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Re: The benefits of an Oxygen Sensor.......... [Re: Big Squeeze] #1156866
01/17/12 04:37 PM
01/17/12 04:37 PM
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The Swamp
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Sixpak Offline
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The Swamp
Anyone have any thoughts about the viability of results taken from an H or X pipe? Would an H pipe reduce the ability to see if the carb needed different jets side to side?

Re: The benefits of an Oxygen Sensor.......... [Re: Cuda340] #1156867
01/17/12 04:43 PM
01/17/12 04:43 PM
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Posts: 43,269
Bend,OR USA
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Cab_Burge Offline
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Quote:

Thanks!!! One more question. Do you put bungs in both pipes and tune each bank? Or do you just go off of one side of the engine?


I bought the LM1 for on the car tuning and later bought the FAST unit for dyno tuning. Had problems with the FAST the first time I used it, return it to FAST under warrenty and they fix it FOC I treid switching the LM1 sensor from side to side and then compared the readings on the laptop, that will work and I did see that the right side ran different AFR than the left side I ended up buying the LC1 add on kit and hooked it up to the LM1 so I can read both sides at the same time I still see a difference on the two sides, time to start adjusting the jetting to get them even


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: The benefits of an Oxygen Sensor.......... [Re: Cuda340] #1156868
01/17/12 05:23 PM
01/17/12 05:23 PM
Joined: Jul 2010
Posts: 1,491
Oologah, Oklahoma
Big Squeeze Offline OP
pro stock
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Oologah, Oklahoma
Quote:

Thanks!!! One more question. Do you put bungs in both pipes and tune each bank? Or do you just go off of one side of the engine?

Dewayne is only 6 hours away from me and I spoke to him before, great guy.

Ryan J (Shady Dell) built my motor but I am looking to get the most out of it.

Thanks,
Jeff




I've put bungs in both sides and there, typically, isn't a huge difference, especially if you have a good, single plane intake......Thing is, you can read both sides, but as long as it runs and drives nicely and the numbers aren't WAY off side to side, it's not worth worrying about IMHO unless you're tuning it on a dyno and trying to get every last ounce out of it.....

I want the car to drive around and feel completely smooth while transitioning from idle, to part throttle, to WOT at whatever rate and vehicle speed I put my foot down.......If it feels smooth, you're really close, if not right on the money, to where it wants to be.....

Since Ryan did your motor, I'm sure it'll run great and I KNOW he can help you tune it better than I can.....


If you can't handle the truth, you're living a lie.......
Re: The benefits of an Oxygen Sensor.......... [Re: Sixpak] #1156869
01/17/12 05:32 PM
01/17/12 05:32 PM
Joined: Sep 2005
Posts: 549
Chicagoland
chargerron69 Offline
mopar
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Chicagoland

Re: The benefits of an Oxygen Sensor.......... [Re: Sixpak] #1156870
01/17/12 05:36 PM
01/17/12 05:36 PM
Joined: Aug 2005
Posts: 989
WI, USA
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67dodge67 Offline
mopar addict
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WI, USA
Quote:

Anyone have any thoughts about the viability of results taken from an H or X pipe? Would an H pipe reduce the ability to see if the carb needed different jets side to side?




I was wondering the same thing here. According to the local shop I go to, they say putting it in the h-pipe will give a reliable reading and then go from there as far as tuning. But... has anyone else done the same here? Great thread...

Dave

Re: The benefits of an Oxygen Sensor.......... [Re: 67dodge67] #1156871
01/18/12 04:04 PM
01/18/12 04:04 PM
Joined: Dec 2004
Posts: 2,368
Wheatfield, NY
Cuda340 Offline
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Thanks for the info!!!!

Re: The benefits of an Oxygen Sensor.......... [Re: Cuda340] #1156872
01/18/12 06:25 PM
01/18/12 06:25 PM
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Indiana
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Indiana
I tuned all last Spring/Summer/Fall with a wideband sensor and I quickly found out what I "thought" I knew. There were tuning errors on my part that I could not see until I started using the sensor. I now know the knowledge gained my using one of these sensors.

A buddy of mine has a carb that he wants me to help him tune. I am already dreading going over there to help him when I know that he does not have a wideband on his car. I am thinking of taking my backup carb and tuning it on my motor (just the basics: Idle/Cruising/WOT) and then letting him put it on his motor. This would probably be allot closer than me "winging it" with the setup that he currently has on his motor.


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: The benefits of an Oxygen Sensor.......... [Re: YO7_A66] #1156873
01/18/12 07:34 PM
01/18/12 07:34 PM
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
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Von Offline
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NE Oklahoma
I have a LM-2 and it has been priceless....

I bought the LM unit a few months after I got my junk back on the road after it sat for 15 years. Played with the LM, tuning, etc and the car ran quicker on its first pass off of the trailer than I was hoping it would go when sorted out. No doubt the LM unit was the reason...sure wasnt me...

