Talk to me about Spark Plugs...

FWIW I run Autolite AR32's and very happy with them, a 26 sounds to be a very cool running plug.

Autolite has a lookup function, that will cross reference competitors plugs, if you know the competitors part #. Maybe NGK and Champion have similar, although personally I will not use Champion I've had no luck with them in the past.

http://www.autolitecatalog.com/Application.aspx?b=A

Julian

I run Autolite 25s the 24s were too cold for city driving.

Mike

I run Autolite Double Platimum APP 25's.

Dave

quote:

I run Autolite 25s

Same for me.

quote:

Platinum

Dave,

How many miles have you run with those platinum plugs? Is your engine running a carb with those them?

Most owners' experience with a carb and platinum plugs is they tend to foul very easily.

Platinum is generally seen as fine for the controlled fuel delivery of an EFI system, but not so great on the less precise delivery of a carb.

Larry

Larry,

Not very many miles, under 1000 as my car is more garage art. However they have been in the car for over 2 years with no problemo whatsoever. I had even removed them late last year to see if they fouled (as I needed a carb idle screws adjust at the time) and they were perfect.

Still perfect.

I have a 750 Holley Street Avenger. My friend Steve who restored my car was a senior engineer GM Corp (retired) > working at the Mesa fuels test facility. He knows more about carbs, plugs, fuels, etc. than the average bear. If and when I would replace those plugs I would go exactly with the same.

Dave

NGK 2438

quote:

Folks, I am looking to go up a heat range or 2.

Allow me to ask why. I would guess fouling. But it can be hard to tell if fouling is because of too cold plugs or too rich carb.

Also allow me to give you this link to my homepage, it gives step by step guidance to help answer the question above:
http://www.tuningmadeeasy.com/.../spark-plug-reading/

" I am looking to go up a heat range or 2."

Carefull there good buddy ... I had a valve sticking in the guide going up one heat range on plugs ...

AR 32 heat range is std on the cold side and should suit your May Pocono driving just fine a 42 heat range is for the fall and winter..

Pocono ... no we are not in good company.

Ron

Hello Julian...... thanks for the link, i looked but could not quickly find it on my own. My experiance with champion plugs is that they are OK for carberated motors.

Hello Mike........ yes I also found that autolite 24 and 25s are a bot to cold.

Hello Dave....... in the past I had poor results running platinum plugs on a carburated motor... they would run great for a couple of days..... and then they were perhaps not as good as copper plugs.

Hello Indy Dave.............. yes I found that # as well............thanks

Hello Mikael...........short story.......I am looking to get that "very light brown" porcelain color. I am very slowly working my way thru a Accel DFI setup. Right now I have the car up and running, and running fairly well. It is correcting it'self via the oxygen sensor by about 10%. I am slowly starting to tune it via the laptop. The car runs strong starts without hesitation and the plugs are a dark brown. I am heading out to Pocono CSD in the morning for a bit of car show, track time and comerodory with my Pcar budies. Bringing- an extra set of plugs and a set one range up is a precaution. And hey good website, when are you adding the section on tuning electronic fuel injection? Thanks.....

Hello "Super Ron" how have you been? I think AR 32 plugs are racing plugs...yes? what does that mean to me? resistor or something? And -Pocono....what do you mean by that or should I simply say yes YOU ARE good company..... if other, give me a call 973-219-9447 (cell#) or just show up this weekend and bring pictures of your car. going to sleep now.......Thanks to all of you.............. Doug.H

I'll check this again in the morning before I take off.