Flight Test

It looks like pretty much everyone is going back with the stock plugs for the 65 series motors. Has anyone tried anything else with good results? The following iridium options are available on Rock Auto.

AUTOLITE Part # XP3923 Xtreme Performance (Rebate/Promotion Available!)
OE Style; Gap .032; Requires 2 plugs per cylinder
$4.50

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DENSO Part # 5304 {#IK20} Iridium Plug
Gap 0.044; Long # IK20; Iridium Power Performance Upgrade With World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Ir Alloy (90% Ir); 2
$6.66

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DENSO Part # 3403 {#SK20PRA8} Iridium Long-Life
Gap 0.035; Long # SK20PR-A8; O.E. Recommended Iridium Long Life - Patented Iridium Alloy Plug (90% Ir) With Platinum Ground Strap; 2
$8.49

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NGK Part # 5648 {#IFR6QG} Laser Iridium
.032; OEM/OES Spark Plug
$9.68

Thanks!

shardul

iTrader: (1)

people have had good luck with the NGK plugs.

nola_penguin

I ordered these from sparkplugs.com a few months back and have had zero issues. I replaced both coilpacks at the same time, too.

Following is a summary of your order:
24 - Denso Platinum TT Plug
Stock Number: 4504
Part Number: PK20TT
Unit Price: $3.26
Extended Price: $78.24

Oxygen

Just ordered mine...

radride

^^Do they come pre gapped or does one have to gap them? What gap do you guys gap them to?

R.K.

nola_penguin

the ones I bought didn't come with the proper gap. the updated gap is .07 I think. you can find it here somewhere. haven't had an issue with the ones I bought.