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Author
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Topic: Holley Secondary springs.
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Stang28965
Gearhead Posts: 355
From: Webster New York USA
Registered: Mar 2001
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posted 04-08-2001 09:47 PM
   
Does anyone know what color spring I should use on my carb? it's the 4160 carb, I think Im going to go with the purple spring, Or would that be to heavy? I was just interested in what all of you guys use. Thanks,-Jeff
1965 Mustang Coupe
289 Bored .030over
302 Heads
420 lift Cam
H-Pipe with dynomax mufflers
8 inch rear with 3.55's
4speed trans
http://members.cardomain.com/stang65
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kcode
Gearhead Posts: 2408
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 04-08-2001 10:53 PM
The purple spring is considered a middle of the road spring and probably is your best bet, depending on what you want to accomplish. Anything lighter, yellow or white, might start opening to soon. Holley make a quick change top for the secondary diaphragm which makes changing springs easy. Springs are cheap, try various combinations to find which one works best for you.Mike
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steve'66
Gearhead Posts: 5272
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 04-09-2001 12:08 AM
Jeff,For your engine go with the yellow spring! Or take the ball/restictor out and go with the stiffer springs, but you shouldn't have to go there. Just run the lightest w/the ball or restrictor in, and you'll see the secondaries open about the right time. Good luck! SteveW
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Stang28965
Gearhead Posts: 355
From: Webster New York USA
Registered: Mar 2001
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posted 04-09-2001 06:25 AM
ok, thanks guys, I did have the 2nd yellow spring in and it seems to open to fast, Thats why I wanted to go with purple. I raced a 1999 Z28 Camaro at about 50, But I did not downshift so I was in 4th, and he pulled on me (but not the way he should have) Then I looked at his Plate # and it said BLWNZ28. Then I got to the next light and my damn float for the secondarys was open, So I had a steady flow of gas going into my carb, that was not a fun trip home.  ) I want to know what would have happen if my car was running right and I had downshifted, Would I have acually pulled on a NON blown z28? It sure seems that way! The camaro also had to have no mufflers at all, he got next to me a reved it and it scared the poop out of me, It was loud and sounded like @*^&.-Jeff
1965 Mustang Coupe
289 Bored .030over
302 Heads
420 lift Cam
H-Pipe with dynomax mufflers
8 inch rear with 3.55's
4speed trans
http://members.cardomain.com/stang65
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Moneymaker
Administrator Posts: 17471
From: Lyons, IL, USA
Registered: May 99
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posted 04-10-2001 09:44 PM
I like to remove the check ball and use the heavy black spring on 4160 series carbs myself. It seems much more positive that way.  ------------------
Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link
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