Spark plug gap?
04-08-2008, 08:51 PM
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Spark plug gap?
So on the advice of checking my plugs after my dyno (fail) run, i pulled them and checked the gap...... .040-.042 on all of them. I couldn't find a definitive answer to what the correct gap should be. Running 10psi. I'm thinking .028-.030 is what it should be, but i want to makw sure. So...... what should it be?
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04-08-2008, 11:34 PM
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well, when i dyno'ed, i guess the signal was breaking up because there are whole sections of dyno plot missing. I was told this is because the spark was being blown out/bad signal. I'd feel good saying that where the dyno plot is missing is where boost was spiking due to the crappy MBC. Might i be right? The plugs im running are NGK ZFR7F-11
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04-09-2008, 08:34 AM
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bear in mind he has the 01+ cops, which JasonSBB tested as pretty freakin good at his lab.
mike, if spark were blowing out, you'd feel it as a misfire. it could be crappy wires. or it could be a crappy pick up at the dyno.
mike, if spark were blowing out, you'd feel it as a misfire. it could be crappy wires. or it could be a crappy pick up at the dyno.
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04-09-2008, 10:24 AM
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Well, on my 1st 2 runs at the dyno with the slightly higher boost, i did get several misfires and the dyno plot show'd missing segments on those runs. But on the last run, which felt clean as far as i could tell, there were still missing segments on the plot. I'm goign to tighten up the gap a bit tonight to ~.03 and see how the car feels. The 2 plugs i pulled looked fine though.
I'm also going to try to get some time in with Ed.... but they said i'd be looking at 2-3 hrs for tuning (at $150/hr... i think when they mean a "few hours", they are probably thinking a 'start from scratch' map...since i have a good base, i hope i can keep it under 2 hrs).
I'm also going to try to get some time in with Ed.... but they said i'd be looking at 2-3 hrs for tuning (at $150/hr... i think when they mean a "few hours", they are probably thinking a 'start from scratch' map...since i have a good base, i hope i can keep it under 2 hrs).
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04-09-2008, 10:29 AM
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04-09-2008, 10:44 AM
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horse ****.
there's a lot to do with tuning, very little of which has to do with "monitoring a/fs". there's nothing you can do on a dynojet other than take a few WOT pulls and tweak fuel somewhat. 10 minutes.
if you're going to put down money for a few hours worth of dyno tuning, you need to get on a load dyno, where you can start tuning fuel for real, and then get to your spark map. power is made in the spark map.
there's a lot to do with tuning, very little of which has to do with "monitoring a/fs". there's nothing you can do on a dynojet other than take a few WOT pulls and tweak fuel somewhat. 10 minutes.
if you're going to put down money for a few hours worth of dyno tuning, you need to get on a load dyno, where you can start tuning fuel for real, and then get to your spark map. power is made in the spark map.
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04-09-2008, 11:09 AM
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hehehe...
MUST AD MORE POWERMAPS!! Powermaps are what Tom uses to show that the PCP adds intercooler effect.
Ben, i did call BPM and asked about the dyno, they did add the brake system you asked about the other day. As for load bearing.... i stand corrected. Is Dynolabs dyno a load bearing?
MUST AD MORE POWERMAPS!! Powermaps are what Tom uses to show that the PCP adds intercooler effect.
Ben, i did call BPM and asked about the dyno, they did add the brake system you asked about the other day. As for load bearing.... i stand corrected. Is Dynolabs dyno a load bearing?
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