Spark Plug Trouble

[sky-017]

recently a friend of mine recommended i use copper spark plugs - because apparently they are a better conductor . but with the fact that they have to be changed every 5,000 kms. anyway i set my self of to repco to pick these up . got home , set the gap to 0.8 , and installed them . now my friend has the sneaking suspicion that i have the wrong ones , for some unknown reason . preferably because of the model number - and hes worried that they could cause the car to run R & R in heat temperatures and cause misfire .. i havent noticed anything yet , but im worried it could .. eventually on a hot day or something or long driving - which i dont have the time to do ...

the plugs are champions , model no: rc10yx4

has anyone ever had these in there car . i know they are cheapies , but yeah apparently they work better because of the copper , better than the nkg , etc.

any one with any knowledge - please post , much appreciated.

cheers

[Craved]

what heat rating are they?

[sky-017]

i wish i knew - they didnt have anything written on the box .... maybe i should call up repco and ask , although - what heat rating am i looking for?

[Craved]

heat rating of 6 is the norm

[subzeroR33]

heat rating of 6 is the norm

Well normally on the ngk the heat rating is the number for eg. BKR5IX-11

So heat range 5 gap 1.1mm

But it should be 6 or 7

The best plugs is BKR7E V power ngk. already gapped at 0.8mm

So going by your plug ur heat range is only 4 but not sure with the champs/

Edited March 15, 2007 by subzeroR33

[Cubes]

Either the BKR7E or the BCPR6E.

Basically the same plug, one simply squashes the coils spring a little more as its slightly taller.

Champion = crap.

Buy NGK.

[WazR32GTSt]

the heat rating numbers are different for different brands aren't they?

i use BCPR6ES which are from ngk, copper core, gapped to 0.8mm out of the box, and cost about $3 to 4 each

[sky-017]

where did you purchase the $4 copper core ones ? BCPR6ES? .. when i purchased mine the gap was majorly small . left is a adjusted 0.8 . right is how they came .... for those who have many experience with spark plugs , i have another question ! after i installed and gapped to 0.8 , i noticed the car would have a slight bump every 2 -3 mins when warming up on idle .... is this the spark plugs or something else?

[Craved]

Plug could be fouling at idle if it is set too cold -- say a 7 or 8 heat rated plug will do this

[Cubes]

The BCPR6ES are the non-vgroove ones.

Also.. shop around you can get them for under $3 a plug. Motortraders/Coventry's (google it for the outlet in your area) do them for under $3, they also stock the BCPR6E plugs which most dont.

Autobarn stock the BKR7E plugs where as most others dont.

---

Yes.. My 7's (BKR7E) used to foul on the pfc's stock water temp enrichment table. I leaned it off quite a bit which stopped it. Car actually drove a fair bit nicer too, not as boggy feeling when stone cold.

I have no need for the 7's so next set I dropped in the usual BCPR6E plugs.

[sky-017]

pic

[sky-017]

hmmm . when i took the old plugs out the gap was like 1.5 = huge ! - i might call up repco and ask what heat rating they are ... - im quiet annoyed about this , mainly installing them - its a pain in the ass removing everything to get to them

[Cubes]

Just get NGK.. You can't go wrong.

Ring around. Repco are rip offs.

[sky-017]

im looking at over $18 a plug for nkg , i cbf falking out that much on them ...

[Craved]

im looking at over $18 a plug for nkg , i cbf falking out that much on them ...

ummm BCPR6ES are NGK coppers

no one is saying get irridiums.

[Cubes]

I find the NGK Cheap coppers are good for 20,000km's.

I pull them out and they still look fine but the gap at that point starts to grow.

30,000km's and they are pretty stuffed but still appear to drive fine. All rounded off big gap etc.

300rwkw odd and they will get chewed up a little quicker, depending on your driving style.

But still 20k from a set of plugs worth $17 total for the average line is perfectly fine.

Ripping the plugs out isn't hard nor does it take long when you have the tools sorted for the job.

It shouldn't take longer than 1hr to get a set of plugs in and out providing you have the tools for the job and organise yourself.

[Craved]

could always get a front facing plenum to help with it

[SkyKC]

Last week I put NGk iridium ones in to my car since my one is RB25DE its already gapped to 1.1mm after I installed it next day I saw under the bonnet, sticker shows aprk plug gap should be1.05mm.......... damn!!!!!!!! should I change it back 0.05mm? or is it ok to run like this? my car is 1994 R33 GTS4 non turbo............

Cheers

Chinthana

[Pauly33GTS-t]

should be ok that difference is so marginal you will not notice any difference, you start noticing a difference like me when you got a turbo and you hit boost and you missfire and then you need to gap them to get rid of it (1.1mm same as urs to 0.8).

[Adz2332]

I find the NGK Cheap coppers are good for 20,000km's.

I pull them out and they still look fine but the gap at that point starts to grow.

30,000km's and they are pretty stuffed but still appear to drive fine. All rounded off big gap etc.

300rwkw odd and they will get chewed up a little quicker, depending on your driving style.

But still 20k from a set of plugs worth $17 total for the average line is perfectly fine.

Ripping the plugs out isn't hard nor does it take long when you have the tools sorted for the job.

It shouldn't take longer than 1hr to get a set of plugs in and out providing you have the tools for the job and organise yourself.

a full set of spark plugs of $17??? reali? thats wot im talking about!!!

So i have a R33 GTST series to and i need to change the spark plugs, what brand / model should i ask for?? So i can just walk into a store in adelaide and say i want this......

cheers!!!