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timing vs. A/F

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Old 08-14-2012, 04:57 PM
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Originally Posted by soundengineer
I started at 12.0 with 14* pulled out....
Traction is my issue...and I had an electrical issue...
so I stopped at at 12.5 for now....
will be going at it again once I swap everything into the mustang chassis

plugs look ok, but could definitely go a little leaner...
I'm on a #9 and may go to a #10 when I start to bring the timing back in..
So even tho this doesnt seem to be your first rodeo, you started richer and with less timing than was needed and tuned off of the plugs.. That is all I am suggesting. I just think he should start safer and move slower since he is new to the game. Not a guy with a good head on his shoulders like you or Martin with a built motor moving up toward a big hit.

I think the end tune up should be similar to what you guys are suggesting, once the OP has a feel for what he is doing and what this car actually needs.
Old 08-14-2012, 05:07 PM
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like I said.. starting in the low 12's is not an issue...
especially if he's on a smaller shot...

do the standard -2* for every 50hp of nitrous to start with and it will be plenty safe.
Old 08-15-2012, 09:12 AM
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Originally Posted by soundengineer
you cant really do timing on plugs very accurately..
heat yes...timing no
I disagree. all we use is plugs for timing....
Old 08-15-2012, 09:26 AM
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Originally Posted by ShiznityZ28
I disagree. all we use is plugs for timing....
I didnt say we didnt use plugs for timing, I said you cant do it accurately...meaning its not like you can tell if adding 1* was too much on the plugs....
plugs have a fudge room...sometimes, you add 2 and nothing changes
when if you had used a dyno for spark....you can actually see change in 1*

and typically your best judge of timing is not the plugs.. its your ****Edit*oops, sorry, meant to say MPH****....
when the car stops getting faster, you stop adding timing

Last edited by soundengineer; 08-15-2012 at 10:22 AM.
Old 08-15-2012, 09:37 AM
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Originally Posted by soundengineer
if you had used a dyno for spark....you can actually see change in 1*

and typically your best judge of timing is not the plugs.. its your ET....
when the car stops getting faster, you stop adding timing
Dyno's suck for any nitrous tuning.

Tune by MPH not ET.
Old 08-15-2012, 10:52 AM
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Originally Posted by w3s1c0a5t
I am not arguing that it will need to be in 12's most likely. I am saying that you should not just tell someone to tune it to the 12's on a wideband when they are clearly a novice to tuning.

Yes, all of those guys will tell you that. They are also very educated tuners who pull the plugs on nearly every pass. I tune the same way. But again, suggesting a novice to make a full afr point change based of a wideband is asking for trouble in my opinion.

Like I said mid-high 11's with the proper timing pulled out will not hurt anything. Of course there is power on the table, but that is not going to hurt parts. Make a pass with the same jets and a little more timing pulled out. Tune off of those plugs.

Small steps and going off of accurate plugs will keep the parts alive.

Ill skip the ABC paragraph on how tuning works. I just think your suggesting big changes to someone who needs to slow down.
No hard feelings here, I see your point and respect it.
Old 08-15-2012, 01:00 PM
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Originally Posted by ShiznityZ28
I disagree. all we use is plugs for timing....
It will depend on the type of fuel some won't it? Some are better for reading than others? Pump gas vs Race Gas?
Old 08-15-2012, 01:10 PM
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Originally Posted by ShiznityZ28
I disagree. all we use is plugs for timing....
Yep.

Originally Posted by ATVracr
Dyno's suck for any nitrous tuning.

Tune by MPH not ET.
Yep.

Originally Posted by Martin@Tick
No hard feelings here, I see your point and respect it.
None here as well. Everyone here has something more to learn.

Originally Posted by SargeZ06
It will depend on the type of fuel some won't it? Some are better for reading than others? Pump gas vs Race Gas?
Some are easier. E85 has a different way to read it than tradtional fuel's as does Alcohol.
Old 08-15-2012, 02:14 PM
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Originally Posted by w3s1c0a5t
Yep.



Yep.



None here as well. Everyone here has something more to learn.



Some are easier. E85 has a different way to read it than tradtional fuel's as does Alcohol.
I agree 100% it's the people( like the guy in the spark retard thread currently) who even though we may disagree don't know how to respectfully disagree or even see the other persons point of view.
Old 08-15-2012, 06:49 PM
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13.0's on my 100 shot with 6 degrees. Motor still wanted to be leaned out. Popped that motor though......




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