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  1. #1
    Join Date
    Feb 2007
    Location
    Stockport, Manchester, England.
    Posts
    96

    Throttle returns

    I'm running a Chevy with twin mr gasket return springs in my Dax. Throttle now and then sticks at 1500 to 2000 rpm. That is bloody scary!! What does everyone else run?? Thanks

  2. #2
    Join Date
    Apr 2004
    Location
    East Leake, Nottinghamshire, England.
    Age
    55
    Posts
    9,536
    Quote Originally Posted by griff View Post
    I'm running a Chevy with twin mr gasket return springs in my Dax. Throttle now and then sticks at 1500 to 2000 rpm. That is bloody scary!! What does everyone else run?? Thanks
    2 springs is plenty you need to find out why and what is sticking, cable, carb, pedal, or a bit of each.
    Martin

    351W 416.7 HP and 466.8 ft-lbs

    Running Mega Squirt and Edis 8


  3. #3
    Join Date
    Sep 2003
    Location
    Stratford Upon Avon
    Age
    43
    Posts
    737
    Quote Originally Posted by TINKA View Post
    2 springs is plenty you need to find out why and what is sticking, cable, carb, pedal, or a bit of each.
    Exactly what Martin says. I have 2 springs (same ones) and they are plenty.
    Matt
    Club supporter
    Dax De Dion / 383 SBC 465bhp
    IVA passed 16/4/13, Registered and on the road 24/4/13!

  4. #4
    Join Date
    Feb 2007
    Location
    Stockport, Manchester, England.
    Posts
    96
    Thanks. I'll have a look see if anything is sticking. Might start by oiling it all.

  5. #5
    Join Date
    Dec 2001
    Location
    Cherval, France
    Age
    60
    Posts
    1,698
    Be careful NOT to oil the cable though. Many of the liners within the outer sheath, will swell when they come into contact with light oils such as 3 in 1 etc. This then traps the cable even more (don't ask how I found out !!).

  6. #6
    Join Date
    Feb 2003
    Location
    Devon
    Age
    54
    Posts
    7,767
    Could be the pedal not having quite enough slack.
    Disconnect the cable and springs and see if it sticks at all.
    2003 Dave Brookes Dax 350ci Chevy SB.
    2008 Crendon 462ci Ford Sideoiler No.43
    2012 Crendon 351ci Ford Cleveland No.24
    2019 Crendon 445ci Ford FE No.66

  7. #7
    Join Date
    Oct 2010
    Location
    Northamptonshire
    Posts
    315
    Griff, Make sure that the indentation in the underside of the air cleaner body (if there is one) is positioned correctly above the throttle lever. The lever can sometimes catch the air cleaner body. Had the same issue on my car and that was the simple solution. John K
    ‚ÄčAK 427 with Chevy 350 SBC by CP&P - Registered January 2013

  8. #8
    Join Date
    Jun 2013
    Location
    Margate
    Age
    61
    Posts
    500
    Given the carb already has a return spring built in to both spindles, and there are two more external, that must be some serious binding somewhere! Process of elimination. start disconnecting at one end, and keep going until you find it!

  9. #9
    Join Date
    Feb 2007
    Location
    Stockport, Manchester, England.
    Posts
    96
    Thanks for the replies. I think I'll start with the pedal box as its a Dax item and it is welded so might be catching. Ill check the clearance. Cheers.

  10. #10
    Join Date
    Feb 2007
    Location
    Stockport, Manchester, England.
    Posts
    96
    After looking. I've found the bracket on the back of the carb isn't putting the springs under tension near idle! I'm running a performer rpm so ordered new springs and there is a threaded hole near the carb so hopefully problems solved! Thanks guys!!

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