1 Step Colder Than R42LTS?

[TT/Ameasap]

What plug did u end up using?

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AR474

 

[TT/Ameasap]

Double post.

 

[BEATAV8]

Good news. I've been using the AR474 for a couple years now. I also keep AR473 and AR472 on the shelf for track days.

For guys running a stock cast iron head with .406 reach 14mm threads (not TTA or GN1 Alluminum) the AR135, AR 134, and AR133 are good choices. Especially for E85 and high boost.

 

[dvernst]

Good news. I've been using the AR474 for a couple years now. I also keep AR473 and AR472 on the shelf for track days.

For guys running a stock cast iron head with .406 reach 14mm threads (not TTA or GN1 Alluminum) the AR135, AR 134, and AR133 are good choices. Especially for E85 and high boost.

Steve has a lot of things on his shelf!

 

[tonka]

Good news. I've been using the AR474 for a couple years now. I also keep AR473 and AR472 on the shelf for track days.

For guys running a stock cast iron head with .406 reach 14mm threads (not TTA or GN1 Alluminum) the AR135, AR 134, and AR133 are good choices. Especially for E85 and high boost.

How do the heat ranges on those last three compare to 42s?

 

[BEATAV8]

Delco 42 = NGK 5
AR135 = NGK 7
AR134 = NGK 8
AR133 = NGK 8 (8.5 ish?)
AR132 = NGK 9

Meant to type 14mm 0.460" reach thread in my earlier post. (not .406)

 

[tonka]

And now that I read through all of this again, I see you had already basically stated that, thanks for reposting!

 

[scojack_2001]

Makes me wonder if I should change mine out.

 

[larrym]

I am thinking of trying a non projected tip plug in my slightly modded TR did a little searching and came up with NKG YR5 basically the same as the UR5 I'm running but with a non projected tip. Good choice?

 

[BADDGUY6]

Delco 42 = NGK 5
AR135 = NGK 7
AR134 = NGK 8
AR133 = NGK 8 (8.5 ish?)
AR132 = NGK 9

Meant to type 14mm 0.460" reach thread in my earlier post. (not .406)

Are there any issues running these Non-resistor plugs? vs. Resistor AR23,AR24,AR25?

 

[BEATAV8]

No issues here with the non resistor plugs. Doesn't even effect the radio.