Re: spark plug recommendation
[Re: mopar dave]
#1977048
12/27/15 12:49 PM
12/27/15 12:49 PM
|
Joined: Feb 2008
Posts: 715 Central TEXAS!!!!
sr4440
super stock
|
super stock
Joined: Feb 2008
Posts: 715
Central TEXAS!!!!
|
what does "dirty" mean? are there deposits build up on the center porcelain/ electrode? usually a plug is too cold when you have missing under light loads and the plug can't keep the center clean.
Joe
Without Data, you’re just another guy with an opinion.
|
|
|
Re: spark plug recommendation
[Re: sr4440]
#1977056
12/27/15 01:08 PM
12/27/15 01:08 PM
|
Joined: Dec 2007
Posts: 12,589 Great Neck,LI,new york
hemi-itis
I Live Here
|
I Live Here
Joined: Dec 2007
Posts: 12,589
Great Neck,LI,new york
|
Define "dirty",,,,,,,,ae you reading after a high gear jaunt??
HEMI-ITIS has no cure. My condition is fully BLOWN!!
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977095
12/27/15 02:07 PM
12/27/15 02:07 PM
|
Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
|
I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
|
There`s guys runnin 7`s up 14.1.1 but I`d go # 8`s.......
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977096
12/27/15 02:09 PM
12/27/15 02:09 PM
|
Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
|
I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
|
when I say dirty I mean dark brown to black. never foul but just dark in color. the shell is always black at the base of the threads using a 7. street and track. o2 numbers seem to always be in range(12.5-13.1wot) 14.5 idle. iv never been able to do a hard run clean cut pass. they shut the track down til your out of that area at the end of the track. this engines going to the dyno and I need to get some plugs. what do you recommend? Can`t always blame the plugs and need to check out the ign. and carb...................
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
|
|
|
Re: spark plug recommendation
[Re: bonefish]
#1977139
12/27/15 02:42 PM
12/27/15 02:42 PM
|
Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
|
I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
|
this may sound bizzar but has anyone ever tried putting several different heat ranges in a motor at the same time then comparing how they look. Yep, years ago I left Cabs house w/a few different plugs in my 360 and read em and went w/Autolites before switching to NGK`s.........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977244
12/27/15 05:11 PM
12/27/15 05:11 PM
|
Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
|
I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
|
ok Dom. ill get some 8's and see what they look like after dyno time. Dom, how did the autolites work out for ya? They never did BUT, I`ve got my carb tuning skillz coming around so maybe that would change but not willing to start over when plugs are a major part of the tune...........at least the POROPER ones......
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977265
12/27/15 05:45 PM
12/27/15 05:45 PM
|
Joined: Aug 2003
Posts: 43,263 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,263
Bend,OR USA
|
I'm going to try Autoite 3910 in the B1 motor I'm dynoing next month, it has right at 13.0 to 1 compression They have worked well for me in many motors on pump gas with lower compression, I'm one of those guys that likes to run my motor lean with the coldest plug I can keep looking good, clean with no color or speckles The ignition timnig, AFR, and the spark plug heat and tip type all contribute to what the spark plugs look like IHTHs
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977400
12/27/15 09:07 PM
12/27/15 09:07 PM
|
Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
|
I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
|
ever have any luck with the champion cx series with the cut back strap? I have never run the champions but have run the AR series in autolites with the cut back straps,,AR3910 in my small block with 13.0 to 1.0 comp, work's good for me.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977442
12/27/15 10:09 PM
12/27/15 10:09 PM
|
Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
|
I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
|
AR3910, ok. any street driving on that? no, track only, 13. to 1 comp and sunoco supreme fuel, 112 octane, ran them for years with no failure's, even with extended idle time they never hiccuped.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
|
|
|
Re: spark plug recommendation
[Re: mopar dave]
#1977670
12/28/15 02:07 AM
12/28/15 02:07 AM
|
Joined: Aug 2003
Posts: 43,263 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,263
Bend,OR USA
|
ever have any luck with the champion cx series with the cut back strap? I've never seen a set of them, let alone bought a set to use I'm usually looking for the best bang for the buck, not the latest, greatess, trick race part of the year AKA I've never thought about trying them, I have used some of the C57YC and maybe a set of the C61YC, if that is a good Champion part number I drove my low compression pump gas Duster on the street with both the AR3911 and AR3910 with no fouling or missing problems running Oregon 91 octane pump swill I ended up trying and using Champion RC12Yc and RC9YC alos, both worked okay, the RC12YC seemed a little hotter than I liked so I ended up using the RC9YC due to the lower cost at the local parts stores on special compared to the AR3910 or 3911s
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
|
|