rich carb

Hacksaw · 09-04-2019, 04:19 PM

Using a power valve in primary side?

Ralph A Powell · 09-04-2019, 07:51 PM

Dripping Bosters?

vic guilmino · 09-06-2019, 07:41 PM

yes power valve no dripping

RJ Sledge · 09-06-2019, 08:36 PM

Vic
I’d be looking real hard at the idle circuit.
If your going off a 2-step, wot, it will be rich.
Footbraking you might play around with squirter size, most Holleys are around a 28 Stock I have run as high as a 43.
How fat is it down low ?

RJ

vic guilmino · 09-07-2019, 09:38 AM

10.6 afr

RJ Sledge · 09-07-2019, 07:22 PM

If your O2 is in your collector, and it is within 12” from the end, you will not get a “clear” read, it will always show rich until you bring up rpms as in making a pass down the track then it will read correctly.
You can slip on an 18” extension to the end of collector and tune it for lower rpms (2 step leave or foot brake leave). Then take off extension. It’s is sucking air back up past the O2 sensor and it will show rich until you get rpms up and going down track.

Good luck
RJ

Darrel Goheen · 09-07-2019, 09:14 PM

Quote:

Originally Posted by RJ Sledge

If your O2 is in your collector, and it is within 12” from the end, you will not get a “clear” read, it will always show rich until you bring up rpms as in making a pass down the track then it will read correctly.
You can slip on an 18” extension to the end of collector and tune it for lower rpms (2 step leave or foot brake leave). Then take off extension. It’s is sucking air back up past the O2 sensor and it will show rich until you get rpms up and going down track.

Good luck
RJ

Actually it'll show lean.

09-04-2019, 04:19 PM	#1
Hacksaw Senior Member Join Date: Sep 2016 Posts: 881 Likes: 206 Liked 308 Times in 173 Posts	Re: rich carb Using a power valve in primary side?

09-04-2019, 07:51 PM	#2
Ralph A Powell Member Join Date: Oct 2017 Location: Bay City Texas Posts: 387 Likes: 2 Liked 225 Times in 136 Posts	Re: rich carb Dripping Bosters?

09-06-2019, 07:41 PM	#3
vic guilmino Senior Member Join Date: Dec 2001 Location: wv Posts: 884 Likes: 42 Liked 56 Times in 21 Posts	Re: rich carb yes power valve no dripping __________________ Vic Guilmino 1129 STK

09-06-2019, 08:36 PM	#4
RJ Sledge Senior Member Join Date: Jun 2007 Posts: 783 Likes: 497 Liked 288 Times in 90 Posts	Re: rich carb Vic I’d be looking real hard at the idle circuit. If your going off a 2-step, wot, it will be rich. Footbraking you might play around with squirter size, most Holleys are around a 28 Stock I have run as high as a 43. How fat is it down low ? RJ

09-07-2019, 09:38 AM	#5
vic guilmino Senior Member Join Date: Dec 2001 Location: wv Posts: 884 Likes: 42 Liked 56 Times in 21 Posts	Re: rich carb 10.6 afr __________________ Vic Guilmino 1129 STK

09-07-2019, 07:22 PM	#6
RJ Sledge Senior Member Join Date: Jun 2007 Posts: 783 Likes: 497 Liked 288 Times in 90 Posts	Re: rich carb If your O2 is in your collector, and it is within 12” from the end, you will not get a “clear” read, it will always show rich until you bring up rpms as in making a pass down the track then it will read correctly. You can slip on an 18” extension to the end of collector and tune it for lower rpms (2 step leave or foot brake leave). Then take off extension. It’s is sucking air back up past the O2 sensor and it will show rich until you get rpms up and going down track. Good luck RJ