Plug gap Q

[MONMIX]

doing plugs and wires in a few weeks, got the Motorcraft Platinums
and set of 8.5 Jacobs

What is the plug gap for a 2000 SOHC ?

Also Jacobs says that due to their " extra efficent energy transfer "
I could gap my plugs 0.005" wider for a more efficent spark.

What do you all know about this ?

 

[jimbo74]

for the hi perf ign systems you can gap the plugs more

 

[MONMIX]

and more means,,,,,,,,,, ?
I don't know where to gap them to begin with

 

[Rhett]

Also Jacobs says that due to their " extra efficent energy transfer "
I could gap my plugs 0.005" wider for a more efficent spark.

What do you all know about this ?

Yeah, a Jacobs rep told me that too, about 3 years ago when I was getting my wires. I gapped the plugs out to .065 at one point (stock for my engine is .054") . I didn't notice much difference. I may try it again sometime though.

 

[MONMIX]

ttt

 

[james t]

All of the 4liter OHV's, the 4liter SOHC's, and the 5liter V8 share the same gap. Its .054

 

[97BlackX5.0]

is there a benefit to gapping wider or tighter... i gapped mine at the recommended .54 even though the box of plugs said that gapping was not necessary

 

[davidmmm69]

the few times i checked the gap it has always been correct in the box,,
now i just buy the plugs and install them usually....

 

[Rhett]

is there a benefit to gapping wider or tighter... i gapped mine at the recommended .54 even though the box of plugs said that gapping was not necessary

Most plugs made today say that on the box because most manufacturers gap the plugs at the factory. Saves you the trouble, I guess.

Well, there is some debate on plug gap...many people claim overgapping will cause an occasional miss, unless you have built ignition/wires to go with it. Others claim it wont do a thing.

Racers have done something called, "side-gapping" where a portion of the business-end of the plug is filed off, leaving a much wider gap. (This tends to foul the plug quickly and isn't recommended for a daily driver.)

I wouldn't under-gap, I've never heard of any advantage to that.

 

[MONMIX]

All of the 4liter OHV's, the 4liter SOHC's, and the 5liter V8 share the same gap. Its .054

Thanks man