Spark Plugs

[meathead 71]

second that try pep boys, auto zone, advanced parts i believie i paid 11.00 a peice fro my opti's

[Joenic]

second that try pep boys, auto zone, advanced parts i believie i paid 11.00 a peice fro my opti's

Last year I paid about $6 a plug for NGK's for my F225 at Napa.

[oceandansar]

advance auto parts is the cheapest I have found for NGK's and my local store will order for me if they don't have enough in stock. I was having trouble with my Rhino hard to start I read about an NGK iridium plug, called advance with the # and they ordered two plugs for me cheaper than I found online.

[CoveHunter]

One word of caution I learned from a "Senior Toyota Motor Engineer". Use the same type plug that came with the motor. You will not gain any performance from a high dollar "designer plug". A plug that performs any different than the ignition was designed for will cause engine damage. He claimed, most production engines failures are mostly damaged from using; 1. incorrect gas octane , 2; incorrect (designer plugs), 3; and lack of changing oil.

The ignition controller / computer does not re-computate for change of spark ignition, nor burn rate by octane. (Hope i have relayed this correctly) Stick to OME for best / long lasting performance.

The gas rating I found the hard way using highest rating every 3rd fill up thinking it will clean and burn better. The BMW dealership asked me (years ago) was I using hi-test gas, and they showed me how they could tell. I burned the valves up.

[Strrykerr]

I rely on www.sparkplugs.com as a guide to pricing and cross refrences.

GP

[triumphrick]

I rely on www.sparkplugs.com as a guide to pricing and cross refrences.

GP

Cool site!! Thanks, Stryker!!

[rasbill]

I 2nd the Advance Auto suggestion. I have been buying online, and just for the heck of it tried my local Advance Auto, thinking there was no way they would have them in stock - but they did. NGK LFR5A11 for my Yam F225 were $4.49.

[ScarabChris]

I rely on www.sparkplugs.com as a guide to pricing and cross refrences.

GP

Ditto! I get my plugs from them as well. The plugs for the E-Tecs are priced high also. The dealer wants around 12.00 each but I got them from sparkplugs.com for 9 bucks and change each.

[north coast]

One word of caution I learned from a "Senior Toyota Motor Engineer". Use the same type plug that came with the motor. You will not gain any performance from a high dollar "designer plug". A plug that performs any different than the ignition was designed for will cause engine damage. He claimed, most production engines failures are mostly damaged from using; 1. incorrect gas octane , 2; incorrect (designer plugs), 3; and lack of changing oil.

The ignition controller / computer does not re-computate for change of spark ignition, nor burn rate by octane. (Hope i have relayed this correctly) Stick to OME for best / long lasting performance.

The gas rating I found the hard way using highest rating every 3rd fill up thinking it will clean and burn better. The BMW dealership asked me (years ago) was I using hi-test gas, and they showed me how they could tell. I burned the valves up.

Hmm, doesn't higher octane burn slower ,thus cooler?I don't really know, but this is what I was told by a mechanic.

[andypanda]

Hmm, doesn't higher octane burn slower ,thus cooler?I don't really know, but this is what I was told by a mechanic.

My understanding of octane is it is the propensity of the gas to ignite earlier. This does NOT mean burn hotter, cooler, larger 'burst' but just that it takes less energy to start the ignition of the fuel. Higher octane combusts earlier given the same energy (spark) to ignite the fuel. So using higher octane will actually advance the ignition timing in engines to a small degree.....But I'm no mechanic..Can someone confirm?