NGK Plug Gapping
NGK Plug Gapping Im getting ready to put ina set of NGK V-Power pulgs and i hear that there is a lot of dispute on what i should gape them .50 or .55 and if you go ither way and why.....
On The Tree
Joined: Jul 2005
Posts: 122
Likes: 0
From: Bay Area, California
I gapped my NGK tr55 v-power plugs at .055 on the ss, the car seems to be running alot better than the factory plugs(car has 30k miles). I also changed wires to MSD 8.5mm wires. I gapped them at .055 because thats the factory setting.
Originally Posted by camaross305
i did mine at .50...i think anywhere from .50-.55 is fine
The actual gap is .050-.055" I don't think i want a 1/2" plug gap, need a lightning generator to ark that badboy. We would be asking questions about PTP (plug to piston) clearance
I read somewhere that NA applications need to close the gap .005 for every 50-100hp over stock or somthing like that. Someone else chime in who knows somthing about this.
Joined: Nov 2001
Posts: 34,628
Likes: 2,547
From: Schiller Park, ILL Member: #317
Stock gap is .060.
I've tried gaps everywhere from .050 to .060 with the TR55s and seen no real changes so I usually just split the difference and go .055.
I've tried gaps everywhere from .050 to .060 with the TR55s and seen no real changes so I usually just split the difference and go .055.
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Are these plugs all gapped identically? I checked the gap on a few when I bought them at Advance auto, and they seemed to be gapped at .055 - I probably should check the gap on every one to be safe though, right?
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