What kind of spark plug are people running on Stage II? It’s time to replace mine and no one around stocks the Nology G4YS plugs that DMCF installed. I was thinking of using NGK 3186. Anyone have experience running this plug?
Posts: 743
What kind of spark plug are people running on Stage II? It’s time to replace mine and no one around stocks the Nology G4YS plugs that DMCF installed. I was thinking of using NGK 3186. Anyone have experience running this plug?
Location: Fresno, CA.
Posts: 1,382
My VIN: 16409
From what I’ve heard and my personal experience, the OE Bosch silver spark plugs are the best. You can get them on RockAuto for about $5 a plug. The part number is HR6DS.
Chris Miles
For Better or Worse I own a DeLorean!
1983 Grey Manual, VIN #16409, Fresno, California
Posts: 743
Yes, that’s my understanding as well. However, I think there’s a reason why DMCF used Nology plugs. Different heat range? Different gap? Whatever the reason, I’d like to match the Nology plugs.Originally Posted by Chris 16409
Location: Northern Michigan
Posts: 1,147
My VIN: 1880
Club(s): (DCO) (DCUK)
From what I’ve heard, the quality of Bosch is suffering in recent years. I am currently using Autolite XP103 Iridium XP plugs gaped at .024 (at the suggestion of DPI) and they are performing fantastically. Available on Amazon Prime and probably in all auto parts stores.
Last edited by Patrick C; 02-27-2020 at 01:32 PM.
Patrick C.
VIN 1880
Posts: 743
Awesome, thank you. Found some locally!
Last edited by CFI; 02-27-2020 at 01:34 PM.
Location: Northern Michigan
Posts: 1,147
My VIN: 1880
Club(s): (DCO) (DCUK)
Great! Gap them at .024 and you’ll be set!
Patrick C.
VIN 1880
Location: Farmington Hills MI
Posts: 359
My VIN: 2203
Club(s): (SEDOC) (DCUK)
I run NGK plugs. Before, with the OEM style Bosch ones, I always had a weird stumbly misfiring idle. The NGKs have been rock solid!
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