LUVTruck.com

I'm gonna change the plugs in a couple of days and I wanted to ask u guys which plugs would be the best performance value for my LUV. Thanks a lot.

Im partial to Bosch platinum plugs. They're a little more than a standard plug but they work lots better. Any spark plug grander than that is money wasted unless you have an above average ignition system. For basicly stock motors, i'd go with a set of Bosch plugs.
Dont be suprised if you get about 5 or 6 different replies to this topic.

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Previous setup: 4.1 Buick V-6/TH 350
Current setup: 400 Small Block Chevy V-8/TH 350
9" ford rear end/short bed/blue
What do Water, Electricity and Humans have in common... They all travel the path of least resistance.

Add another vote to Bosch Platinums. I never noticed any kind of performance gain from them (maybe a tad better mileage, but not enough to be easy to notice) but they seem to stay longer. NGKs seem get a lot of build up compared to Bosch plats. My recently purchased Trooper came with Denso plugs in it and while they were pretty clean looking, replacing them with Bosch got rid of a dead miss in one cylinder.

No one I've known who has tried any of the split-fire or other multi-pointed plugs seemed to like them. In several cases they ran worse. Anyone have anything on some of these new Iridium plugs I keep hearing about?

bosch for me too. get the original platinums. don't go with the ones with more than one prong. from what i hear they really suck

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1980 luv sport 4x4 Just a memory now
Frame rusted from the inside. Truck stripped and now looking for a new donor in southern ohio

yup the multi electrode plugs are kinda a waste. Platnum plugs are good becouse they stay good longer and conduct a bit better.

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1980 LUV 4x4, going under re-construction...

Ok you guys can bash me later But I bought a set of the Bosch +4 platinums for my 1.8 and I am gonna tell you they made a hell of a difference when it comes to my gas mileage.... yes it's better now than when I had a set of splitcough cough anyway I also noticed a difference when I go to start it in the mornings especially in the winter( my Luvs a cold hearted thing) I have also noticed that she has a little more get up and go now too!! Well just my two pennies
Later
Husker

huh, thats odd. I heard from a teacher who races that the multi electrode plugs are worthless. But honestly you got more go juice whith the +4s eh. Might have to try em myself and not trust that guy...

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1980 LUV 4x4, going under re-construction...

go with NGKs. you can't beat them in japanese engines

Part of the idea with the Bosch +4 is that the spark is better exposed to the air/fuel mix in the chamber. To my thinking, whether this helps or not would depend on the position of the plug in the chamber, the shape of the chamber, and the flow pattern. From Husker's experience, I guess the older 75 style motor gets something out of having the spark more exposed. With the head and combustion chamber on the 76 and newer motors being completely different, the effect could be completely different as well. I think this is exactly the problem with these more elaborate plugs. On certain rigs, they do great things, but just not on all.

If you change your plugs plenty often, NGKs will work fine. They just seem to build up junk on them a lot faster than Bosch in my experience. Since I tend to be pretty lazy about changing my plugs I go for what keeps running the longest.

A side note, if you fancy an experiment in cleaning your plugs, try some CLR (Calcium, Lime, Rust) mixed about 50/50 with hot water. Find a container you set the plugs into up to the top of the threads at least, and soak the plugs for about an hour or so. I've let some go as long as over night and soaked the entire plug, but the CLR will start to damage the enamel on the plug after too long. The overnight ones still work fine, the top part of the porcelin is just rough and not shiny now. I cleaned one set of really grungy NGK plugs I had sitting around as a test and it removed all of the buildup, even that rock hard stuff that looks almost like cement. For those of us really pinching our pennies, cleaning and regapping plugs can push off the expenses for a while at least, and this way really does work.