. More I'm wondering, for my own edification, what the pros and cons are to going to a fuel injected system on a Gen 1. There are some drawbacks to making this switch, right?
     


    This site may contain affiliate links for which VFRworld may be compensated
    #13
  14. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

    Country:
    United States
    Joined:
    Oct 5, 2009
    Messages:
    7,831
    Likes Received:
    91
    Trophy Points:
    78
    Location:
    Colorado Front Range
    Map
    Like what? A proper system will adjust for the optimum mixture and burn by measuring exhaust gas, airflow, barometric pressure. The engine is no more than a pump so the pistons and valves could give a shit how the fuel mixture is generated. Provided the airflow sensor and O2 sensors are located properly and the computer map is written correctly, should work like a million bucks - but it won't make the bike worth a dollar more than stock. No one would be able to work on or service the aftermarket system if there were problems down the road. That's the only problem I see with a switch.

    Yesterday I was in an offroad jeep shop. They were telling me about putting computer controlled engines in old 50's vintage willy's jeeps. Lots of work but the orientation of the engine and some of the severe angles while rock crawling makes a float bowl fed carb problematic.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #14
  15. invisible cities

    invisible cities New Member

    Country:
    United States
    Joined:
    Oct 20, 2009
    Messages:
    2,259
    Likes Received:
    2
    Trophy Points:
    38
    Location:
    new york
    Map
    Again, really trying to learn a bit more on this topic and I am not trying to be ornery - but I would think, space requirements, weight and electrical loads would be a consideration here...though this is more raised as a question.

    I would appreciate any insight. Thx!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #15
  16. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

    Country:
    United States
    Joined:
    Oct 5, 2009
    Messages:
    7,831
    Likes Received:
    91
    Trophy Points:
    78
    Location:
    Colorado Front Range
    Map
    come on I.C., even NASCAR is finally going to FI
     


    This site may contain affiliate links for which VFRworld may be compensated
    #16
  17. invisible cities

    invisible cities New Member

    Country:
    United States
    Joined:
    Oct 20, 2009
    Messages:
    2,259
    Likes Received:
    2
    Trophy Points:
    38
    Location:
    new york
    Map
    Okay, okay...I yield...
     


    This site may contain affiliate links for which VFRworld may be compensated
    #17
  18. JamieDaugherty

    JamieDaugherty New Member

    Country:
    United States
    Joined:
    Aug 26, 2006
    Messages:
    2,389
    Likes Received:
    27
    Trophy Points:
    38
    Location:
    Fort Wayne, IN
    Map
    I don't know of anyone installing an FI system on a VF yet, but it has been done on many older (and less sophisticated) machines successfully. Fuel mileage, better idle, better throttle response, etc, etc. The list is pretty long of the advantages of FI over carbs. Carbs are crude and inaccurate. Anyone who says that carbs can do as good a job of delivering fuel as an FI system has some convincing to do. Carbs always give you trouble, and the number of parts and various modes of failure doesn't help that at all.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #18
  19. squirrelman

    squirrelman Member

    Country:
    United States
    Joined:
    Jul 27, 2006
    Messages:
    10,185
    Likes Received:
    877
    Trophy Points:
    128
    Location:
    Buffalo, NY
    Map
    Even factory-built FI systems can be problematical and need setup help like Power Commander.

    you say a couple of inexperienced dudes with an impractical idea can select the proper FI components, fabricate the necessary hardware, create the software and computer programs to make it work on an old bike and work better and more reliabily than the carbs the bike came with ??? NO way !!

    HAHA!
     


    This site may contain affiliate links for which VFRworld may be compensated
    #19
  20. tinkerinWstuff

    tinkerinWstuff Administrator Staff Member

    Country:
    United States
    Joined:
    Oct 5, 2009
    Messages:
    7,831
    Likes Received:
    91
    Trophy Points:
    78
    Location:
    Colorado Front Range
    Map
    You're making assumptions about their skill/experience level. The guy is reported to be some kind of engineer and for all we know his specialty is in FI systems.
     


    This site may contain affiliate links for which VFRworld may be compensated
    #20
Related Topics

Share This Page