Gt40 P People!

[Car RamRod]

what do you gap your plugs at?
Thanks.

 

[Car RamRod]

annnd.....

 

[crazypete]

.045 side gapped. But I have a crane hi-6 and that makes fat enough sparks even at .045 gap

 

[Car RamRod]

im on stock ignition. What do you guys suggest for that?

 

[DMAN302]

.054 stock gap should be no problem..that's what I ran with my original engine, and the one in my signature.

 

[Car RamRod]

hmm. Well the ones I took out were .045, and it ran well with those, so I gapped the new ones just a tad under (assuming the old ones were worn down).

 

[crazypete]

I took the new plugs from the box and the gap was .045 so I was like....looks good to me. Works just fine. Running 19 degrees timing and getting good combustion.

 

[Car RamRod]

wow 19 degrees? Im assuming you run 93 octane.

 

[z9_87]

.054, I wouldn't go under .045

 

[millhouse]

.028

I believe .054 is stock though.

 

[crazypete]

No thats 87 pump gas. I think when I relieved the valves and polished the chambers and smoothed the plug boss and I might have also used a thicker gasket by accident...I'm thinking I lowered the compression by half a point. I've had it up to 24 degrees (!!!?!?! I know) but performance seems to drop off after about 19. I'm also running 4oz/10 gal acetone to increase combustion effectiveness and the car is light running 4.56's so engine load is never that high. I cant seem to ever get it to really ping. I supposed I should be happy about it.

 

[Car RamRod]

I wouldn't go under .045

the plugs I took out were at .045, so thats what I put the new ones in as. Ill see how they work.