edelbrock 7121

Discussion in 'Technical' started by comet 75, Jun 8, 2005.

  1. comet 75

    comet 75 comet 75 swap 302

    Joined:
    Nov 29, 2002
    Messages:
    176
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Quebec
    Vehicle:
    mercury comet 1975 302
    I installed my EDL-7121 performer RPM last week and see that some parts doesn't fit like water outlet for the heater the one on my old intake is to small for the hole in the new intake (see picture 1)

    what's about the other hole some kind of cacuum do I need to install the old parts that screwed ther or I just need to put plug on this hole (see pic 2 and 3)

    I bought too this carb. Motorcraft 4160 holley 600 #E4ZEYA A4H3 with conversion kit #34-6. what is about this conversion kit I read it's to be able to change the jet but don't realy understand all about it so does some body can give some more info about the carb. I bought?

    thanks
    David
     
  2. littleredtoy

    littleredtoy Seth

    Joined:
    Apr 27, 2002
    Messages:
    4,050
    Likes Received:
    15
    Trophy Points:
    162
    Location:
    North Carolina, Triangle Area
    Vehicle:
    '74 Comet GT
    David,
    You can buy adaptors for brass and steel water fittings. Try your local parts store. The
    'HELP' section usually carries a variety of inlets/outlets or should be able to get you an
    adapter to make it fit. Be careful with the threads, get the correct size.

    The outlet at the front is for the heater hose inlet, the one at the back is in fact for
    vacuum.

    Adapter for the carb I am not sure about. It could be for adapting the carb to a particular intake.

    Good luck.

    Seth
     
  3. comet 75

    comet 75 comet 75 swap 302

    Joined:
    Nov 29, 2002
    Messages:
    176
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Quebec
    Vehicle:
    mercury comet 1975 302
    sorry forgot to say that the conversion kit is to convert a 4160 to 4150 ???
     
  4. stmanser

    stmanser Looking for a Maverick

    Joined:
    Jan 4, 2005
    Messages:
    2,818
    Likes Received:
    7
    Trophy Points:
    112
    Location:
    Davenport, Iowa
    i dont see any pics.....just your web site link.....am i missing something?
     
  5. bmcdaniel

    bmcdaniel Senile Member

    Joined:
    Jul 2, 2002
    Messages:
    6,822
    Likes Received:
    681
    Trophy Points:
    318
    Location:
    York. PA
    Vehicle:
    '70 Maverick Grabber
    A 4160 has vacuum secondaries and a non-tunable secondary metering plate. A 4150 is usually a double pumper and has a secondary metering block with replaceable jets and power valve.
     
  6. comet 75

    comet 75 comet 75 swap 302

    Joined:
    Nov 29, 2002
    Messages:
    176
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Quebec
    Vehicle:
    mercury comet 1975 302
    Stmancer: no your not missing something I'm not aable to upload the pic. I'll try again may be or tomorow
     
  7. comet 75

    comet 75 comet 75 swap 302

    Joined:
    Nov 29, 2002
    Messages:
    176
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Quebec
    Vehicle:
    mercury comet 1975 302
    get it yes

    here the pic now the question is what should I do with 2 and 3 hole since I remove egr and other emission control ????

    I read the instalation sheet of the intake and they talk about dowel pin to remove Where is this dowel pins I speak french so dowel doesn't mean anything for me do I miss something???
     

    Attached Files:

    Last edited: Jun 8, 2005
  8. Grabber5.0

    Grabber5.0 Gear-head wannabe

    Joined:
    Mar 9, 2002
    Messages:
    2,199
    Likes Received:
    3
    Trophy Points:
    127
    Location:
    Kansas City, MO
    Vehicle:
    71 Grabber
    Holes 2 and 3 look like manifold vacuum ports to me. You can buy threaded pipe plugs to close off the holes in the intake you aren't using. About 8 bucks for a set of 5 from Summit in chrome, blue anodized, red anodized, or plain aluminum (i found these on their site doing a search, they are not listed in their catalog). The only things the parts store had I checked were ugly brass things, but your luck may vary.
     
  9. Scotty P

    Scotty P Member

    Joined:
    Aug 7, 2003
    Messages:
    1,130
    Likes Received:
    0
    Trophy Points:
    108
    Location:
    santa rosa, ca
    Vehicle:
    1970 Maverick
    1= Heater
    2= Temp sending unit
    3 = Vacuum Port
     
  10. comet 75

    comet 75 comet 75 swap 302

    Joined:
    Nov 29, 2002
    Messages:
    176
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Quebec
    Vehicle:
    mercury comet 1975 302
    thanks matt, but do I need these vacuum port, what is the need of these??? Do I need it??

    Thanks Scott, but I'm not sure about temp sending unit if my memory's good my temp gauge was plug at the front on driverside of the intake (see pic #4)??
     

    Attached Files:

  11. littleredtoy

    littleredtoy Seth

    Joined:
    Apr 27, 2002
    Messages:
    4,050
    Likes Received:
    15
    Trophy Points:
    162
    Location:
    North Carolina, Triangle Area
    Vehicle:
    '74 Comet GT
    #2 is not a water port. It is a vacuum port.
    #4 is for a temp sending unit.
    Plug #3 unless you need a second vacuum port.
    #1 is again to the heater core.

    Seth
     
  12. PINKY

    PINKY .....John Ford.....

    Joined:
    Mar 10, 2002
    Messages:
    9,875
    Likes Received:
    2
    Trophy Points:
    0
    Location:
    Louisville, Ky.
    Vehicle:
    1970 Ford Maverick
    correct(y)
     
  13. Grabber5.0

    Grabber5.0 Gear-head wannabe

    Joined:
    Mar 9, 2002
    Messages:
    2,199
    Likes Received:
    3
    Trophy Points:
    127
    Location:
    Kansas City, MO
    Vehicle:
    71 Grabber
    That means I was right too mister :p
     
  14. Grabber5.0

    Grabber5.0 Gear-head wannabe

    Joined:
    Mar 9, 2002
    Messages:
    2,199
    Likes Received:
    3
    Trophy Points:
    127
    Location:
    Kansas City, MO
    Vehicle:
    71 Grabber
    You can draw manifold vac off the back of the carb, or off the intake. I think I used the one on the back of the carb for the power brakes, and the one off the intake to run to the vac modulator on the tranny and the vac can for the climate controls. I ran the PVC to the front port on the carb. I just realized I have way to many vacuum lines. :16suspect :D
     
  15. comet 75

    comet 75 comet 75 swap 302

    Joined:
    Nov 29, 2002
    Messages:
    176
    Likes Received:
    0
    Trophy Points:
    0
    Location:
    Quebec
    Vehicle:
    mercury comet 1975 302
    I put on my car a c4 trans. from granada 1977 does it possible that I don't have any vac modulator???
     

Share This Page