Which sparkplugs do you prefer?

[nolanator]

I'm running NGK UR5 plugs. They are the ones that came in the car when I bought it. I was just wondering what opinions you all have on these and other plugs and if you gap them to a certain spec or put yours in straight out of the box.

My mod list is in my sig, and my car runs on 91 octane.

 

[Nick Micale]

With your build, that NGK plug will be fine with a gap .o32-.035".

I only use NGK plugs for street or strip turbo cars as I have had various issues with other name brands as most are now made off-shore, and their quality has suffered lately.

 

[TurboTdr3.8]

I like the NGK and ND plugs seems to work very well in my application .

 

[getdowngranny]

NGK YR5. They are the same as the UR5's but are recessed tipped plugs. In my opinion I think they are a better choice then projected tip plugs on turbo and nitrous applications.


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[nolanator]

You gentleman, as well as many others on here, have a wealth of information. Thank you.

 

[Mr.Spool]

I was just wondering what opinions you all have on these and other plugs and if you gap them to a certain spec or put yours in straight out of the box.

nothing wrong with an ac delco or autolite plug,i have run them all.i would recommend gapping them down.

 

[Royal-T-Ltd]

I also use NGK UR5s and love them - no issues so far…. over 15 years of use


aaron

 

[V6sleeper]

I use NGK's and Autolite 23's ..never any problems w/20-24psi on average.

 

[machinegun]

well Im that old school old guy.

For years I have run the AC delco CR42TS or CR43TS. After over a decade and a half they still seem to be getting the job done with no issues. I gap them at a tight 32.

I have heard nothing but good about the NGK's but as long as the ac's are working ill probably still keep using them.

 

[Chuck Leeper]

For years I have run the AC delco CR42TS or CR43TS. After over a decade and a half they still seem to be getting the job done with no issues. I gap them at a tight 32.

Yep..

 

[precizion818]

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[TT/Ameasap]

I have run Autolite,NGK, and AC Delco on my current car. I find the AC Delco plugs have quality issues more than any other.