Holley idle
#2398124
11/03/17 08:10 PM
11/03/17 08:10 PM
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Joined: Dec 2004
Posts: 733 Northern Virginia
Moparmaniacc
OP
super stock
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OP
super stock
Joined: Dec 2004
Posts: 733
Northern Virginia
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Easy question. I'm trying to expose less of my primary idle transfer slot. The idle screw is not even touching. I've adjusted fast idle all the way out and its not touching. Yet I still have a lot of primary transfer slot showing. what am I doing wrong. TIA John
Last edited by Moparmaniacc; 11/03/17 11:14 PM.
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Re: Holley idle
[Re: Moparmaniacc]
#2398139
11/03/17 09:02 PM
11/03/17 09:02 PM
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Joined: Jan 2003
Posts: 12,017 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,017
Benton, IL.
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Are you sure that the fast idle cam is all the way off?
Master, again and still
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Re: Holley idle
[Re: DaveRS23]
#2398149
11/03/17 09:41 PM
11/03/17 09:41 PM
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Joined: Dec 2004
Posts: 733 Northern Virginia
Moparmaniacc
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super stock
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OP
super stock
Joined: Dec 2004
Posts: 733
Northern Virginia
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That screw all the way on the bottom of the carb is for the secondaries. I'm trying to adjust the primary blades.
Last edited by Moparmaniacc; 11/04/17 12:18 AM.
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Re: Holley idle
[Re: Moparmaniacc]
#2399059
11/05/17 09:28 PM
11/05/17 09:28 PM
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Joined: Dec 2004
Posts: 733 Northern Virginia
Moparmaniacc
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super stock
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OP
super stock
Joined: Dec 2004
Posts: 733
Northern Virginia
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OK, my primaries arent closing because the linkage is hitting a huge bracket near the accelerator pump lever. The bracket has a big round hole in it almost 3/4" diameter. (I bought this carb aftermarket). Can I just remove that bracket, it doesn't seem to be serving me any purpose. It's probably for an auto trans application.
Last edited by Moparmaniacc; 11/05/17 09:56 PM.
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Re: Holley idle
[Re: Moparmaniacc]
#2400790
11/09/17 12:28 AM
11/09/17 12:28 AM
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Joined: Dec 2004
Posts: 733 Northern Virginia
Moparmaniacc
OP
super stock
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OP
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Joined: Dec 2004
Posts: 733
Northern Virginia
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I removed the dashpot bracket and now the primary blades close a lot more. I got just a perfect amount of primary transfer slot showing...it looks like a square.
Last edited by Moparmaniacc; 11/12/17 02:18 AM.
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Re: Holley idle
[Re: Moparmaniacc]
#2400837
11/09/17 02:32 AM
11/09/17 02:32 AM
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Joined: Jan 2003
Posts: 9,436 Blair County,PA
62maxwgn
master
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master
Joined: Jan 2003
Posts: 9,436
Blair County,PA
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I removed the dashpot bracket and now the primary blades close a lot more. I got just a perfect amount of primary transfer slot showing...it looks like a square.
For the secondarys, I'm not sure how closed the throttle blades should be. I heard for mechanical secondary, you should adjust the screw on the bottom of the carb to just show a little bit of slot. For vacuum secondary, does anyone know how much to adjust that screw? Make sure the slots are covered all the way? If so, by how much? Some of the 4160's don't have a screw for the secondaries,the top one I pictured is a 4738,70 RR 4 spd.no secondary screw.
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Re: Holley idle
[Re: Moparmaniacc]
#2402333
11/12/17 02:11 AM
11/12/17 02:11 AM
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Joined: Dec 2004
Posts: 733 Northern Virginia
Moparmaniacc
OP
super stock
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OP
super stock
Joined: Dec 2004
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Northern Virginia
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UPDATE: I removed the dashpot bracket and now the binding is gone, so the primary blades now close a lot better, closer to a perfect amount of primary transfer slot showing...it looks like a square. Yesterday - I opened the secondary blades father using the adjustment screw on the bottom of the carb and took it for a ride. The car now runs better than ever before...the idle adjustment screws are giving the best vacuum readings...much closer to the correct 1.5 turns out, rather than the incorrect 0.5 turns like I had before. So I know thing are better now, BUT...the problem now is, the idle is too high... with the idle screw not even touching. So, I guess I went too far with adjusting the secondary screw. Iwill fix this. (I could retard the timing but I dont want to do this right now). Question: Is the objective to get the car to idle just right with timing adjusted just right but without the idle screw touching the primaries at all? Or is it OK to have the idle screw touching a little bit? Finally, what is the best power valve for a 3310 with 16-18 degrees idle vacuum? 8 to 9? What jets should I be using for a stock cam 440?
Last edited by Moparmaniacc; 11/12/17 02:52 AM.
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