I played around with E85 for awhile and it would have been dang hard to have tuned the carb without the LM unit...


72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
Re: The benefits of an Oxygen Sensor.......... [Re: Von] #1156874
01/18/12 08:20 PM
01/18/12 08:20 PM
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Posts: 32,394
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Quicktree Offline
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OK any real world bracket racing info with the wide band? I could care less about drive ability

Re: The benefits of an Oxygen Sensor.......... [Re: Quicktree] #1156875
01/18/12 08:38 PM
01/18/12 08:38 PM
Joined: Dec 2007
Posts: 12,589
Great Neck,LI,new york
hemi-itis Offline
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Great Neck,LI,new york
With all the O/2 sensors now on the market,it makes it hard to decide which one to get Does anyone still read EGT's??Which one is better?I have EGT bungs in my headers and use the pan evac that goes into the header collector,so where do I put the O/2 bungs?


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: The benefits of an Oxygen Sensor.......... [Re: hemi-itis] #1156876
01/18/12 09:03 PM
01/18/12 09:03 PM
Joined: Jul 2010
Posts: 1,491
Oologah, Oklahoma
Big Squeeze Offline OP
pro stock
Big Squeeze  Offline OP
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Oologah, Oklahoma
Quote:

With all the O/2 sensors now on the market,it makes it hard to decide which one to get Does anyone still read EGT's??Which one is better?I have EGT bungs in my headers and use the pan evac that goes into the header collector,so where do I put the O/2 bungs?




For what we do, EGT's are basically useless.......They'll just tell you which hole is out.....

Here's some good info on EGT's.........

You can put the O2 sensor anywhere in the exhaust sysem, from the collector area all the way back to the tail pipe area........like mentioned, I put them somewhere around the transmission area.....


If you can't handle the truth, you're living a lie.......
Re: The benefits of an Oxygen Sensor.......... [Re: Quicktree] #1156877
01/19/12 01:13 PM
01/19/12 01:13 PM
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Posts: 32,394
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Quicktree Offline
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Quote:

OK any real world bracket racing info with the wide band? I could care less about drive ability



no bracket racing info from anyone

Re: The benefits of an Oxygen Sensor.......... [Re: Quicktree] #1156878
01/19/12 02:02 PM
01/19/12 02:02 PM
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Posts: 19,318
State of confusion
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State of confusion
Quote:

Quote:

OK any real world bracket racing info with the wide band? I could care less about drive ability



no bracket racing info from anyone


Well, before my chassis dyno I was stuck in the low 10`s then after finding out how lean my street tune up was and fixing it, I went 9.98..........Now that my new motor is tuned from REAL world info, I went 9.94 w/dead tires on a 1.44 60ft. compared to my 1.36 60`s.


72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
Re: The benefits of an Oxygen Sensor.......... [Re: Quicktree] #1156879
01/19/12 05:21 PM
01/19/12 05:21 PM
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Bend,OR USA
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Quote:

Quote:

OK any real world bracket racing info with the wide band? I could care less about drive ability



no bracket racing info from anyone


The LM1 with the LC1 and RPM option help me see the motor go lean after the 1/8 mile with the .110 needles and seats in all the carbs.(four, three Dominators and one Holley 850 DP ) I tested on the car at the 1/4 mile track. Go test it I'm working on leaning out the part throttle circuits now on those same carbs


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: The benefits of an Oxygen Sensor.......... [Re: Cab_Burge] #1156880
01/19/12 06:04 PM
01/19/12 06:04 PM
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Posts: 32,394
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Quicktree Offline
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Quote:

Quote:

Quote:

OK any real world bracket racing info with the wide band? I could care less about drive ability



no bracket racing info from anyone


The LM1 with the LC1 and RPM option help me see the motor go lean after the 1/8 mile with the .110 needles and seats in all the carbs.(four, three Dominators and one Holley 850 DP ) I tested on the car at the 1/4 mile track. Go test it I'm working on leaning out the part throttle circuits now on those same carbs


thats good, but kind of speed related. I am more interested in making one more consistent using the wide band. down here you almost have to run one lean to survive the daylight to dark scenario.

Re: The benefits of an Oxygen Sensor.......... [Re: Quicktree] #1156881
01/19/12 06:24 PM
01/19/12 06:24 PM
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Ontario.Canada
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can.al Offline
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Ontario.Canada
so what is the lean limit for cruise...14.5?
and yet to hear any preference. ie mxt,Lm 1 ??

