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Plug reading ? #1671050 09/14/14 10:01 PM 09/14/14 10:01 PM
Joined: Jul 2010 Posts: 138 Mcgregor, Ia 4 493RT OP member
493RT OP member 4 Joined: Jul 2010 Posts: 138 Mcgregor, Ia	Could someone read/decifer my spark plug. Its a Autolite 3924. 8270111-20140914_184638.jpg (114 downloads)

Re: Plug reading ? [Re: 493RT] #1671051 09/14/14 11:09 PM 09/14/14 11:09 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I can say one thing... you have too much timing

Re: Plug reading ? [Re: MR_P_BODY] #1671052 09/14/14 11:36 PM 09/14/14 11:36 PM
Joined: Jul 2010 Posts: 138 Mcgregor, Ia 4 493RT OP member
493RT OP member 4 Joined: Jul 2010 Posts: 138 Mcgregor, Ia	Thanks Mr.P , I just switched to a bigger 950 Holley carb, had a thremoquad on it before and it pinged like crazy. I should probably put new plugs in it and it check it then. Is the autolite 3924 a good plug to run . This is on my 493 with edelbrock performer RPM heads ?.I was thinking my timing is at 37 deg. total . Also running 110 octane. Thanks for the feedback

Re: Plug reading ? [Re: 493RT] #1671053 09/14/14 11:54 PM 09/14/14 11:54 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	I'm running that plug in my SB at 10.4:1

Re: Plug reading ? [Re: MR_P_BODY] #1671054 09/15/14 12:12 AM 09/15/14 12:12 AM
Joined: Jul 2010 Posts: 138 Mcgregor, Ia 4 493RT OP member
493RT OP member 4 Joined: Jul 2010 Posts: 138 Mcgregor, Ia	Ok , thanks. I'll get some new plugs and back the timing down a couple degrees . Thanks again, I'm sure I will be back with some more questions.

Re: Plug reading ? [Re: 493RT] #1671055 09/15/14 12:30 AM 09/15/14 12:30 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	It might take a run or two but look for the color to be in the middle of the bend on the ground strap

Re: Plug reading ? [Re: MR_P_BODY] #1671056 09/15/14 12:27 PM 09/15/14 12:27 PM
Joined: Jun 2006 Posts: 5,162 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,162 CT	Heres a question, I've seen this on plugs in some engines myself and never knew what to make of it; why does it look "fuzzy?" Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: Plug reading ? [Re: GTX MATT] #1671057 09/15/14 12:30 PM 09/15/14 12:30 PM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: Heres a question, I've seen this on plugs in some engines myself and never knew what to make of it; why does it look "fuzzy?" Most of what your seeing is the fuel additives

Re: Plug reading ? [Re: MR_P_BODY] #1671058 09/15/14 12:32 PM 09/15/14 12:32 PM
Joined: Jun 2006 Posts: 5,162 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,162 CT	Quote: Quote: Heres a question, I've seen this on plugs in some engines myself and never knew what to make of it; why does it look "fuzzy?" Most of what your seeing is the fuel additives Figures Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: Plug reading ? [Re: 493RT] #1671059 09/15/14 01:54 PM 09/15/14 01:54 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Thanks Mr.P , I just switched to a bigger 950 Holley carb, had a thremoquad on it before and it pinged like crazy. I should probably put new plugs in it and it check it then. Is the autolite 3924 a good plug to run . This is on my 493 with edelbrock performer RPM heads ?.I was thinking my timing is at 37 deg. total . Also running 110 octane. Thanks for the feedback That`s a hot plug for your combo in my opinion...........it`s like a #5 in NGK and the band you see on the ground may move closer to the middle of the ground strap if you go to a # 7............That plug looks hot and nasty. Try a 7, post a pic and see what happens. 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: Plug reading ? [Re: GTX MATT] #1671060 09/15/14 03:13 PM 09/15/14 03:13 PM
Joined: Jul 2010 Posts: 138 Mcgregor, Ia 4 493RT OP member
493RT OP member 4 Joined: Jul 2010 Posts: 138 Mcgregor, Ia	Quote: Quote: Quote: Heres a question, I've seen this on plugs in some engines myself and never knew what to make of it; why does it look "fuzzy?" Most of what your seeing is the fuel additives Figures Might be a little bit of anti seize towards the end of the threads...

Re: Plug reading ? Updated [Re: Thumperdart] #1671061 09/16/14 10:17 PM 09/16/14 10:17 PM
Joined: Jul 2010 Posts: 138 Mcgregor, Ia 4 493RT OP member
493RT OP member 4 Joined: Jul 2010 Posts: 138 Mcgregor, Ia	Changed to Autolite 3922 plug. I also left the timing alone. Heres a picture of the 3922 plug 8272301-20140916_185938.jpg (58 downloads)

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