Plug Gap ??? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-09-2009, 12:51 AM   #1
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Default Plug Gap ???

I just picked up some ...Bosch Platinum Plus ... Plugs. Guy at the parts store couldnt give me a straight answer on what the gap should be.... 60 or 50 ????
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Old 04-09-2009, 01:03 AM   #2
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.060 Is your engine supercharged? If so, don't use those plugs.
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Old 04-09-2009, 01:30 AM   #3
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No supercharged just a 1993 3.8 L in the vin. So I should be good with these at 60 then ??
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Old 04-09-2009, 02:07 AM   #4
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Quote:
Originally Posted by 293bonneville View Post
No supercharged just a 1993 3.8 L in the vin. So I should be good with these at 60 then ??
Yep .060!
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Old 04-09-2009, 03:12 AM   #5
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still wouldnt run those to save my life
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Old 04-09-2009, 05:58 AM   #6
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those plugs are **** pretty sure they helped ruin my last cars engine.

NGK iridium
or
AC Delco

Last edited by streetfreak; 04-09-2009 at 06:00 AM.
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Old 04-09-2009, 08:00 AM   #7
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The Bosch are known to break down quicker in our waste spark engines. It'* a simple fact that our plugs fire twice, once on the compression stroke and again on the exhaust stroke. This seems to kill the Bosch'rs quick.

You can run them, expect to be replacing them in 2-5 months though. At that time, I'd go with an Autolite or Delco replacement. NGK stopped getting my vote when half their plugs come through with screw on tops. This means it comes loose during heat cycles and causes KR until you track them down and retighten.

I'd rather drive than fight plugs constantly.
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Old 04-09-2009, 08:10 AM   #8
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I recommend Autolites, they cost about $1.50 each and last a long time.
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Old 04-09-2009, 09:06 PM   #9
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Thanks for the replies.
I still have not put them in yet so I am going to return them. Tell me what plugs to buy that are going to last me and be cheap cause I hate changing plug. I paid $2.50 each for these.
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Old 04-09-2009, 09:16 PM   #10
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I just picked up some autolites at my local Menards for $2.58 for 2
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