GTI 130 Spark plugs, Do fancy plugs make a difference?

[Freddyk79]

I noticed that there are high performance spark plugs available for the Gti 130's like my machines.

1. Has anyone ever swapped out the OEM plugs for the high performance version?

2. did they make a noticeable difference?

Was considering giving it a try.

Thanks in advance!!

 

[dsteinmann]

Id Stick with the NGKs

 

[Coastiejoe]

You need to be careful when playing with plugs.

There are resister plugs and non-resister plugs. In the Polaris skis if you run non-resister plugs they run horribly. I have read that Seadoo uses electronics that require resister (I think) plugs. In some cases the plug wires act as a resister and will allow for a different plug to be used.

Going to a hotter plug can eat a hole into the pistons.

If it were me, stick with OEM or OEM compatible plugs...

 

[Sportster-2001-951C-Stock]

Stick with what you have, my NGK's are over ten years old and have been in several skis, still going strong!

One common issue with fancy plugs when they first came out was the tiny unobtanium precious metal dots spot welded onto the spark electrodes would fall off and get stuck between the piston and the cylinder. I stay away from stuff like this.....

 

[Sportster-2001-951C-Stock]

You need to be careful when playing with plugs.

There are resister plugs and non-resister plugs. In the Polaris skis if you run non-resister plugs they run horribly. I have read that Seadoo uses electronics that require resister (I think) plugs. In some cases the plug wires act as a resister and will allow for a different plug to be used.

Going to a hotter plug can eat a hole into the pistons.

If it were me, stick with OEM or OEM compatible plugs...

NGK plugs have an anti-foul spark gap built into the insulator, which tends to make the ignition voltage higher and the plug can zap through the contamination better when the kneepoint voltage is reached. Many maunfacturers have copied this now, but NGK was one of the first, if not the first to use this strategy.

There's nothing wrong with NGK plugs, IMO, seadoo tuned the engine to use these and that's what I'm going to use. I might try a hotter range in my 2 stroke though, to see how it does, but there'a really no reason to since the factory heat range doesn't foul. I'm kinda curious though, so will probably try it, I don't think the BR7 would be too hot.

In the case of a four stroke, I don't think the insulators take on any film coloring, the soot ring is way down inside the shell where it should be and to see it, you have to hacksaw the plug. At least that's what I see on the Yamahaha's.

 

[Freddyk79]

OEM plugs it is!! Great info as always guys! thanks again!