Gaping spark plugs

[hsracer]

I am using NGK TR5 plugs for the first time in my 602 crate what should i gap them at. I know the ac delco plugs i gap at .45.

[crate#8]

GM engines don't like NGK plugs to well.Have had some problems with them.Stay with the AC Delcos or an Autolite 104 for a steel head and 103 for aluminum heads.Autolites cheaper and just as good or better that the AC Delcos.Won't fuel foul

[brad hibbard]

GM engines don't like NGK plugs to well.Have had some problems with them.Stay with the AC Delcos or an Autolite 104 for a steel head and 103 for aluminum heads.Autolites cheaper and just as good or better that the AC Delcos.Won't fuel foul

you must be missing something

all we have used since day 1 is NGK

we have tested just about everything on the market and have always ended up with NGK

we don't use the specific crate TR # but the brand is definatly NGK
R-5724-8 or R5724-9

Brad

https://www.race-1.com

[Egoracing]

you must be missing something

all we have used since day 1 is NGK

we have tested just about everything on the market and have always ended up with NGK

we don't use the specific crate TR # but the brand is definatly NGK
R-5724-8 or R5724-9

Brad
www.race-1.com

Ditto, ran and won a lot of races with NGK plugs in our 604.

[Egoracing]

GM engines don't like NGK plugs to well.Have had some problems with them.Stay with the AC Delcos or an Autolite 104 for a steel head and 103 for aluminum heads.Autolites cheaper and just as good or better that the AC Delcos.Won't fuel foul

ANY plug will fuel foul, and if you are fuel fouling plugs don't blame the pluge correct the carb issue.

[swaybar]

you must be missing something

all we have used since day 1 is NGK

we have tested just about everything on the market and have always ended up with NGK

we don't use the specific crate TR # but the brand is definatly NGK
R-5724-8 or R5724-9

Brad
www.race-1.com

Brad, how does either of those plugs compare to the TR-55 in terms of heat range? I always figured both were quite a bit colder than a TR-55 and maybe too cold for the 602. Thanks

[brad hibbard]

To be perfectly honest about your heat range question---I don't know

although we have tested many different plugs on the dyno for power increases ---we have not made extensive research into the actual make up of the different plugs.

when we started this GM crate venture in 2006 ----I immediatly contacted the best in the business for guidence----that was Bill Hendren

and one thing he turned me onto was the NGK R5724-8 and although the R&D never stops we still today feel it is the best plug for both engines

we use some 9's in certain circumstances but 8's will always work

Brad

https://www.race-1.com

[steveshawjr]

we have been running the e3s in our 4cyl car and they seem to work great they fire relay well the car seems to run better with them as well has any of you crate guys tried them yet ? there a cage styel no need to gap

[Egoracing]

we have been running the e3s in our 4cyl car and they seem to work great they fire relay well the car seems to run better with them as well has any of you crate guys tried them yet ? there a cage styel no need to gap

Tried them on a dyno and the power fell off over NGK TR55. We cut the electrode to expose more spark and I believe that the 3 electrodes cover the spark to much.