R34 Gtt Spark Plugs

[Lithius]

Hey all, sorry to have to ask but in all my searching I couldn't find a definite answer for the R34 GTT and i'm not sure if they use the same as the other RB25 engines. Does anyone know If I can buy pre-gapped plugs that are .8mm to suit the NEO RB25DET? If so what is the part # for these, I went into a few places today and they couldn't help me. Otherwise i'm going to have to re-gap the Iridiums I have in it because they are seriously mis-firing above .6 bar.

I'll also be looking at the coils and possibly treating them with araldite when I have the plugs out. Which reminds me, does anyone know of a guide for removing R34 GTT plugs? Found one for the RB25DE engine but I think it may be a different setup.

Thanks.

[nuffsaid]

Kudos Motorsports on these forums can help you out.

6 x BKR6EIX for $99 delivered.

Dont get the BKR6EIX-11, they are 1.1mm gapped ones.

Be careful when you start getting parts off to get to the plugs, dont break the boost sensor that is near the firewall in the middle of the engine bay.

[satanic]

Never fear; if you break the sensor - I have a spare

Nah you'll be right; provided the car is stock (air box I mean)

1) Get rid of the air box assembly

2) Remove NEO6 Engine Cover

3) Remove Hoses + Clamps

4) Loosen up and remove the BOV Pipe

5) (optional) Remove throttle body

6) Remove Coil Cover

7) Remove Coil Packs

8) Remove Spark Plugs

You do not need to remove the strut brace; there is more than enough room under it to work with.

The throttle body does not neccessarily need to be removed; you can work around it (might spend some time doing so though).

NB: There is one allen bolt under the throttle body that will be very hard to get out if you don't take the throttle body off (it's under the TCS motor). I got around it with a pair of grips onto the allen key piece instead of using a ratchet.

IMPORTANT: use a magnetic tray or something for your bolts and make sure you double check if anything falls into the spark plug wells. I know of one person who blew his motor because he didn't check it (poor guy)

Good luck!

[Zappn]

How does everyone else get their coil covers off?

I had real trouble getting mine off because of the breather hose connections.

[Abo Bob]

Unbolt the connecting pipe at the back of the valley cover. Take all the hoses off.

[satanic]

Or just cut it in half (or snap it in half) Out easy

[noise]

GTT dont like iridiums, plus gapping iridiums can damage them.

USE COPPERS!

take it back to the moron who put the wrong plugs in and get him to do it free of charge?

Edited August 17, 2006 by noise

[blind_elk]

If you have a problem at .6bar, then it's not a spark gap problem. Gapping the plug only masks the real problem.

Read this:

http://www.skylinesaustralia.com/forums/in...howtopic=130557

before you decide on a plan of action.

[Lithius]

I don't have the problem at .6 bar... I think its about .7+ where I'm starting to misfire

[R31Nismoid]

I don't have the problem at .6 bar... I think its about .7+ where I'm starting to misfire

.6 .7, near enough dude. you have other issues IMO

[sloutch]

The iridium plugs i have are already gapped at 0.8mm. So it that bad or what?

noise: Why isn't iridium plugs good for the R34s?

[Lithius]

Yeah I kinda figure there's an underlying issue (coilpacks?) but the way I see it gapping the plugs to .8 is just a temporary fix until I get around to getting some splitfires. Maybe I should just leave them alone and buy the splitfires straight up. Or have a look at the coilpacks and see if I can araldite them.

Edited August 17, 2006 by Lithius

[Lithius]

I've got all my coils out at the moment, they all look to be in good condition. Does anyone know what copper NGK plugs I need for an RB25DET NEO? The repco/autopro guys don't seem to have any idea because it isn't in there book. I have Iridiums in it at the moment (BKR6EIX) but I want to get some cheap coppers to regap to 0.8mm. Are they the same plugs as for the R33 RB25?

[Busky2k]

I've used BCPR6ES in my mates NEO with no problems... Just gap them properly with a feeler gauge.

[Lithius]

Ah okay cheers, the guys there were adamant that NGK didn't make copper spark plugs. Eventually got them to give me the right ones! Thanks.

[RB30-POWER]

The standard plugs from factory are NGK PFR5G-11 for GTT R34.

Platinum plugs with a heat rating of "5" under the NGK scale and a gap of 1.0-1.1mm.

These engines run a hotter plug then the non NEO RB25 as its a more efficient engine and meets tougher emission level standards.

If you aren't making over 250rwkw, then you shouldn't even need to consider reducing the gaps. If the coils have failed repair or replace or else your never going to have the vehicle running correctly, and doing bodge jobs such as plug gaps is no the answer, longterm.

[Lithius]

Just incase someone finds this thread whilst trying to diagnose the same problem, gapping the plugs didn't fix the problem but getting splitfires did. Car runs like a monster now

Edited September 11, 2006 by Lithius

[Haxorz]

Just incase someone finds this thread whilst trying to diagnose the same problem, gapping the plugs didn't fix the problem but getting splitfires did. Car runs like a monster now

Thanks for the update! I have a similar problem. Did you try epoxying the coils before replacing them as per this thread?

[Lithius]

Thanks for the update! I have a similar problem. Did you try epoxying the coils before replacing them as per this thread?

Narh mate, I did try taping them all with good quality insulative tape but It didn't make a difference. I couldn't see any discernable cracks or anything that a lot of people described... It'd be a good money saver if it works, but in the end i'd say splitfires are the best bet.

I really need to get a multimeter and test out my coilpacks, 5 of them are probably okay.

Here's a few threads I looked at for info on the problem. There were a few more things I could've done to try and fix it myself but I guess I got lazy.

http://www.skylineowners.com/forum/showthread.php?t=43555

http://www.skylineowners.com/forum/showthr...ghlight=misfire

http://www.skylineowners.com/forum/showthr...ghlight=misfire

[G_Force]

Hey,

i too am looking for the right plug for a 34GT-T and after doing a search n some reading incl. the thread by R33S2 with over 153 replies that took me half an afternoon to get thru, im probably more confuse now than before i started looking.

Planning on running da 34GT-T on 12psi, maybe even a tad more since i usually only give it short squirts. Planning on sticking to NGK coppers, in the V-power if i can get em, from wot ive read, i believe i should be using 0.8mm for that sorta boost, not sure which heat range. Anyone know wot the model no. for the plug i need and where i can get a set from? I need a set pretty soon.