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Champion plugs lasted a few months.

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Old Aug 1, 2014 | 03:59 PM
  #16  
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Never have I had an NGK fail on me.

Have had Champion and Bosch crap the bed more than once.
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Old Aug 1, 2014 | 04:19 PM
  #17  
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Originally Posted by cruiser54
Never have I had an NGK fail on me.

Have had Champion and Bosch crap the bed more than once.
Exactly my experience.
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Old Aug 1, 2014 | 05:21 PM
  #18  
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Originally Posted by dmill89
Only on Renix, later (91+) "HO" 4.0L I6s used the RC12LYC / RC12ECC. They are a little hotter than stock for a RENIX but I wouldn't expect them to blow apart like that (especially since they were used in later versions of the same engine).
Granted, but since he's talking about an '88, I figured it best not to confuse the issue. He may well have some detonation going on, too. I run the NGK Iridiums in mine. They do last a long time.
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Old Aug 1, 2014 | 06:50 PM
  #19  
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It's been months and thousands of miles including a camping trip over and back a mountain pass. Never heard ping or detonation. Not saying it didn't happen, I just never caught it if there was any. I have had issues with Bosch and champion plugs more then a few times before in my aircooled VW's so it wouldn't surprise me if it was a **** plug from the store.
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Old Aug 1, 2014 | 07:24 PM
  #20  
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Originally Posted by Mullet Bullet
It's been months and thousands of miles including a camping trip over and back a mountain pass. Never heard ping or detonation. Not saying it didn't happen, I just never caught it if there was any. I have had issues with Bosch and champion plugs more then a few times before in my aircooled VW's so it wouldn't surprise me if it was a **** plug from the store.
**** plugs period. Go NGK.
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Old Aug 1, 2014 | 07:55 PM
  #21  
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You have yet to steer me wrong, I'll have to pick some up tomorrow. Happen to have a part#?
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Old Aug 1, 2014 | 07:58 PM
  #22  
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You might not hear the ping/pre-detonation, but it's there.
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Old Aug 1, 2014 | 08:35 PM
  #23  
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Originally Posted by Mullet Bullet
You have yet to steer me wrong, I'll have to pick some up tomorrow. Happen to have a part#?
FR5-1
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Old Aug 2, 2014 | 01:40 AM
  #24  
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Originally Posted by cruiser54
FR5-1

This is all I will use anymore. Damn good plugs.
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Old Aug 2, 2014 | 06:01 AM
  #25  
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Originally Posted by salad
Looks like detonation from here. Carbon deposits in that chamber I'd guess.
I agree. This damage was caused by detonation. Time to investigate further! Overly hot plugs can actually cause detonation on their own.

Last edited by jdwilliams; Aug 2, 2014 at 06:06 AM.
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Old Aug 2, 2014 | 06:52 AM
  #26  
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Also just had a champion r12lyc fail on me after 1000 miles. What NGK for a 98.
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Old Aug 2, 2014 | 07:03 AM
  #27  
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This is just great. I run across this thread after literally just changing my plugs last night. Went back with the Champion OE part. Hope they last a little while anyway.

Can't win...
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Old Aug 2, 2014 | 07:17 AM
  #28  
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Originally Posted by Marks2000XJ
This is just great. I run across this thread after literally just changing my plugs last night. Went back with the Champion OE part. Hope they last a little while anyway. Can't win...
I'm sure you will be just fine. There are tens of thousands of vehicles on the road right now with champion plugs in them and they are not all parked along the side of the road waiting for a tow. I would put more emphasis on making sure you buy good beer.
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Old Aug 2, 2014 | 07:22 AM
  #29  
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Couple ways to deal with carbon if it concerns you.

Use BG 44K in the fuel tank per the directions.

Or de-carbon the pistons/valves using water.
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Old Aug 7, 2014 | 08:48 PM
  #30  
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Originally Posted by southsidecatac
I'm sure you will be just fine. There are tens of thousands of vehicles on the road right now with champion plugs in them and they are not all parked along the side of the road waiting for a tow. I would put more emphasis on making sure you buy good beer.
I just drove it to Nashville this past weekend and it did fine. Noticed a little increase in fuel mileage as well.
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