Anyone Using Bosch Platinum Sparkies In 2010?

[KrazyKong]

My GTR has been on Bosch for 18months without problems.

What type of Bosch plug? Platinum Plus, Fusions ??

[N I B]

Platinum, Very cheap and have been very good. 18psi without any issues at all.

[BASHO]

Interesting that those who are using Bosch are having a good result , NGK would maybe managed to frighten a whole shitload of people into buying a vastly overpriced product.

I have wondered since buying my first WRX 6 years ago why the fark the plugs were so expensive ($25 a hit) and again with the R34GTT @ $21ea this would seen to be yet another piece of successfull terror marketing that the car industry seems to specialise in.

Thank fark for forums like SAU !

Edited May 8, 2010 by BASHO

[Galois]

just out of interest, how do you compare the gtt to the wrx?

[BASHO]

just out of interest, how do you compare the gtt to the wrx?

Wow so different it's hard to say, the WRX is a point and shoot car, great fun, quick and with very few mods even quicker , the stickability of the car is almost sinfull , I've had two, both MY00's and if I could afford to run two cars I'd have another.

Subaru Gold Coast are good to deal with Subaru Coffs Harbour not so much, so I guess dealerships are luck of the draw.

The GT-T is just so fine to drive, you have to think what you're doing when you're driving it and it corners like a champion , I realy think it is much more of a drivers car than the WRX , it's fun to turn the traction control off and push it a little , I have no real desire to up the power on the car it's got enough for an every day driver , well for me anyway, though I was reading the sticky this morning about the boost wire mod that interests me--------

Gold Coast Nissan have turned out to be champions to deal with--after a rocky start--my fault probably, I'm such a grumpy old bastard.

All in all I like the R34 GTT best of the pair--its a real car.

[Galois]

thanks mate, yeah the gtt is pretty fun but i guess the biggest difference is in the rain lol. i have a mate with a club evo 6 wrx and he says its amazing how little he has to change his driving between wet and dry. what boost are you running atm?

[BASHO]

thanks mate, yeah the gtt is pretty fun but i guess the biggest difference is in the rain lol. i have a mate with a club evo 6 wrx and he says its amazing how little he has to change his driving between wet and dry. what boost are you running atm?

Running stock everything except springs (kings ) which came with the car (I put on all new OE shocks), exhaust, 3" dump, 3"High flow cat, 3.5" Jap mid section & mid muffler and 3.5" oval Varex rear muffler.The wheels I changed from stock to 17x8 Enkei RPO3s with Nexen rubber.

After all that phew-whatever stock boost is, I think it's around a half bar at around 4000rpm.

If a WRX does let go --it gets beyond interesting-- ah hem

[KrazyKong]

I finally got around to putting in the Bosch plugs today. I also replaced the rocker cover gaskets and gave the throttle body a nice clean too.

Checking the gap of the new plugs which were listed as 1.1, they were all just over 1.0, so spot on. From all the reading I've done so far, with the stock boost I'm running, there is no need to gap them at 0.8.

I also installed a new 3" split dump + front pipe over the weekend. Taking it for a drive today, the car feels fantastic. More response, more power and so much smoother.

I don't know how long my old plugs have been in the car, but when I pulled them out and saw they were Autolites, I had a WTF moment. I'd never heard of that brand and so had to Google them. Turns out they were double platinum (APP 3924-11) plugs so at one point they may have been a good plug.

So the initial verdict is the car seems to be happy with these Bosch Platinum plugs. Time will tell how long they last, but for the price it was well worth a try.

Edited May 10, 2010 by KrazyKong

[ARTZ]

Not sure if you guys are reffering to me, but if so the name is Phil, not Paul lol.

.

Phil it is......

think i mitsook u for paulr33 or just ahd a dyslexic monemt...

I learnt the hard way trying to gap platinums when i upped boost..ended up wrecking half my plugs , so i just got some coppers to fix it...they work fine...prolly not as smooth though

[STATUS]

there is NO POWER difference between the plugs, only lifetime. ^^^^^^^^^

[KrazyKong]

there is NO POWER difference between the plugs, only lifetime. ^^^^^^^^^

And as the lifetime of a plug increases, so does the wear. Thus an old plus isn't going to perform as good as a new plug.

The power increase I am feeling is obviously a combination of a better flowing exhaust, new O2 sensor, cleaning the throttle body, and new spark plugs.

In terms of power difference with spark plugs alone, there's many folk on here who have stated they got a boost from going from one plug to the next. A good Iridium plug doesn't just give you a longer life than a cheap $1 copper plug. It gives you a better hotter spark as well.

All I can state is my own personal experience, and after doing all of the above work, the car feels easily 20-30% better in terms of acceleration, response and zippyness.

