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| RV17YC Spark Plug? https://www.slantsix.org/forum/viewtopic.php?t=14560 |
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| Author: | bwhitejr [ Fri Sep 30, 2005 7:36 am ] |
| Post subject: | RV17YC Spark Plug? |
With a modified engine (9.5:1 compression, 390 cfm carb) do I need to go to a colder plug? The ones that are in it are Chanpion RV17YC. Should I need a RV15YC or something else. This is a daily driver, not a race car. Thanks in advance, bwhitejr |
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| Author: | Dennis Weaver [ Fri Sep 30, 2005 8:10 am ] |
| Post subject: | |
...that's WAY too hot. Of course what works best for you may be different than what works for someone else, you just have to play around a bit. RV12YC ould be a good start. I've got 12's in the 2,3,4,5 holes and 14's in the 1,6 on the SDsix Duster (well, the "Accel" equivalent actually). I run an N12Y (RN12YC) or the Mopar equivalent in my bone stock Kermit ('72 Valiant). Then "N" because it is the older style "plug tube" head, of course. D/W |
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| Author: | featherduster76 [ Thu Oct 06, 2005 2:03 pm ] |
| Post subject: | |
Is there an advantage to running the 14's on the #1 and #6 cylinders?? |
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| Author: | Dennis Weaver [ Thu Oct 06, 2005 2:24 pm ] |
| Post subject: | |
In my case, those two tend to run a little richer than the rest (during warmup, mostly), so I run hotter plugs in those holes to avoid fouling. I think the outboard plugs tend to shed heat a bit better than the other four on an inline six, too.  D/W |
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