Bosh Platinums
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weshole;199335 wrote:
I agree with Andy on this one. I don't care what brand they are, I have seen EVERY major brand of spark plug fail in one way or another. (Some NGK's too). I'll lay money that the Platinum on the electrode had absolutely NOTHING to do with the failure of the plug. As to what caused it, that's up for debate but, dont blame "platinum" or "Bosh" for the problem.I really dont think it is a heat issue, these also cross reference to the engine in the books, i have seen what lean conditions do to plugs and the remaining plugs have no sign of metal blowing away and are showing the nice tan or brownish coloring. also i have heard from other people about this problem with platinums in general before, but usually in turbo cars. i will agree that it may not necisarily be the fact that it is a platinum, but personally i beleive that the electrode/porcelain was defective. i have seen the bridges fall off of plugs before but for the whole electrode to fall out clear up to the metal casing isnide to me is odd.
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kinda dissapointing lol i have so much work and money in this car, i dont want to have to remove the head, but ...... what can ya do???
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weshole;199340 wrote:
Im not sure on gains. But I do recall someone having spark plug issues when boosting the shit out of their cars. I thought it was either Kevin or Burgess. It probably has nothing to do with wether they were platinum, but maybe they can chime in here.I had plug blow out, but that was my mistake. Stock plug gap while running 15+psi
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i wasnt saying that it being a platinum plug was the reason it failed, just the fact that platinums fail in general. Also, you guys that bought expensive ass iridium plugs, those suck too, ESPECIALLY in a boosted application, that is as big of a no-no as platinums. Look at what guys making 1500+hp are using, most are standard type plugs for a reason.
Gary -
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i tried the platinum 4's on my fuel miser.. just like any other plug change (when your plugs have been used for ten years) the car ran a little more smoothly. Nothing special. They foul more visibly, having way more shiny surface area between the spark and air/fuel mixture. I'm switching to NGK's on the next plug change, probably pretty soon. They're just better. And cheaper. NGK's you get what you pay for (less than 2 bucks) and more. better than not getting what you paid for in other plugs. or having one blow apart. hope there's no major damage.
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I don't know why you guys think Bosch suck or that platinums are crap. Yes you can get the same power out of a copper vs iridium/platinum plug maybe more idk. All plugs fail and in certain cars copper plugs will fail miserably long before the 100,000 mile service life of a platinum/iridium plug, try within 3,000 miles. I ran Bosch platinums in my 302 for 10k and had 0 problems. They were completely usable when I pulled them, and would have if they fit my new heads. I ask you this do any of the OEM's claiming a 100,000 mile 1st tuneup use copper plugs, if copper was so great why bother with paltinum/iridium in the first place? By all means if you have nothing better to do than change your plugs every year get copper ones. However if you're not building huge power and don't want the hassle of changing them all the time, platinum/iridium is the way to go especially if you have a DIS system.
> Mitch Hedberg wrote:
> I'm sick of following my dreams, I'm just going to find out where they are going and hook up with them later.ASE certified parts specialist.
2004 Impala LS 3.8 -
id rather spend the 20 minutes every 8000 miles or so to change my plugs, especially after this, and i wont go back to these rediculosly overpriced things, a lot of people are right NGK is a very good plug, i have used them in snomobiles, atv's, motorcycles, and lawnmowers, they always work great. I just thought that this is not a racer or a beater, this is my weekend toy, platnums may be the way to go, apparently not for the price. I have never seen standard plugs fail in this way before, i have seen the gaps, or bridges (whatever you want to call them) missing before, usually in snowmobiles from shrapnel lol :icon_scratch:
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have you pulled the plugs out of a new car at 50-70k miles??? I have a number of times, and more often than not, that awesomely sweet ass platinum disk is gone anyway. Thats right, i would love to have that nice little piece go through my heads and try to take out a valve. seriously ive taken platinums out of 50-70k mile motors that you would swear had been in there for decades, they looked horrid. Oh, and when the platinum falls off, guess what, you have an electrode with half the diameter thats wearing faster than shit.
BTW, copper plugs last on average 30-50k miles, so i dont see what the big deal is, for me thats a plug change every 3-5 years.
Gary -
If you have the right plug the platinum will not fall off, Champion in particular uses a laser to "weld" the platinum tips on, thats why AC Delco doesn't make their own platinum/iridium plugs. They buy them from Champion and NGK then put AC part numbers on em. I have changed plug on a few cars that had 100,000 on them, one of which was mercury mystique and a couple of GM 3800's, and the plugs looked no worse than the one I pulled out of my Cougar that had 25,000 on them. In the case of those engines you absolutly cannot use copper plugs, the waste spark ignition system will destroy those plugs very quickly. I can't count how many people have come into my store with a Grand Prix/Bonneville/Buick 3800complaining about a miss, claiming they just changed the plugs. They bought copper ones and guess what, 3,000 - 10,000 miles later the plugs are shot. Who wants to change those plugs all the time? 3800's are a PITA. Even using the motor mount trick they still are not fun at all. I can change my plugs in no time, as I'm sure some of you guys can, but a 3800, or a ford 2.5 V6 take a little more time.
> Mitch Hedberg wrote:
> I'm sick of following my dreams, I'm just going to find out where they are going and hook up with them later.ASE certified parts specialist.
2004 Impala LS 3.8 -
yeah but itrfan isn't the biggest person in the world either.
> Parker;299126 wrote:
> blah blah blah blah blah blah blah blah blah blah blah blah German cars are the best thing since sliced bread. -
Well we will see what happens, I got ahold of a Bosch rep today, he is starting a repair claim on the car, he said they may have it towed to Valley Imports since that is the mercedes dealer in the area, and have it looked at and repaired if nessecary, he said the platinum electrode may have done some serious damage to the block and internals if it hadnt been 'spit' out the exhaust, and i told him that is my fear, cause the engine had just recently started to burn oil. so im keeping my fingers crossed.
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