Re: Spark Plug
[Re: DusterKid]
#1739560
01/27/15 12:19 PM
01/27/15 12:19 PM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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So r u saying they really broke or are they wore out? If they actually broke from contact then that`s a whole nother deal.......
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.....
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Re: Spark Plug
[Re: DusterKid]
#1739561
01/27/15 12:29 PM
01/27/15 12:29 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If they were burnt off thats one thing.. most times when they break off they break at the weld point .. tell us if they are burnt off... lets see a pic.. also if they were hit by the piston they would be bent down EDIT I run that same plug in my street/strip 416 with 10.4 compression.. also make sure you didnt put in the AR3924... thats the short ground strap for racing
Last edited by MR_P_BODY; 01/27/15 12:35 PM.
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Re: Spark Plug
[Re: MR_P_BODY]
#1739562
01/27/15 09:00 PM
01/27/15 09:00 PM
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Joined: Jan 2005
Posts: 1,774 Keymar, MD
DusterKid
OP
top fuel
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OP
top fuel
Joined: Jan 2005
Posts: 1,774
Keymar, MD
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I didn't see where they made contact with the piston to bend or brake. The 3 plugs picture were list this, the other 5 were normal. Since all the plugs had the same about of runs on them, if they were worn, wouldn't all of the plugs be about the same or no? Here are a few pictures. [image] [/image] [image] [/image]
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Re: Spark Plug
[Re: Thumperdart]
#1739564
01/28/15 01:08 AM
01/28/15 01:08 AM
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Joined: Jun 2003
Posts: 9,225 Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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I use to run that plug when they were made in USA. When they started to be made in china or wherever, i will say around 2005, I quit buying them and started buying the AR plugs. I have never seen that happen and I have seen pistons hit plugs but it usually just bends the strap
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: Spark Plug
[Re: DusterKid]
#1739566
01/28/15 01:03 PM
01/28/15 01:03 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I see weld splatter on the one washer... but those ground straps look like the material is messed up.. they look like carbonized.. the grain structure looks really goofy.. I would say that it burnt off.. was it the same cyls that did it a second time
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Re: Spark Plug
[Re: MR_P_BODY]
#1739567
01/28/15 01:21 PM
01/28/15 01:21 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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Kinda off topic but why are you mixing race gas with that compression. Did you ever do a cranking compression test?
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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