Bosch Platinum +4?

[steevil]

do these plugs wokrk well? I've heard conflicting stories and I was curious if any of you ran the Plus four plugs.

It's the platinum plug with the four electrodes..very spendy stuff..

 

[projectSHO89]

Not for an SHO.

Stick with the Motorcraft stock plugs unless you have special circumstances, ie, nitrous or blower.

Steve
89

 

[93MTXSHO]

Hey, I just wanted to let you know that the +4s, +2s, and Splitfires are just gimmicks. My buddy is going to mechanics school and one of his teachers told him that they really don't make any difference. An electric current is going to take the shortest route because it's lazy. And it's certainly not going to split into 2 or even 4 arcs. Stick with the Motorcraft plugs. They're simply the best you can get for your money.

 

[Steve07]

Those things are like snake oil. Shortest path, which means 4 is no better than one. Buy the motorcraft ones.
Steve

 

[munkee]

The problem with the +4 (besides the fact that they are absolute crap)is that there is no way to check the gap. If you happen to bend an electrode you might as well throw that 8 dollar spark plug away. The splitfires aren't too bad. The point with those isn't that the spark splits into two paths at the same time, but that the flame can travel straight towards the piston through the v shape (whether that makes any difference, I don't know) plus it extends the life of the plug. When a plug fires, a miniscule amount of the platinum tip is "burned" off and deposited. Since the spark chooses the path of least resistance, or the shortest path in this case, the spark will alternate which side it fires to as the points wear down, giving the plug more time in an optimal gap range. However, for two dollars more than the motorcraft plug, I don't see that any of that is substantial enough to constitute switching from motorcraft. I am using split fires right now (because the dealership here wanted 8 bucks apiece for the motorcraft) and I haven't had any problems with them. The wires seal correctly also. I learned after I purchased the splitfires that you can get motorcraft plugs at ford parts network I think for about 4 dollars.

 

[sdpatt]

Or local auto part stores (O'Reilly and others) for as little as $3.79.

 

[SHO_Driver]

What about regular Bosch platinum plugs? Anyone know any reason not to use 'em, I'm running them right now and the engine seems as smooth as the stock plugs, cheapeer too.

 

[LaTechSHO]

i've been in the auto industry for a little while.... and there is a general rule of thumb for spark plugs on anything.

put the plug that the engineer had in mind back in the engine.

with few exceptions(disclaimer so i don't get slammed) the best plug to run in ANY engine, is the factory plug. That being said... most engines from europe would run best on a bosch plug, just the same as a nissan motor will run best on NGK...toyota on Denso.... you get the idea.... THUS use the motorcraft plug.

FYI..i have noticed that in most cases...bosch plugs run very well for a short period of time...just an observation from selling them

Louis

 

[Wigglespank]

Ive been running the Platnium 4,s now for about 3yrs. In that time ive driven about 38,000 miles on them. Im now at 101,768 with no problems to report from using them. I did notice an improvement over the Motorcraft Plugs when I first installed but that could easily be accredited to the fact taht the Motorcraft plugs had over 60,000 on them. The car seemed to have a tad more pep and I did gain an extra mile to the gallon. However Im sad to report that the gains didnt seem to last much longer then a few months. When im ready to replace the plugs again I wont be spending the money on the Boschs.

94 ATX
101,768