Using the stock plugs - Motorcraft sp519 iridium. one set gapped at 0.035 the other gapped at the factory setting - 0.049 to 0.053. I run a 93 tune w/ headers and the usual mods.
With the tight plugs I was thinking that 0.035 was too tight to get good efficiency and burning since its basically a stock boss engine w/ cj cams. so I put in the big gap factory set.
First thing I notice? It takes a good second longer to fire up the car here in 10F Michigan cold weather.
should I re-gap these down to 40 or 45?
edit: I just started it after sitting in the cold all night, its 23F now. it actually struggled to start but it started after 2 seconds. drove it around for 35min to warm it up, then tried to start it again and it fired much quicker.. fired up normally.
Thanks!
With the tight plugs I was thinking that 0.035 was too tight to get good efficiency and burning since its basically a stock boss engine w/ cj cams. so I put in the big gap factory set.
First thing I notice? It takes a good second longer to fire up the car here in 10F Michigan cold weather.
should I re-gap these down to 40 or 45?
edit: I just started it after sitting in the cold all night, its 23F now. it actually struggled to start but it started after 2 seconds. drove it around for 35min to warm it up, then tried to start it again and it fired much quicker.. fired up normally.
Thanks!
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