spark plugs
 

I am wanting to try iridium in my bike but was concerned if it would be to hot and scorch my piston top , is that a valid concern or am i just over thinking this thing

Re: spark plugs
 

Don't know the pros & cons of iridium, But I bet they cost more. Just my opinion, but it's a gz you're riding not a top of the range, high compression crotch rocket. Why pay extra for something that's going to be of no benefit whatsoever, when the standard spark plug does its job efficiently, lasts forever, & is what was designed for this cheapo bike. :)

Re: spark plugs
 

i installed iridium plugs on my car and it increased acceleration and the idle was nicer. I was just gonna try it on the bike and if it was better keep it if not im out 9 bux

Re: spark plugs
 

Go for it.. let us know !!

Re: spark plugs
 

You figure at worst it is going to perform exactly the same as a standard plug, and you figure one of them will cost you at least three bucks if memory serves me correctly. so you are only out an extra six bucks and that iridium plug will probably outlast the GZ.

Re: spark plugs
 

i just didn't know if i had to worry about it messing up my piston

Re: spark plugs
 

...

Re: spark plugs
 

...

Re: spark plugs
 

The Vstrom has Iridium plugs in it now. They don't make that big a difference in the way it runs(this bike anyway) but the advantage is the fact that they last so long. Probably never need plugs again for the bike. That is why modern cages have Iridium plugs, no tune ups for years and they just run great. The Iridium tips of the electrodes do not burn off or get munged up like a standard plug.
Had a 96 Ranger with a four banger and 8 plug head. Over 100,000 miles and never missed a beat.

Re: spark plugs
 

You must check not only the length but the heat range of the plugs. You just don't buy one and pop it in, it has to match what's required for the bike.

Re: spark plugs
 

I was gonna get the dr8eix which is the iridium replacement for the dr8ea both ngk plugs

Re: spark plugs
 

I've never seen, either through personal experience or documented material, any real proof that fancy plugs make a big difference on anything... car or bike.

Your ignition system can only output so much juice. The coil and the wires electricals are more responsible for getting a strong spark into the combustion chamber than the spark plug is (assuming the plug is right heat range and gapped properly). If you have upgraded the ignition system to a higher output, then you might be able to squeeze some more "umph" out of an engine with an expensive plug. (assuming, of course that you have already upgraded intake and exhaust and the only thing holding you back from making REAL power is the spark... But for the vast majority of us, that's just not the case.

It's only $9 bucks, so it's not a big deal. And sometimes we just want to mess with stuff so we can feel like we're doing our vehicles come good. I can certainly understand that. But don't do this just because you think it will make the bike faster. With a stock ignition, a fancy plug can do nothing more than a maintained OEM plug can.

Re: spark plugs
 

...

Re: spark plugs
 

The iridiums just last longer so you don't have to bother with replacements, like changing them every year or two in a car or bike is a real PIA or difficult task, they don't necessarily ignite the gas any better than a standard spark. The power is related to the exploding gas in the cylinder, not the hotter, if any, spark you get. If the gas explodes, it explodes, and a good plug will do that. Iridiiums can still get fouled or damaged by improper air/fuel mixtures, they are not immune, just less so than a standard plug.

Re: spark plugs
 

...

Re: spark plugs
 

I have a car like that, actually I have had two of them (the same car, just different years). I have a ford explorer, and it costs well over 200 bucks just to get someone to change the plugs in it, because the passenger side ones are so time consuming even for an experienced mechanic to get to, and virtually impossible for even someone like me with a toolbox full of tools to get to.

Re: spark plugs
 

...

Re: spark plugs
 

Some Ford vehicles came from the factory with a two-piece spark plug that would separate when removed from the engine, leaving the threaded base seized into the head of the engine,requiring removal of the head to get the broken plug out.The aftermarket soon followed with a one-piece plug to solve the problem.
:) :cool:

Re: spark plugs
 

...

Re: spark plugs
 

http://www.denlorstools.com/autoblog/20 ... ad-design/
This explains it very well.

:) :cool:

Re: spark plugs
 

...

Re: spark plugs
 

It was their 3 valve engine that had the problem.The 4.6 5.4 and the 6.8.The two piece spark plug typically comes apart, separating the main part of the spark plug from the huge electrode shield. Leaving the shield & electrode seized in the head.

:)
http://s2.postimage.org/193298zz8/Fo...g_Problems.jpg

Re: spark plugs
 

Many of the newer vehicles have wireless ignitions systems with separate coils on each plug. Adds to efficiency and no need to replace wires that are probably the weakest point in the ignition system for many engines.
As an example of plug efficiency for a bike I had a wonderful surprise years ago. I fouled a plug on my KDX 200 two stroke. Popped in the spare plug, Platimun tipped or whatever was the apparent best according to opinion. Made the bike run like it was suddenly drinking steroids for fuel. The bike actually scared me for a while until I adapted to it's new found power and response.
I doubt that will be the case in more modern engines as the manufacturers try for the most efficiency. In the case of the GZ I would think it might benefit from a better quality plug. It is a price point bike and any higher quality/efficient plug might make a difference.

Re: spark plugs
 

Yeah well when you buy used cars you buy what is in your price range that runs good, doesn't really matter much where the spark plugs are, plus I had already owned one and knew what I was getting into this time.

Re: spark plugs
 

...

Re: spark plugs
 

...

Re: spark plugs
 

...

Re: spark plugs
 

Yep.Your exactly right. :cool: :)

Re: spark plugs
 

[quote=Gz Rider]A two stroke is so inefficient anyway, I could see a new plug vs. old worn plug making a huge difference. Also a slightly hotter plug might burn a little more of the fuel before the exhaust valve "opens".

I would think the GZ was very efficient as is. It's not like we are blowing unused gas out the exhaust (like a two stroke).[/quote:3kgp5bkc]
Actually the plug that fouled was a fresher standard plug. A very long downhill path with lots of switchbacks and no throttle munged up the plug.

Re: spark plugs
 

...

Re: spark plugs
 

I always made sure that I carried a spare plug when I had 2-strokes. Many was the time I was glad that I did, especially in the days before electric starters. If the kickstart didn't fire it up after the first 4 or 5 kicks, the plugs always used to oil up. Other times they would oil up after hard riding. The older bikes didn't have a separate oil tank, so we had to mix the oil and petrol. A drop too much oil per gallon was another good way to foul the plugs. O_o

Re: spark plugs
 

I have found out about a plug and I am wanting to try it I just cant find a single sparkplug and really dont want 2 of them considering the price of them till i know that they are gonna make a difference. It is called a "Pulstar Plug HE2RT" it is a direct replacement for an NGK DR8EA. I am interested to see if there is any truth to the claims of performance increases as the claim.

Re: spark plugs
 

...

Re: spark plugs
 

better spark but i am almost sure it is a hoax claim, anyway.

Re: spark plugs
 

...

Re: spark plugs
 

Re: spark plugs
 

...

Re: spark plugs
 

I haven't found a single plug yet for that model i am willing to try it once.... even if it is a scam I will know for sure then

Re: spark plugs
 

...

Re: spark plugs
 

can measure responsiveness for torque factors. I.e. I have an issue taking a hill at more than 45-50 it that improved id consider than an increase in torque