C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

'84 - what spark plug?????

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Old Sep 26, 2009 | 08:06 AM
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dchoran
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From: Appleton, Wisconsin Boston originally - North End
Default '84 - what spark plug?????

AC Delco lists three options for the '84:

"2" = Rapid Fire

"41-905" = Platinum

"R45TS" = Standard


Anyone have experience with either the Rapid Fire or Platinum plugs???


(and yes I do know they are more expensive than OEM)


THANKS.

Dave H.
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Old Sep 26, 2009 | 08:38 AM
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blackbear bob
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From: shapleigh maine
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I put in the standard plug and use the rest of the money for
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Old Sep 26, 2009 | 09:13 AM
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dchoran
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From: Appleton, Wisconsin Boston originally - North End
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http://www.boschautoparts.com/sparkp...mIrFusion.aspx

Anybody ever try these BOSCH Platinum IR Fusion plugs???

I know these take away from my money, but after 15,000 miles on a set of stock plugs, one cylinder has an intermittent misfire.

Thinking the plug may be fouling or maybe not gapped right at the half-*** dealership the PO used.

If I'm in there, they're all getting replaced.
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Old Sep 26, 2009 | 12:55 PM
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Originally Posted by dchoran
http://www.boschautoparts.com/sparkp...mIrFusion.aspx

Anybody ever try these BOSCH Platinum IR Fusion plugs???

I know these take away from my money, but after 15,000 miles on a set of stock plugs, one cylinder has an intermittent misfire.

Thinking the plug may be fouling or maybe not gapped right at the half-*** dealership the PO used.

If I'm in there, they're all getting replaced.
Those extra straps on the plugs are bull****. And besides, you can't even gap them. I'd stick with regular copper plugs on the cars that came with them. Though, on my 89, I put in AC Delco. The base of the plugs rusted for some reason. Probably made by Autolite. So, I put the basic copper NGK plugs in.
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Old Sep 26, 2009 | 04:54 PM
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From: Renton WA
Default Spark plugs

My 85 calls for R43CTS. Those will foul out in 1 week. I've used R45TS for years. Seems fine. I recently got Denso 5330 Iridium plugs. Haven't installed yet. Note: I've heard platinum plugs get an electrical resistanant coating on them after burning any gasoline with alcohol in it. Maybe that's why todays coils are so high power.
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