Thread: HOW TO: Index Your Spark Plugs

Interesting idea of having it towards the exhaust valves... that could possibly be the case too?

I do find the Pulstar Pulse Plugs interesting... they cost a little too much though

I did pay $16 per plug for my plugs. I bought the Iridium IX ones, with a Sonic Sound hole, that supposable helps break down the gas... More info on the plugs can be found here



The first time I've seen this was on the CarBibles.com, it got me interested so I started to researching it more and think even if it gives you a little HP, it's worth it, esp for NA

No problem, my job is to spread the joy amongst the community



Interesting! I think we should look at any tricks and try them on our cars, I mean what do we have to loose?

Next trick will be Side gapping, that trick has been in use since the 1950's, so will see if it's any good for our cars

Now one thing though with using indexing washers, you will be changing the distance of the spark plug, how low it is sitting inside the cylinder that is... That may or may not be a good thing hehe.

I heard that there are the longer spark plugs, and that using them in our SR's is not a good idea, because they might get cough by the Piston...

Right now I indexed my plugs on two sets of washers, the original ones and the Indexing ones. I will then try to get rid of the original washers and just use Indexing ones. Will see which setup our SR's like more

I dunno man. Fancy plugs always end up being snake oil in SR20s. We have a heck 'uvan ignition from the factory. I pay $.99 for coppers and swap them every second oil change.



I wonder which direction you would want to index them for turbo cars. Boost can blow out a spark if you are incorrectly gapped.


ed; Don't get me wrong Vadim. I am intrigued and interested in your efforts.

No worries Benito Malito, you do bring a good point, boost could possibly put out the spark...

I agree about most plugs being snake oil, not only in SR's. What shocks me is the fact that my Bosch +2 plugs, even though are very frowned upon in our community, work better then NGK's do in my car. At least gas mileage wise. I'm hoping the Iridium NGK's can beat them while being indexed though

so whats the verdict of this ? doe sit work >?

Haha not sure, I have a ScanGauge II now so now I can actually test and see if it actually works

well test and see and report ...i want to see if this is actually work it ?

Will do, I probably will be conducting this test with my Newly bought NGK BKR6E's.

Thing is, I dunno if the information will change right of way, or it will take two weeks of driving for ECU to adopt to it....

any word yet ?

Lol its gonna take longer then that. I cannot do it right now because I need to get my ecu to learn the current setting, so that I could then see what numbers I get etc.