[Galois]

ive often wondered about this: copper is used for its conductive properties in electrical work, in fact isn't it one of the best conductors? but my understanding is that it wears more easily than platinum or iridium, so these are often used in vehicles.

but if platinum or iridium are poorer conductors, does it take the coil packs slightly longer for the coilpack to generate the spark? and if it takes longer, is the spark duration shorter, making the spark less effective at ignition?

the following site has a list of elements by their electrical resistance, copper is second only to gold. which, given the same resistance from air (same gap) would mean copper would spark sooner and longer?

http://environmentalchemistry.com/yogi/per...electrical.html

ok, another question/point, does the fatter tip of the copper generate a spark with different properties? ie: could it produce a better spark?

people often want to focus on gapping and plug type because bigger boost blows the spark out, so reducing gap reduce resistance which creates a stronger spark (duration and power crossing the gap). it doesn't matter to us running fairly stock boost. so to run more boost, you want to run a stronger spark, whether you change plug type or gap. but given the power is generated by igniting the petrol for full explosion at top dead center, as long as the cam advancement is right they should all perform the same right? (assuming brand new plugs)

[STATUS]

And as the lifetime of a plug increases, so does the wear. Thus an old plus isn't going to perform as good as a new plug.

The power increase I am feeling is obviously a combination of a better flowing exhaust, new O2 sensor, cleaning the throttle body, and new spark plugs.

In terms of power difference with spark plugs alone, there's many folk on here who have stated they got a boost from going from one plug to the next. A good Iridium plug doesn't just give you a longer life than a cheap $1 copper plug. It gives you a better hotter spark as well.

All I can state is my own personal experience, and after doing all of the above work, the car feels easily 20-30% better in terms of acceleration, response and zippyness.

Back to back testing on my dyno revealed coppers always make more power.

[ARTZ]

Last time i did a service i changed from standard mobil 1 and platinums to motul and coppers. Just to see if there was any kind of noticable difference.. well it definately felt different, i could even say stronger..But i have no proof other than feel...I was quite suprised that it made any difference

[Galois]

Back to back testing on my dyno revealed coppers always make more power.

interesting, do you think a tune could have helped to make sure maximum explosive force was achieved at top dead center?

just a thought

[GTS4onP]

Got Bosch platnium plugs in my car, Pack number P1-6, think they were FR7DPX, far far better than the HKS and Denso Iridium plugs i had in my car previously

Can't fault them, run 10psi with bigger turbo etc very well

[KrazyKong]

Wow that's interesting Trent.

Blair, that's the same plugs I put in my car. Left them at the pre gap of 1.1 and so far they have been dynomite. Was driving home this evening and put my foot down at a green light. The car's never had that kind of zoom when getting off the line. Obviously all the things like new split dump and front pipe, plus 02 sensor come into play, but I know the sparkies are helping too.

I'm on stock psi, but after putting in my FMIC, I'll go either with a simple t piece, install an r32 acuator, or ground my existing r33 one.

I'm happy with my Bosch plugs right now. Time will tell how they hold up, but for the price I paid, I'm not only not complaining, I'm recommending them to folks running stock to 10psi boost.

[Galois]

congrats on the improvement mate. im running stock too so ill be grabbing some of them soon

[wilo13]

im not a mechanic, gonna say this right now lol, so i can say some dumb things.

i can and have serviced vehicles before (but never a turbo), but the turbo pipe????(i think haha) running over the engine block baffles me and i did not want to take it off and put it back myself just in case i buggered up. So i took it down to the mechanic for a check up and book in for a service. They want to charge me 440 for a major service using platinum plugs, or 240 using standard plugs, im guessing coppers, but after reading this im not sure if its worth the extra money?

I have an R33 GTST at 84K with stock boost.

The reason for the major service now is that i dont have any paperwork for the car ie. service history.

[Galois]

its surprisingly easy to service yourself mate, 440 is a joke!! you can do it for less than $150.

clean your air filter, or replace it if keen (prob find a diy for that). the spark plug and oil+filter change diy's are below...

i use ngk bkr6es-11 spark plugs, they're copper and about $4.50 each. they're copper so they need changing every 5000km, with oil.

for oil, use a proper full synthetic, either gulf western sougi s 6000, motul 8100 xcess, motul chrono 300v, or royal purple, and for weight 5w40 or 10w40. on filters, plenty of people seem to use ryco, or drift (high quality), or the nissan filter bought from the dealer. might be worth getting a sump plug washer while you're there.

the vast majority of people on sau use one of these oils.

do a search for changing diff and gearbox oils, there's a good sticky in the drivetrain and transmission section. there are also service guides floating around, which can tell you what it's time to service

diy's below

oil:

http://www.skylinesaustralia.com/forums/R3...ug-t122284.html

http://www.skylinesaustralia.com/forums/Ch...p;hl=spark+plug

spark plugs:

http://www.skylinesaustralia.com/forums/Sk...ngi-t10035.html

http://www.skylinesaustralia.com/forums/Di...tml&hl=coil