Re: The benefits of an Oxygen Sensor.......... [Re: can.al] #1156882
01/19/12 08:34 PM
01/19/12 08:34 PM
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Posts: 319
jonestown,pa
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dmking Offline
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jonestown,pa
there are some that use the lm-1 but the lm-2 is better. i use the wego3 from daytona sensors.
i can not tell you what i run at lite load running on my car but street cars run 14.5 down the road and ritchen up to 13s when loading the engine hard.
a drag engine at 14 to 1 with forged pistons should be fine there but you need to make sure the gas is going to work that lean because you can get away with a lower octane fuel when running rich. (like 12.3 to 1 vs 14.5 to 1) with our cycles guys are running regular on a 12.5 bike but they are pig rich. the pent roof chambers are less prone to detonation i must add.

Re: The benefits of an Oxygen Sensor.......... [Re: can.al] #1156883
01/19/12 10:41 PM
01/19/12 10:41 PM
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Indiana
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Indiana
""so what is the lean limit for cruise...14.5?""

That will depend on the setup. My 9.7:1 340 (no vacuum advance, 34 total, 91 0ctane/10%e) will cruise as lean as 15.4 with no surging. But 15.8-16.0 and it will start surging. I don't like to go leaner than about 15.2 to be safe. I am currently changing the ignition box and swapping to a vacuum advance distributor, so I will have to test the mid 15's again. But once again, it depends on the setup.


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)
Re: The benefits of an Oxygen Sensor.......... [Re: Quicktree] #1156884
01/20/12 11:38 PM
01/20/12 11:38 PM
Joined: Jul 2010
Posts: 1,491
Oologah, Oklahoma
Big Squeeze Offline OP
pro stock
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Oologah, Oklahoma
Quote:

OK any real world bracket racing info with the wide band? I could care less about drive ability



Quote:


no bracket racing info from anyone



Quote:

thats good, but kind of speed related. I am more interested in making one more consistent using the wide band. down here you almost have to run one lean to survive the daylight to dark scenario.





OK......I'm going to TRY to explain this to you AGAIN.....but in a different way so MAYBE you'll understand.....

Do you absolutely NEED a timing light??? NO, because you could just time it by ear and then slowly put timing into your motor a small turn at a time until the trap speed stops picking up.........

Do you absolutely NEED a tire gauge??? NO, because you could just put air in the tires until they look about the same and then do some burnouts on dry pavement to figure out if you need more or less pressure in each tire........

Do you absolutely NEED an oil pressure gauge??? NO, because you could just run it with an idiot light, or no gauge at all......and if it spins a bearing or kicks a rod out, then you'll know it had an oil pressure problem....

Do you absolutely NEED an amp gauge or volt gauge??? NO, because you could know it's not charging by seeing that the headlights aren't as bright as they should be, or the battery is too low to crank the motor over.....

Do you absolutely NEED an angle finder to set pinion angle??? NO, you could just eyeball it and move it if it vibrates on deceleration or put more angle in it if you need more traction.....

Do you absolutely NEED a water temperature gauge??? NO, because you could just feel your cylinder heads by hand before you went up to make a lap......and as long as it's not puking water, odds are it's not runnnig hot......

Do you absolutely NEED a tachometer and/or shift light??? NO, because you could do EXACTLY like I do my 10 second 4-speed GTS and shift it by ear/feel........

AND do you absolutely NEED an O2 sensor??? NO, because you could do as most people do it........just set your floats.....set the idle mixture and run it......if it bogs, go to a bigger squirter and/or a bigger accelerator pump.......and if you're really feeling froggy, you can even change the jetting like very few actually do to get the most trap speed.........

The thing is, all EIGHT of those TOOLS are NOT needed......and they're all JUST tools........NONE of them tell you ANYTHING you HAVE to have.......

A timing light DOES NOT tell you how much timing you need........

A tire pressure gauge DOES NOT tell you how much tire pressure you need......

An oil pressure gauge DOES NOT tell you how much oil pressure you need.......

An amp gauge or volt meter DOES NOT tell you how much juice you need........

An angle finder DOES NOT tell you what angle the pinion needs to be......

A water temperature gauge DOES NOT tell you what you should run your water temperature at......

A tachometer and/or shift light DOES NOT tell you where you need to shift at.........

and an O2 sensor DOES NOT tell you what A/F ratio your motor needs to run at........and it can't tell you if you have an intake manifold with HORRIBLE air/fuel distribution, unless you put one in each header tube.........

Do you see the pattern here??

What do they ALL have in common?? They take a LOT of guess work out of this hobby and help you get to where you want to be a LOT faster.......

IMHO, EVERYONE that wants their car to run as good and consistant as possible NEEDS EVERY single one of those tools.......

BUT, you don't HAVE to have ANY of them.......

Re: The benefits of an Oxygen Sensor.......... [Re: Big Squeeze] #1156885
01/21/12 12:27 AM
01/21/12 12:27 AM
Joined: Feb 2005
Posts: 20,195
PA.
pittsburghracer Offline
"Little"John
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PA.
Well said. I like that.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




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