Spark Plug Gap Question


Jorley

Jorley

15+ Year Member

U.S. Military - Veteran
Joined
Feb 28, 2008
Messages
442
Points
3,101
Age
66
City
Crawfordville,Fla.
Vehicle Year
1984
Transmission
Manual
I'm doing the duraspark conversion and got everything done and the engine running.
My question is what effect does the spark plug gap have on an engine? In doing the research on the duraspark I came across an article that said I would need to run a gap between .045- .060.
I'm running about .044 now. Should I go ahead and increase the gap?
 
I certainly wouldn't gap the plug at .060. I think the plugs that go with the Ranger 2.8 are supposed to be gapped at .044. If you go below or above that too much, say .004 either way, you change the angle between the electrode and the anode so much that it isn't flat anymore and you don't get an efficient spark. You can also damage a coil by overheating if you gap the plugs too much as it increases the resistance.
 
trents said:
I certainly wouldn't gap the plug at .060. I think the plugs that go with the Ranger 2.8 are supposed to be gapped at .044. If you go below or above that too much, say .004 either way, you change the angle between the electrode and the anode so much that it isn't flat anymore and you don't get an efficient spark. You can also damage a coil by overheating if you gap the plugs too much as it increases the resistance.
Click to expand...

No, the coil won't overheat, but the higher voltage generated from the larger gap will break down the insulation on the plug wires sooner. Stay with the recommended plug gap.
 
Thanks for the input guys. The sticker under the hood says the gap should be between .042 - .046. I set them in the middle of the range. It seems to be running fine with them where they're at, so I'll leave them there for now and if I do increase it , I'll won't go higher than .046.
 
You must log in or register to reply here.

Sponsored Ad

TRS Events & Gatherings

Where We Were in 2025 – The Ranger Station

Latest posts

Featured Rangers

Want to see your truck here? Share your photos and details in the forum.

TRS Latest Video

Official TRS Merchandise

Follow TRS On Instagram

Latest Album Photos

IMG_4690.JPEG
IMG_4689.JPEG
IMG_4688.JPEG
IMG_4679.JPEG
IMG_4656.JPEG
IMG_4625.JPEG
IMG_4562.JPEG
IMG_4561.JPEG
IMG_4560.JPEG
IMG_4559.JPEG
IMG_4558.JPEG
IMG_4445.JPEG

Product Suggestions

Back
Top