Trey I have a 71 chevelle with a beefed small block and discussed this issue with a bosch guy at a car show one time and the reason for the multi fingers is incase one has a deffect or builds carbon (fouls) you still have 3 more with as you said less resistance. Just what i was told?

 

What size spark plug wrench is used? I have never changed plugs on any car made after 1975
I could look it up, but asking here is funner

My SHO had Platinum tips and I had Ford do the tune up at 120,000. Never tweaked that car. It just ran great for over a decade. My only Ford too now that I reminisce.

 

That sounds like a logical explanation.

Just for the hell of it I called a buddy who is a master electrician and asked about multiple sparks. He said that if the ground points were all the same distance and resistance, then the spark would arc from the center electode to a ground point and then between the mulitple ground points, creating more than one arc of energy in the chamber. Thus there would be improved efficiency.

 

Please don't feel I was getting on your case, just thinking out load and researching on the net at the same time.
It's all good and I appreciate everyone's input.

 

top right corner of the box and the plug is a 4482 and on the post right above the pic

 

Do you have to gap these plugs? Or do you just install with a little anti-seize? Thanks.............Regards

 

pre gapped
just a lil anti seize
i drove 2 times last night and really had fun
about to go out today and have some more fun

i belong to the cobalt forum and did some searching on it and alot of nice things said about the plugs

 

I just change my plugs to these Bosch and like CJ says you can feel it. I hope it helps with just little better gas milage.

 

i am getting no lag at all anymore and today i had to stop and then slam the gas to miss an idiot turning left in front of me and got scratch while rolling,,, it was a shock.

these are nice
mpg would be nice but i want the quick more.

 

I would think the MPG would not get any worse.
Would not the engine run more efficiently with plugs like these that may indeed be burning more of the gas in the chamber. The chamber only gets so much gas and with these platinum plugs the gas air mix should be burning more thoughoughly. Unless of course somehow the computer etc would send MORE gas to the chambers with these plugs?

I'm not sure what the sensors tell the brain. I'm old school where one sees the cause and effect and the path is understood imperically.

I'd get Platinum plugs but not if they cost MPG. Not with today's gas prices.

The performance gain would be nice and if I understand it, there is less midrange hesitation. That is good As this is the area I find wanting in an automatic tranny HHR. My Buick V8 has no such inclination

A freind wants to ditch his PT Turbo and get an HHR . He does not like his MPG. I'm wondering if for him the HHR will be a huge letdown as he will be used to a car with real get up and go. Oh well, life is full of compromises

I told him to get the HHR. He gets at best 19 MPG. I told him I have to work real hard to get that low


Anyway, I guess I'll likely try the plugs as I have had them in several cars through the years. As I mentioned my Ford Taurus SHO came from the factory with platinum tipped plugs ( Not these though ). Ford changed them at 120,000 but I never knew how the car ran with anything else. It was real good on gas considering it was a performance car. About the same MPG as the HHR