Hemi Spark Plugs
#2321248
06/14/17 07:34 PM
06/14/17 07:34 PM
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Joined: Feb 2012
Posts: 4,453
Morristown Tn.
71birdJ68
OP
master
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OP
master
Joined: Feb 2012
Posts: 4,453
Morristown Tn.
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Question? How can oil work its way inside the spark plug tube? I have Stage V heads which have a o ring between the tube and the head. Stock tubes, and stock repo valve covers.
Last edited by 71birdJ68; 06/14/17 07:34 PM.
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Re: Hemi Spark Plugs
[Re: DAYCLONA]
#2321519
06/15/17 09:32 AM
06/15/17 09:32 AM
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Joined: Jun 2015
Posts: 314
Northeast Indiana
73DAD
enthusiast
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enthusiast
Joined: Jun 2015
Posts: 314
Northeast Indiana
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If your spark plugs still have the "compression washer" on them from the plug mfg, then that's your cause 9 out of 10 times, the tube is your "compression washer", on a HEMI you remove the plugs compression washer before installing them, if this is the case, you may be able to rework the tube ends, otherwise if they are badly drawn you need a new set of tubes Why would they be ruined? What is leaving the washer on going to do to them, that a taking it off wouldn't do? If anything, I would expect taking the washers off to have a better chance of ruining the end of the tubes. Not meant to be an aggressive response just genuinely curious. I'm Running RC12YC Champions with the washers in factory heads with a MP plug tube set. I have to take my covers off a couple times a year to lash valves and I see the tube ends every time. So far so good I guess. I have a preset valve adjuster torque wrench that I also use to torque the plugs because its convenient. The 22ftlbs preset may be not enough to deform the tubes possibly...
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Re: Hemi Spark Plugs
[Re: Cab_Burge]
#2321538
06/15/17 10:32 AM
06/15/17 10:32 AM
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Joined: Feb 2012
Posts: 4,453
Morristown Tn.
71birdJ68
OP
master
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OP
master
Joined: Feb 2012
Posts: 4,453
Morristown Tn.
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Let me call Stage V and ask about their tubes. I can feel a resistance when installing the tubes, but it's not very much.
Last edited by 71birdJ68; 06/15/17 10:32 AM.
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Re: Hemi Spark Plugs
[Re: 71birdJ68]
#2321781
06/15/17 08:22 PM
06/15/17 08:22 PM
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Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4
master
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master
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
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My stock tubes fit snug in my Stage V heads. On the spark plug rings, I contacted a well known Hemi builder named Bob George about that, he stated to leave them on, so I did.
it's ok to butt heads, just don't do it with a butthead
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Re: Hemi Spark Plugs
[Re: rowin4]
#2321896
06/15/17 11:38 PM
06/15/17 11:38 PM
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Joined: Jan 2003
Posts: 15,362
Omaha Ne
TJP
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 15,362
Omaha Ne
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Re: Hemi Spark Plugs
[Re: 73DAD]
#2322033
06/16/17 10:08 AM
06/16/17 10:08 AM
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Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,365
Marion, South Carolina [><]
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If your spark plugs still have the "compression washer" on them from the plug mfg, then that's your cause 9 out of 10 times, the tube is your "compression washer", on a HEMI you remove the plugs compression washer before installing them, if this is the case, you may be able to rework the tube ends, otherwise if they are badly drawn you need a new set of tubes Why would they be ruined? What is leaving the washer on going to do to them, that a taking it off wouldn't do? If anything, I would expect taking the washers off to have a better chance of ruining the end of the tubes. Not meant to be an aggressive response just genuinely curious. I'm Running RC12YC Champions with the washers in factory heads with a MP plug tube set. I have to take my covers off a couple times a year to lash valves and I see the tube ends every time. So far so good I guess. I have a preset valve adjuster torque wrench that I also use to torque the plugs because its convenient. The 22ftlbs preset may be not enough to deform the tubes possibly... Curious about this myself. I don't see how the "extra" compression washer on the plug will do any damage. I've been running NGK plugs w/ the compression washers on them in mine forever. Same set of plug tubes since 2006 and I've changed plugs a LOT.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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