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Thread: 2012 Focus: special spark plugs? Reply to Thread
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Topic Review (Newest First)
06-28-2014 03:14 AM
RonMaiden
Quote:
Originally Posted by pablo94sc View Post
I didn't get them for HP but for the warranty and EMI suppression. Plus, when you turn up the wick on a forced-induction car, better wires/less resistance means less likelihood of a weak or blown-out spark. I'm not fond of blowing a hole in my pistons. :)
I was running 22psi with good 'ol NGK plugs and wires and never had any misfire isssues; the Magnecores had issues on fellow DSMers cars and they seem to have fallen by the wayside since you don't seem em much anymore.
06-27-2014 07:15 PM
pablo94sc
Quote:
Originally Posted by Napalm View Post
most likely either a Gap difference or a heat range difference. and I suspect you could use either,
I'm thinking it has to do with whether the car is capable of running E85, so could be heat range (Ford used to designate heat range with the second #), or maybe something to do with the washer or ceramic jacket? I think gap is .036 for both.

Really doesn't matter I guess... but I'm sure we'll find out one day.
06-27-2014 04:41 PM
Napalm
Quote:
Originally Posted by coyotemoon View Post
I use the Fram TG3614 filter from Wal Mart
plese stop. fram filters are generally the worst oil filter you can use - paper is too porous and too light.

Wix makes an awesome filter and is just a few dollars more. well worth the insurance
.
Quote:
Originally Posted by Elizabeth View Post
Anyone index thier new plugs?
I did it on my SVTConyour years ago. Lots of work and putzing to get it done. Bought ten plugs used six.. (instead of washers. (washers would be tough to find for the slanted seat.)

Then which position would you want the electrode in, anyway, in the MK3 focus?
I posted this as a new question in the engine threads..
http://www.focusfanatics.com/forum/showthread.php?t=431241
I wouldn't say that indexing is necessary in an engine like these with direct injection. what with the direct mixing of the AF ratio and the engine is designed to have a high swirl in the chamber - the spark plug in the center doesn't really matter what direction the opening of the electrode is in.

you could use something alkin to an E3 spark pllug if you were that worried about it

Quote:
Originally Posted by pablo94sc View Post
Not sure if this was posted, but Motorcraft part numbers look to be the following -

MOTORCRAFT Part # SP535 Platinum Iridium
Plug Material: Iridium; From 6/01/11; Gap: .035

MOTORCRAFT Part # SP522 Platinum Iridium
Plug Material: Iridium; Before 6/01/11

No idea what the difference is.
most likely either a Gap difference or a heat range difference. and I suspect you could use either,
06-21-2014 07:54 AM
BrApple
Quote:
Originally Posted by cobrajet429 View Post
Exactly. Any misfires would be detected and throw a code . It either burns or doesn't.
I have to partially disagree with this statement. On my Contour I had a miss due to carbon tracking. I could feel it while driving but I never got a blinking CEL to indicate a misfire.

Now on the Focus with cop I am not sure this would hold true.
06-20-2014 12:42 PM
pablo94sc Not sure if this was posted, but Motorcraft part numbers look to be the following -

MOTORCRAFT Part # SP535 Platinum Iridium
Plug Material: Iridium; From 6/01/11; Gap: .035

MOTORCRAFT Part # SP522 Platinum Iridium
Plug Material: Iridium; Before 6/01/11

No idea what the difference is.
06-20-2014 12:22 PM
pablo94sc I didn't get them for HP but for the warranty and EMI suppression. Plus, when you turn up the wick on a forced-induction car, better wires/less resistance means less likelihood of a weak or blown-out spark. I'm not fond of blowing a hole in my pistons. :)
06-20-2014 11:39 AM
RonMaiden They were mostly hype and didn't make hp like some claimed. My Toyota has it's original 1998 factory plug wires with 184k on 'em but they will be changed soon just because.
06-20-2014 11:32 AM
pablo94sc
Quote:
Originally Posted by RonMaiden View Post
I remember the hype of the Magnecore wires with a ground on each wire and people swore they made HP and they slowly faded from the market.
I love my Magnecor 10mm wires on my Tbird. Over 120k miles and 30+ plug changes on them and they still work and look great. The warranty is fantastic too. So much better than the Motorcraft wires that wore out around 50k.
06-19-2014 07:36 PM
RonMaiden I remember the hype of the Magnecore wires with a ground on each wire and people swore they made HP and they slowly faded from the market.
06-19-2014 06:17 PM
cobrajet429
Quote:
Originally Posted by RonMaiden View Post
Define "huge" difference. If your car is running well you shouldn't notice any difference between new copper, iridium or platinum plugs since plugs can't improve hp or a 1/4 mile time unless your old plugs were crap.

I ran iridiums and copper in my 400hp Eclipse and was no diff except changing intervals.
Exactly. Any misfires would be detected and throw a code . It either burns or doesn't.
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