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  •  » FYI Ford, Classic Mustang Tech Discussion
  •  » Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

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    7/29/2013 3:37 PM  #1

    Fastbackbhoy
    FYI Addict

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    From: St. Catharines Ontario Canada
    Registered: 4/01/2013
    Posts: 156

    Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

     This is for all you Engine Gurus who know more than me

    After changing the Intake Manifold from a Chinese (pro products) which worked great no issues
    And isnstalling  Edelbrock 7121 Rpm Performer My car runs like crap and will hardly idle When as before the Lumpy cam noise and exhaust note was Awesome,Heres my Mild Engine Build sheet Fro when the engine was done Previous owner

    8-030" sealed power flat top pistons
    sealed power moly rings
    M68A Oil Pup
    Liberty 3 Pc Double Roller Timing Chain
    Comp cams Retro Hydraulic Roller camshaft Kit 512-221duration part#31-432-8
    Scorpian 1.6 Rocker Arms
    Pro Comp Aluminium Heads, 202 -160  Stainless Valves
    Chrome molly Retentions
    Pioneer Crankshaft Balancer
    Arp bolts used 
    MSD Distributor,8mm wires and Blaster coil
    Quick fuel SS Super Street 650CFM Carb(is this carb too much for my 289 mild build?(have all the specs and jets#s etc)
    Headman Elite Headers
    Canton Oil Pan with kick out screen
    timing and everything else seems fine.
    Bottom line i wish id never touched it as it ran flawlessly,and sounded great.It runs fairly well on hwy with a slight hesitation that it never had before has tons of pulling power from take off but i have to use 2 pedals at the lights cause it idles so bad, and im worried about damage to Transmission in stop and go traffic 1966 mustang 289 mild build C4 Rebuilt
    It also never had the Vacum advance line was always plugged at distributor and carb,But ran worse till i put a vacum hose on as should be with the new Edelbrock intake.

    Any thoughts advice,if its not the Carb ive screwed up somewhere

    Frustrated
    Jimmy O


     

    Last edited by Fastbackbhoy (7/29/2013 3:38 PM)

     

    7/29/2013 3:59 PM  #2

    Jeff in GA
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    From: San Luis Obispo, CA
    Registered: 4/01/2013
    Posts: 209

    Re: Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

    If truly all you did was change the intake manifold and the car now runs like poo, it is a pretty good chance you have a vacuum leak. First things first, check and make sure there are no open vacuum ports which need to be plugged. If that checks out then you may have a leak between the manifold and the heads. I'm not sure if this is still considered safe, but I always used to hunt down exhaust leaks by squirting starter fluid all around the likely leak spots while the engine was running. When the engine revs, you've found your leak.

    1965 Mustang 2+2 EFI
     

    7/29/2013 5:43 PM  #3

    6sally6
    Hyper FYIFORD ADDICT

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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,923

    Re: Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

    220/220@050 duration with a 110* LSA the cam is healthy butt-knot what you could call radical.(in my oppinion) The other poster hit it on the head I think.......vacuum leak somewhere. Check around the base of the carb.....common place to "suck". Also the intake ports.
    What about the PCV?   Gas is fresh?
    Should be able to idle in gear at stop light cam ain't that big.
    Just work one area at the time. Once there is zero vacuum leaks...THEN start messing with other things.
    6sal6

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    7/29/2013 6:03 PM  #4

    boomyal
    Senior 24-7 FYI Addict

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    From: Vancouver, Washington
    Registered: 4/01/2013
    Posts: 1,295

    Re: Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

    Better to use propane than starter fluid.  Just take a torch (unlit) and run it around every where to determine where there might be a leak.  I had that happen to me once with an Edlebrock intake with a Ford 1" PCV spacer.  Turns out that the carb was hitting the screw clamp that I used to hold the PCV hose to the spacer nipple.  The propane brought it to light.

    Last edited by boomyal (7/29/2013 6:04 PM)

     

    7/29/2013 8:18 PM  #5

    T. McG/393
    FYI Addict

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    From: Central IL.
    Registered: 4/01/2013
    Posts: 126

    Re: Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

    I have Summit's 600 cfm street/strip carb on my 393 stroker. I really like it, does everything it is advertised to do.

    Hosted Mustang Steve Birthday Bash 2009        http://www.tm66mustang.com
     

    7/29/2013 9:23 PM  #6

    Rudi
    Senior 24-7 FYI Addict

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    From: Stuck in the 50's Welland Ca
    Registered: 4/01/2013
    Posts: 4,011

    Re: Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

    Edelbrock carbs just don't look right on a Ford!
    The 4100 clone is the way to go IMO.

    Last edited by Rudi (7/30/2013 8:57 AM)

    Good work ain't cheap, Cheap work ain't good!   Simple Man
     

    7/30/2013 2:34 PM  #7

    McStang
    I FYI 24-7

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    From: Benicia, CA
    Registered: 4/01/2013
    Posts: 502

    Re: Anyone Installed Summit Racings street/strip carb Copy of Old 4100?

    Found this thorough review of the Summit carb a little while ago, pictures have gone missing from the post but it's still a good read:

    http://www.fordmuscleforums.com/induction-articles/482814-summit-carb-review-road-test.html

    I think I'm gonna run one on the used 5.0 roller I'm freshening up to replace my tired old 289 until I have the time & dollars to build a 331 EFI the way I want to.

    (Pinto!)
     

     

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