I’m just wondering what the non-modified spark plug gap is supposed to be. I’ve seen 1.3 all over the place (what’s that in inches by the way) and some people say 1.1 (this also in inches.) I hope that this thread will be a reliable source to check for these kind of things so if you aren’t sure on your information don’t post!
Also, most bolt-on GSR’s won’t need to mess with the spark plug gap. Well since most people don’t just leave their GSR’s close to stock, should you raise the gap or lower the gap? For an N/A engine you’re supposed to raise the gap slightly, where as a forced induction engine would lower the gap slightly, correct?
Now my real concern is this. My motor has higher than stock compression. I’m going turbo in the next 4 months or so and my gap will need to be lower. Well I’ve read it’s VERY bad to raise the gap too big than try to lower it back to the size you want it at. I need to replace my plugs right now and I won’t be turbo for awhile. So what would be an accurate gap for a higher than stock compression GSR that will also work with a higher than stock compression GSR that will be turbocharged?
Now one thing you could tell me is to run the higher N/A plug gap until I go turbo, then buy a second set of plugs and gap them lower for the turbo setup. For reference purposes, just answer the question!
The plugs I’ll be using are NGK BCPR7E-11 which come gapped at 1.1 (given by the 11 at the end of the model number), they’re one step colder and hench are used for forced induction applications. Numerous reviews show that OEM wires are very closely comparable to NGK wires but OEM wires do happen to be the better wire at the end. Especially when used for many years.
i checked the sticker on my hood when i popped up
and it show the stock gap should be 1.3mm (.052) using platinum plugs
so i dont understand why u guys are saying the stock gap is 1.1 (.040)?
by the way, i took out my spark plug, which was set at 1.3mm gap, and i saw the 90degree bend at the end of the spark plug, it was kinda white… so now i’m lowering the gap to 1.1 and see if it’s gonna be better