Have been running the B+4's in my truck for about 6 weeks now, and don't have any pinging even with the S/C. Am worried about what I'm seeing on this thread (and others) and will most likely go back to the NGK's. Not worried about time between changes, more worried about the longevity of the engine itself.

 

I ran the original Bosch Platinum spark plugs in my old datsun. That car ran rough as hell, and after installing them, it ran so quiet and smooth that I would try to crank the engine after it was already started! When I upgraded the ignition (Crane HI-6 capacitive discharge ignition module/Accel Super Stock Coil/Accel cap and rotor, and Accel Super Stock Spiral Core wires) I went back to "normal" copper plugs. It was my understanding that the platinum plugs are best for weaker stock ignitions. Anyhow, I have been running the Bosch Platinum +4 plugs for over 3 years now and have had no real problems to speak of except the overheating~but I am not sure whether that can be attributed to a set of spark plugs. I plan to use mine until they are no longer usable and then I want to try to the NGK Iridium plugs.

 

WOW,... I installed the regular Bosch Super duty copper tip plugs and all I have to say is WOW,... I started my truck up after it had sat outside in the cold and it started right up! There was no hesitation what so ever,... It sounded like it only crank but once or twice. With the +4's it was like 4 - 5 cranks? About. Driving with the engine warm,... the truck has so much more PEP then it did with the +4's,... what a difference. I'm not using the +4's anymore. They didnt work well with my last car and they aren't working well with this one either,... oh well.

 

Thanks for all the opinions guys, Well The 4+'s are doing fine for me so far, better gas mileage as of yet (18 mi/gall). If I run into any problems i'll let ya know. Im gonna run them thru and see what happens. Feels like more pep sometimes then others not. WHo knows, I know so far they are running better than the Denco's But what do you expect from old plugs.







Take Care All! lates

-David

 

I installed a set on my 91 3VZE and ran them for around 22,000 miles. When I installed my new engine I went back to a NGK plug. The plat 4 were very dirty and I dont think they were a very good investment. I would not purchase another set unless I had something to give them more power for spark like a Jacobs system.

 

what about iridium plugs made by ngk for '93 v6 motors?

 

I used the bosch platinum +4's and then at 100k I went back to the stock dual electrode ones from the stealer. I figured, I saw no noticeable difference between the two so I'd just use the same ol same ol that toyota used in the first place. bottom line, I didn't notice squat performance-wise.

 

I think as long as they are not +2, or +4, they should be OK. I had Bosch platinum single electrode, and they were fine. My ignition had trouble with the gap on the +4's, but others haven't.

 

my 93 had bosch platinums when i got it: they were totally shot. carbonized to hell and looking pretty piss-poor.

i don't know how long they were in there, exactly, but i switched backed to the original NGKs.

for a couple bucks a plug and a few turns of the wrench (plus a few bashed knuckles) the ol' girl really responds better now.

sure wish that #5 plug didn't require a contortionist or professional to access, however.

between the location of that plug; the pcv valve; and the location of the oil filter; i wonder what toyota was thinking when they built this engine??

gotta give 'em props for durability, however.

 

It's simple. Japanese engineers, they have tiny hands and arms.

 

yah, I saw a sony commercial a while back (downloaded it from somewhere) there was a bunch of asian guys and sony was all like "caucasians are too tall and clumsy"

any word on the iridium plugs??? nobody has tried them??

 

A while back I thought somebody had posted that they had just gotten some and were going to post some test results or something. I thought it was 3 or 4 months ago though, I'd a thought they would have posted them by now. but, it could be that bong I've been smoking and nobody has tried it yet.

 

Bythabay:

i think that sony "commercial" was actually a clip from a late-80s movie called "crazy people"

in the film, an advertising exec (dudley moore, i believe) goes nuts and gets sent to the funny farm. he then enlists the help of his fellow mental patients and shakes up the advertising world with something truly original: blatant, in-your-face honesty in advertising. the sony one was great: in essence, japanese people have small hands so they make better electronics.

the porsche one was better:

"porsche: it's too small to get laid IN it. but you're guaranteed to get laid the second you get OUT of it."

:^)

 

Any news on iridium plugs? anyone tired them yet?

 

I have had them for many moons now. No issues. They work well, but certainly no better than the stock NGK dual electrodes. They are intended also to be a high mileage plug, so if you want a long lasting plug, give them a try. They're $11.99 each.

My .02
G

 

i have them in my 94 celica GT. i've never had a problem with skipping, or trouble starting, or anything like that. but i saw ZERO performance benefits from that. if you're gonna stick with bosch platinum brands, just stick with the single electrode and gap it properly. it's a heck of a lot cheaper and does the same thing.

 

My '04 V8 came with iridium plugs, and the owner's manual and a sticker under the hood states NKG Iridium plugs only.

 

The Bosch plugs seem to work well on German cars, specifically BMWs and some VWs. A lot of tuners used them. On Japanese cars, NGKs seemed to be a better choice. Dont know about domestics. This is just my 2c, from my experience and what I've heard from mechanics and other folks. Everybody tends to have a different experience, but as a general rule I would not use the Bosch plugs in a Toyota. SOmetimes it is better to go with the crowd, makes life simpler.

 

Same here.

 

I've been running the NGK iridium plug for since September of 03. So far the engine runs a little smoother and the acceleration is a tad better. I have them in my acura too. The 4 runner shows no signs of increase fuel usage. The acura milage increase a little. Different engines react differently with these plugs. I can say that because they're NGKs, your runner will run just as good if not better then new. A word of caution. On the acura, some guys on the acura forum have notice that when ran hard, these plugs seem to need to be change sooner then they were led to believe. Could be driving habits, who knows, but for the price you may only get slightly better performance, may not be enough to justify the cost. For what it's worth, the regular NGKs are just as good for at least the 3.slow engine.