Does Spark plug increase performance ??

[Pisces69]

You are one of them.

 

 

Hahaha. U r back.

 

Welcome back bro.

 

So any stories to tell abt yr trip?

 

When is e next MU?

 

[Yuan]

Hahaha. U r back.

 

Welcome back bro.

 

So any stories to tell abt yr trip?

 

When is e next MU?

 

I just had a meetup with old friends couple of days back.

 

I am always around lurking.

[Pisces69]

Not read the thread.

But be careful.

The car manufacturer has put in the right spark plug for you motor.

 

If you use another plug then you might well find that it overheats the engine and causes major problems.

happened to me once when I had my car serviced by a guy who really didn't know what he was doing and put in a set of 'high performance' plugs because I was driving a 'high performance' car and my engine blow up.

 

 

Yes good advice u r giving.

 

And i hope u earned a lesson not to trust those mechs. Many r damm idiots not fit to b a mech.

 

I always counter check their work when going to a new mech.

[Pisces69]

dont think "out of the box" sparkplug is pre-gapped for all engines. Some spark plug like denso normal copper sparkplug (K16RU), which is recomended by Toyota owner manual is pre-gapped at 1mm, which is a big diff frm the recomended 0.8mm gap.

 

But guess u r right, i will maintain the gap at 0.8mm as recomended by the toyota.

 

 

U can use e 1mm gap. It wil give u smoother running at normal speeds but if u insist, u can re-gap to 0.8mm but make sure u know how to re-gap correctly as too much off or not correctly done wil lead to problems.

 

I just use straight fm e box fr abt 20 years already n never had any problems.

[Pisces69]

I just had a meetup with old friends couple of days back.

 

I am always around lurking.

 

Lurk lurk lurk.

 

 

Hahaha Come out of e shadows lah. BTW A merry x'mas to u n all e kakis here too.

 

I prob wont post fr a coupe of days cos wil b quite busy next 2 days, uness i got chance to sneak away n can get hold of a computer. Hee.

[Yuan]

Lurk lurk lurk.

 

 

Hahaha Come out of e shadows lah. BTW A merry x'mas to u n all e kakis here too.

 

I prob wont post fr a coupe of days cos wil b quite busy next 2 days, uness i got chance to sneak away n can get hold of a computer. Hee.

 

Busy with .....

[Pisces69]

Busy with .....

 

 

Christmas celebrations lah.

[Tigershark1976]

I think sud b mm bro.

 

And do change new plugs as recommended by manufacturer. Copper plugs r dirt cheap n tysay e easiest n cheapest tune-up is a new set of plugs.

 

Old plugs can leak, ceramic crack n metal fatigue which wil affect yr fc n power.

 

I change my copper plugs[dirt cheap] every 20k km even though ty r still as smooth as when new. I dont re-gap at 10k km cos when u remove, e crushable washer might not give u a good seal when u re-install.

 

Also air blow yr air filter every 10k km service n change at 40k km as recommended. This also affects yr FC. Change more often if u always drive in dusty areas.

 

 

yap.. its mm, typo

[XALmoN]

=)

 

So what is it? I personally believe that, bigger gap means bigger spark means more complete combustion, and that is good for economy.. That's what made sense to me, but of course if the ignition system is not upgraded to take on the extra load caused by a larger gap, that's going to cause some problems.

 

Copper plugs + 1.0mm gap, that's what i use.

[Trex101]

U can use e 1mm gap. It wil give u smoother running at normal speeds but if u insist, u can re-gap to 0.8mm but make sure u know how to re-gap correctly as too much off or not correctly done wil lead to problems.

 

I just use straight fm e box fr abt 20 years already n never had any problems.

 

Don't use off the box, do check the new plugs with feeler gauge, you will be surprise how much diff gap these new plugs come with.

[Mona-vie]

=)

 

So what is it? I personally believe that, bigger gap means bigger spark means more complete combustion, and that is good for economy.. That's what made sense to me, but of course if the ignition system is not upgraded to take on the extra load caused by a larger gap, that's going to cause some problems.

 

Copper plugs + 1.0mm gap, that's what i use.

 

Yes, me believe too!! Bigger gap better!! But my gap is rather limited because mine is turbo and I do not have CDI. Thus I can only go up to 0.35" max. Its because of the mods I did which allows me to use 0.35. Else its just 0.28" only. Anything bigger with stock coil will misfire unless I lower my boost.

[Mona-vie]

Not read the thread.

But be careful.

The car manufacturer has put in the right spark plug for you motor.

 

If you use another plug then you might well find that it overheats the engine and causes major problems.

happened to me once when I had my car serviced by a guy who really didn't know what he was doing and put in a set of 'high performance' plugs because I was driving a 'high performance' car and my engine blow up.

 

Yes and no actually. What plugs you can use largely depends on what you have done to your engine. If your engine is stock form, then you should stick to recommened plugs esp. for the heat range. You can use iridium instead of copper plugs but do not switch the heat range. Too cold will cause fouling, too hot will cause detonation which can blow up the engine in the long run.

 

However, if you have tune up the engine and advance timing etc. Then you usually need slightly colder plugs (usually 1pt colder will do). I increase the boost for my engine and I switch to 2pts colder plugs (using heat range 8 on ngk/Denso scale) to help prevent detonation. Its a little too cold for my settings so I will have to "clean" it at times but running lean for long periods.

[Mona-vie]

Don't use off the box, do check the new plugs with feeler gauge, you will be surprise how much diff gap these new plugs come with.

 

Yes, I agreed. Factory gap is usually not the optimum gap for the car. Thus its best to regap the plug to according to the manual instructions.

 

However, factory gapping do work 99% of the time, thats why most users will not face any issues. its just not the optimum but it will still work.

 

Having said that, manual settings are also somewhat on the conservative side. You can go larger than manual settings w/o much of an issue. Of course, if you create too big a gap, you will face misfiring. Then you have to reduce it back. What gap you should set is based on trial and error so its a little troublesome.

[Pisces69]

Don't use off the box, do check the new plugs with feeler gauge, you will be surprise how much diff gap these new plugs come with.

 

Usually there is a plastic tube to protect e tip so e gap remains as e factory setting.

 

When i open e box, i visually check that e tip was not squashed n that all 4 plugs hv similar gaps.

 

So far after so many years i hv no prob wh e gap. Even if its out a little[which i cant notice] e engine still runs ok. I guess e engine can accept slight diff in gaps n still run smooth.

 

[XALmoN]

factory pregapped plugs seem to be alright..

[Tigershark1976]

Don't use off the box, do check the new plugs with feeler gauge, you will be surprise how much diff gap these new plugs come with.

 

 

yap bro trex, thats y i always have to regap the new sparkplug cos its too much diff from the manufacturer recomendation.

[Trex101]

yap bro trex, thats y i always have to regap the new sparkplug cos its too much diff from the manufacturer recomendation.

 

Yah, i believe it's the factory QC problem but no harm rechecking again before installation, it's fast and easy with proper feeler gauge.

[Mona-vie]

Yah, i believe it's the factory QC problem but no harm rechecking again before installation, it's fast and easy with proper feeler gauge.

 

No, its not QC problem.

 

If you check out how spark plugs are manufactured on youtube, you will notice that the grounding tip is bent by the machine to a specific gap and this gap is fixed for the entire manufacturing line for that particular model of the plugs.

 

Its simply not feasible for manufacturers to manufacture plugs with different gapping. They will have to keep stopping the entire line and adjust the bending machine.

 

Thus they just fixed on a certain gap and rely on consumers to adjust the gap to suit their cars instead.