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12-08-2004, 03:32 PM
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#1 |
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OBS guy
Join Date: Jun 2004
Location: SoCal
Posts: 1,060
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Anyone have a good recommendation for an 'economic' O2 monitoring setup?
I really want a decent setup to monitor my exhaust and dial in my Carter AFB carb. I don't really want to go off of feel since that can get time consuming and rarely turns out right. I would like to know my O2 levels at cruise and on power to meter and jet my Carter properly.
I suspect I am lean on power and cruising, especially since the carb has never been dialed in after being tuned for 5k feet. I would even consider going one jet up or down if I knew what is in there now, but I don't. OR, if someone happens to have tuned a Carter 650 AFB at sea level, I would LOVE to know your setup! That would give me the ballpark.
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88 Suburban Goodies- Alpine, Auto Meter, BDS, Bilstein, B&M, BFG, Borgeson, Bushwhacker, Cowl hood, Flowmaster, Genuine Gear, Holley, Infinity, JVC, K&N, MB Wheels, MSD, Pioneer, Skyjacker, Sony, Thorley, Walker + more |
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12-08-2004, 06:02 PM
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#2 |
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Registered User
Join Date: Nov 2004
Location: "Under Montana skies."
Posts: 1,836
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'71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup. |
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12-08-2004, 06:13 PM
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#3 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
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a/f ,meters are great in a perfect world but in the real world air conditions change so much you will lose every hair on your head trying to keep things optimal. read the plugs to tune it properly they will tell you about everything you need to know
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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12-09-2004, 10:46 AM
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#4 |
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Registered User
Join Date: Oct 2004
Location: San Diego
Posts: 13
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HI,
Innovatemotorsports.com has a wide band sensor that is more accurate that the earlier sensors that only tell you if you are near optimal a/f ratios. This one will tell you the actual air fuel ratio. They run about 350.00 dollars.
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Rick 69 Longbed Project 57 Chevy 406 Four Speed |
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12-09-2004, 12:17 PM
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#5 |
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Registered User
Join Date: Dec 2002
Location: Tampa
Posts: 1,191
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Wide band O2 is definately the way to go.
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'68 Short Step LS1/T56, Hydratech, Fatman Fabrications Stage III, Baer, Hot Rods to Hell, US Body, S&W, etc |
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12-09-2004, 12:29 PM
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#6 |
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Senior Member
 
Join Date: Mar 2000
Location: Saskatoon,SK,Canada
Posts: 2,476
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Yup you need a wide band or it'll be a waste of money. There are plans and kits available on line to build your own but the sensors they require are not cheap. If you are lucky some Honda Civics had the right kind of sensor and at one time at least could be found in the odd wrecking yard. Depending on where in the exhaust sytem you are placing the sensor there are heated and unheated versions. The further down line (and therefore cooler) you go the more likely you will need a heated version.
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Saskatoon, Saskatchewan Canada |
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12-09-2004, 04:22 PM
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#7 |
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Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,746
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Build your own:
http://www.diy-wb.com/ or use a color tune and brake dyno. http://www.aep.bigstep.com/colortune1.htm http://www.niksula.cs.hut.fi/~mdobru...iy/10/dyno.htm If you go AFR go WB others won't tell you much. Also Harbor Freight sells Colortune.
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 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI Last edited by neonlarry; 12-09-2004 at 04:29 PM. |
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