spark plug selection - Moparts Forums

Register Log In Moparts Forums Unlawfl's Race & Engine Tech spark plug selection

Print Thread

spark plug selection #457858 09/02/09 08:49 PM 09/02/09 08:49 PM
Joined: Feb 2006 Posts: 2,379 MD Kevins493 OP top fuel
Kevins493 OP top fuel Joined: Feb 2006 Posts: 2,379 MD	What spark plug should I be running? 493ci, 12:1 compression, Indy 440-1's, .690/.690, 278/284 @.050 roller on cam2 110. Thanks!

Re: spark plug selection [Re: Kevins493] #457859 09/02/09 11:47 PM 09/02/09 11:47 PM
Joined: Aug 2003 Posts: 43,292 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,292 Bend,OR USA	Lots of choices, I like the Autolite AR3911 and AR 3910, other guys on here like the 3923 and 3922 champion C63Y and C59Y is a good choice also, probally harder to get now NGK has a large selection also depending on which type end you want, extended gap or flush gap. I like extended gap, puts the spark into the hole Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: spark plug selection [Re: Kevins493] #457860 09/03/09 02:55 PM 09/03/09 02:55 PM
Joined: Jul 2004 Posts: 19,318 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,318 State of confusion	I`ve tried most plugs out there and the ngk`s seem to look the best and last the longest in my 12.11 comp. 470 w/a 275-280 @ .050 solid roller. 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 selection [Re: Thumperdart] #457861 09/03/09 03:21 PM 09/03/09 03:21 PM
A Anonymous Unregistered
Anonymous Unregistered A	got pretty much same setup as you NGK 5672A-8 for flat top pistons NGK 5671A-8 for dome pistons. IMO nothing else works like a NGK. 5460041-63PLYMOUTH65DODGEA99068HEMIROADRUNNER028.JPG (82 downloads)

Re: spark plug selection #457862 09/03/09 05:50 PM 09/03/09 05:50 PM
Joined: Jan 2003 Posts: 16,931 NC 440Jim I Live Here
440Jim I Live Here Joined: Jan 2003 Posts: 16,931 NC	Quote: got pretty much same setup as you NGK 5672A-8 for flat top pistons NGK 5671A-8 for dome pistons. IMO nothing else works like a NGK. That is good advice, and a 493 at 12.0 CR is likely flat top. With that much cam duration, "low" CR, and aluminum heads, you can even run the cheapo NGK BCP7ES or BCPR7ES. They aren't race plugs, but I ran them at 12.2 CR (but the -8 race plugs are fine too). 1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1

Re: spark plug selection [Re: 440Jim] #457863 09/03/09 05:52 PM 09/03/09 05:52 PM
A Anonymous Unregistered
Anonymous Unregistered A	Quote: Quote: got pretty much same setup as you NGK 5672A-8 for flat top pistons NGK 5671A-8 for dome pistons. IMO nothing else works like a NGK. That is good advice, and a 493 at 12.0 CR is likely flat top. With that much cam duration, "low" CR, and aluminum heads, you can even run the cheapo NGK BCP7ES or BCPR7ES. They aren't race plugs, but I ran them at 12.2 CR (but the -8 race plugs are fine too). Jim, i use the BP7ES NGK plugs in my 581 hemi with 11.7 compression, they work great as well. 5460323-65PLYMOUTHHEMIINTERIOR,ENGINECOMPARTMENT,KELLYSINJURY061.JPG (71 downloads)

Re: spark plug selection #457864 09/03/09 06:21 PM 09/03/09 06:21 PM
A Anonymous Unregistered
Anonymous Unregistered A	NGK all the way! Ask the guys that stand around a dyno all day and I bet that's the answer you get--Extended whenever you can!

Re: spark plug selection [Re: Cab_Burge] #457865 09/04/09 11:53 PM 09/04/09 11:53 PM
Joined: Feb 2006 Posts: 2,379 MD Kevins493 OP top fuel
Kevins493 OP top fuel Joined: Feb 2006 Posts: 2,379 MD	Thanks guys! Couldn't get the NGK's in time for some reason but was able to get a set of 3923's..car's not breaking up anymore so I think we can call tonight a success.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1