Am I asking too much from my tuner?
04-12-2010, 10:30 AM
#23
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Ya I dont like the idea of being too rich just for safety reasons. There is a middle ground that you have to find and that is where I intend to be. Not all out raced tuned but not too concertive ether.
04-12-2010, 10:52 AM
#25
anybody that tells you to spray even a 100shot without pulling timing is being ignorant! You can always put the timing back in, read plugs and verify... Why chance it? Remember lean with less timing is a hell of alot better than rich with too much timing.
04-12-2010, 07:33 PM
#26
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No word from eather tuner so I will try again tomarrow. In till then I be reading up on reading plugs.
04-13-2010, 04:42 PM
#27
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Just talked to my tuner and he said he would be glad to pull the plugs and have me read them. Bad news he is booked for 2 weeks straight. Which is ok by me, more time to become an expert on plug reading.
Last edited by danger ds; 04-13-2010 at 04:59 PM.
04-13-2010, 04:46 PM
#28
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I think everyone hit the nail on the head in here.
I'd pull newhere from 4-6* of timing and use the BR7Ef Plug.
It's not the most indepth arcticle on plug reading but it a good read
http://cochise.uia.net/pkelley2/sparkplugreading.html
I'd pull newhere from 4-6* of timing and use the BR7Ef Plug.
It's not the most indepth arcticle on plug reading but it a good read
http://cochise.uia.net/pkelley2/sparkplugreading.html
04-14-2010, 02:15 PM
#29
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... a small 100 shot doesnt need to have timing pulled.... its not near a large enough explosion as it would be with a 500" motor with 14:1 CR....
you can pretty well tune a 400hp car with a "100 shot" in the dark with mittens on...
as long as it runs clean N/A... sure check the plugs but keep the timing as long as you didnt have the car "over timed" to begin with
you can pretty well tune a 400hp car with a "100 shot" in the dark with mittens on...
as long as it runs clean N/A... sure check the plugs but keep the timing as long as you didnt have the car "over timed" to begin with
04-14-2010, 07:17 PM
#31
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I will see what the mill likes. We will start with timing pulled and work our way down. Thanks to everybody for there well informed opinions, I defentaly feel more confident now then I did at the start of this thread.
04-15-2010, 02:25 PM
#33
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Do not just jump into a 100 shot without timing pulled. Every engine reacts differently taking the time and working your way up will take less time than working to build a new motor. There are alot of variables when it comes to timing like chamber design, size, quench, fuel, spark plugs and gap. Always start small and work your way up and even more so that this is your first time. Plus it will help you to learn the plugs as you can see changes with every step. With the AFRs I like my N/A tunes about 12.8-.9 and my n20 to set about 12.6-.7 for a 100-150 shot. I don't like to add the fuel to compensate through the standalone though I just change my pe multiplier at wot to keep the fuel out of the intake.
04-15-2010, 02:40 PM
#34
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When all this goes down, get ready for some plug pics cause I plan on going through a couple of sets. The car is jeted for the 50 shot now and all tuning will be done on the dyno. I just wished he had a dynojet or a mustang dyno so I could get a better comparson. Once dialed in I will travel back to the dynojet where I got my H/C readings for the comparison. Stay tuned.
05-20-2010, 06:43 PM
#35
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Well long story short the plan stated above dident go as so. Here is the run down. #5 #7 was the lean cylinders, jeted it for the 100 shot 33F 52N, C16 in the standalone, went from 55psi to 30psi and car is still pig rich at 10.0 at end of run, and took out no timing.
Last edited by danger ds; 06-13-2010 at 02:49 PM.
05-20-2010, 07:12 PM
#36
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Well were gonna need the a/f graph to help ya. Did you have good bottle pressure on that run? what did the a/f start out at? might have a restriction of some sort
05-20-2010, 07:12 PM
#37
If the tune is good and the A/F is correct on the motor and correct on the gas, you do not need to pull any timing on a 100 shot. Been there done that. Get it right on the motor, use the fuel pressure on the standalone to dial it in on the gas. I've ran a 150 shot for 4 years and never pulled any timing or lost a motor due to timing.
