Can u look at this plug chop ?

[86_Notch]

Ken Oconnor ported motor
+3 stroker
lightened flywheel
v force reeds
factory 7 air box, no lid, uni filter
F 7 pipe
35 mm Keihin pwk

160 main jet
50 pilot
needle on the 3rd clip
air screw 1 1/2 turns out

These are all the same plug and my camera phone sucks

 

[Awk08]

thats as peachy as it gets IMO.......time to rip it !!!!!

remember though, that was at what air temp ???
if it's 20+ degrees colder out, i'd jump up one size main, or stay home

 

[slickerthanyou]

I think it looks perfect maybe drop one size , but i ride on the rich side myself.

 

[86_Notch]

I just did it today, I broke the motor in with a 165 main and 52 pilot. It seems to run a lot better with the current jets but I haven't been ripping I only ran wide open to do the plug chop.

 

[86_Notch]

One more thing, I'm running a colder b7 plug instead of an 8 does that matter ?

 

[slickerthanyou]

Pretty sure a 7 ngk is hotter. a 9 is cooler

 

[Awk08]

One more thing, I'm running a colder b7 plug instead of an 8 does that matter ?

i believe that does matter, do another one with a stock b8es
plus that 7 may foul easier ??

 

[brandoz28]

NGK is backwards!


the lower the number, the hotter the plug, the higher the number, the colder the plug


what does the ground strap look like on the plug too?


I know KOR usually recommends a -9 plug with a his redesigned heads. when you do this, you may have to drop the jet size since it's going to be a little cooler in the chamber

 

[Awk08]

that is correct, my bad, 7 is hotter, way to keep an eye on my old senile ass !!!!!

i'd still do one with the stock b8es, then switch if you feel the need to

 

[86_Notch]

Thanks for clearing that up, I know in my mustang the lower the number the colder the plug. I usually run autolite 24 on the motor and 23s on the spray. What would I do without you guys ? lol , I'mma get some 8s and try another chop .

 

[brandoz28]

Thanks for clearing that up, I know in my mustang the lower the number the colder the plug. I usually run autolite 24 on the motor and 23s on the spray. Thanks guys, I'mma get some colder plugs .

yup, autolite and ac delco do it that way, i think even champion does. NGK is the odd duck.