First plug change.
Gettin' there...next set of plugs. BKR6E, one step colder than the last, still a standard .035 gap. 100 miles of street driving, with 4 "passes" on the secret country dragstrip right before I pulled them. No clean-cuts at the top or anything but I'm getting a good glimpse..
Richest one
Leanest one. Yeah I broke it..
I'm getting plating color change on 1-2 threads so the engine's liking the heat range. NGK's read heat a little different but it's easier to see in person.
I bumped the IAB's way up to see what a big swing would do, went .078s, and it leaned things out but took power and response with it, after re-adjusting the base settings. So, before pulling the blocks to change anything internally I wanted to test one more thing and went to .070 IABs and .031 MABs, BUT closed my secondary T-slots up just a quarter turn from .020 and bumped the idle timing to 24 to get the RPM back to 850. Now at 24 intial, up from 22 and my total is actually only 32. I reported it at 34 last time but I put a timing tape on my shiny balancer (Romac) and now I'm seeing things more accurately..
The T-slots come down to the same level on this (4-corner) carb, and I remember back in the day BG recommended setting them all the same, then later they said "close the rear slots for engines that idle under 1000 rpm, open them square if idling above 1000..." then later changed again....so apparently even they weren't sure lol.
Since I'm dealing with the primaries mostly for now anyway, I got thinkin' maybe the rear slots are just bleeding extra un-needed fuel during the transition period...seems to have leaned me out without losing the ability to push the *** end into the next lane at 30 mph LOL. I know, but the kids love it:p
I'm liking the idle and cruise now but it's a bit lean under power as you can see. In addition to the plugs, the gauge says 13.1/ 60mph cruise. 13.8-14.0/40 mph cruise, which is where this car spends most of it's time. I know it's modern unleaded, so it doesn't color up quite as fast but I'd like to see a little more at the bottom. Now I may go back to that 10.5 PV and see how she flies.
Oh....my ford buddy gave me some Champion plugs out of his stash, a mix of 12 and 10 heat range and I'm gonna compare the results to these NGKs. I prefer the NGK but Champs are a little easier to read sometimes, I think..
Gettin' there...next set of plugs. BKR6E, one step colder than the last, still a standard .035 gap. 100 miles of street driving, with 4 "passes" on the secret country dragstrip right before I pulled them. No clean-cuts at the top or anything but I'm getting a good glimpse..
Richest one
Leanest one. Yeah I broke it..
I'm getting plating color change on 1-2 threads so the engine's liking the heat range. NGK's read heat a little different but it's easier to see in person.
I bumped the IAB's way up to see what a big swing would do, went .078s, and it leaned things out but took power and response with it, after re-adjusting the base settings. So, before pulling the blocks to change anything internally I wanted to test one more thing and went to .070 IABs and .031 MABs, BUT closed my secondary T-slots up just a quarter turn from .020 and bumped the idle timing to 24 to get the RPM back to 850. Now at 24 intial, up from 22 and my total is actually only 32. I reported it at 34 last time but I put a timing tape on my shiny balancer (Romac) and now I'm seeing things more accurately..
The T-slots come down to the same level on this (4-corner) carb, and I remember back in the day BG recommended setting them all the same, then later they said "close the rear slots for engines that idle under 1000 rpm, open them square if idling above 1000..." then later changed again....so apparently even they weren't sure lol.
Since I'm dealing with the primaries mostly for now anyway, I got thinkin' maybe the rear slots are just bleeding extra un-needed fuel during the transition period...seems to have leaned me out without losing the ability to push the *** end into the next lane at 30 mph LOL. I know, but the kids love it:p
I'm liking the idle and cruise now but it's a bit lean under power as you can see. In addition to the plugs, the gauge says 13.1/ 60mph cruise. 13.8-14.0/40 mph cruise, which is where this car spends most of it's time. I know it's modern unleaded, so it doesn't color up quite as fast but I'd like to see a little more at the bottom. Now I may go back to that 10.5 PV and see how she flies.
Oh....my ford buddy gave me some Champion plugs out of his stash, a mix of 12 and 10 heat range and I'm gonna compare the results to these NGKs. I prefer the NGK but Champs are a little easier to read sometimes, I think..
