Either stock or the MotorCraft AZFS22C f4 SP 463 copper plugs.

 

So the Motorcraft AZFS22C's would be good for my application even though the car isn't an SVT or forced induction?

Also, I see you have a Mustang. Although it has the non-PI heads, I'm sure you're familiar with the spark plug blowout issue of the 99-02s. In 03, they solved it. Anyway, Mustang guys say to torque the plugs to 13 lbs without anti-sieze and 15 with anti-sieze. I've read here on the boards that 11 lbs. is standard for the Focus, but should I bump it up a couple pounds if I use anti-sieze.

 

MotorCraft AZFS22C f4 SP 463 copper plugs is what I use as well. Great performance, cheap price. Sure I'll have to change them in 20K...but they're on top of my engine. Big whoop!

 

That's what I love about overhead cam engines. The last time I changed the plugs on an overhead valve engine, it was on my '98 5.0 Explorer. I had to remove the wheels and inner fenders and use an assortment of small exentensions and universals in order to get to the back plug on each side.

When I cross reference the Motorcraft part number on Autolite's website, I'm getting APP5364 and APP5344. Any ideas?

 

Dont get them from Autolite......

 

Really? This is somewhat of a shock as I've never heard anything bad about Autolite. Bosch is another story, but usually Ford guys say that Autolites are the only things they would use other than Motorcrafts. I've even heard in some instances that the Motorcraft plugs are manufactured in the Autolite facility. I'm not sure if this holds true for all part numbers.

Would you care to elaborate?

 

.............. never heard anything bad about Autolite. Bosch is another story.............

Would you care to elaborate? What is wrong with Bosch?

Are they actually a poor quality or poor performing plug, or just overpriced?

 

Trust me.. you want MotorCraft in this case... Autolite crosses over to a platinum plug.

 

OK, school me. I called around to all the parts stores this evening trying to find the copper plugs and no one had them. [hatchet] I ended up getting the Autolites cause I am going on a short trip tomorrow (about 1.5 hours each way) and wanted to see if I can get this miss out of my engine at low revs. Am I going to regret getting these? Why? I've never been a big fan of Autolites, but they are better than a lot of others.... I also have numerous mods, so are these not going to run well in the car?

 

Right on! I'm glad you pointed that out or I would have probably picked up the Autolites this evening. Does the board have a preferred vendor for Motorcraft?

 

I dont have one, i get mine from a local dealership.... They should be about $2.80 each

 

http://www.focusfanatics.com/forum/showthread.php?t=184425

Please note my mention of plug length at the bottom, double check which you are buying, factory spec is 25mm reach.


Currently I am testing a set of NGK coppers, I don't have enough miles on them to make any claims though.

 

I used NGK copper almost exclusively on my old Datsun 240Z...they were great for about 17K and then they began to get all soupy.

 

IMINHELL, your thread was a good read. Thanks for the post.

PS - I just placed my order with RockAuto for the Motorcrafts. With a discount code, I got the plugs for less than $11 shipped. The closest Ford dealer is about 45 minutes away, so I'm happy.

 

i run autolight xp iridiums in my car, they run reallly good actually. any oriellys should have em, considering that i work there we always have that plug in stock.

 

From what I understand, copper is just a better conductor. However, copper plugs do need replaced more often than platinum plugs.

 

^Yes to all, far as the Focus is concerned.

There have been numerous accounts of the porcelain and electrode breaking off. I haven't paid attention to if all Bosch plugs do it but I know the platinum and double platinums will.
Only thing I've been able to attribute it to is heat range is way wrong.


And I can attest to them doing engine damage:

The rough areas are where the electrode bounced around in the cylinder. Far as I can tell it just made things look bad. But like hell if I'm gonna take that chance again or recomend anyone else do the same.

 

I can only recall ever reading bad things about Bosch plugs. I first became aware of this after purchasing them for my Explorer and then reading the many horror stories associated with them on a very highly regarded Explorer forum. Fortunately, the short time I owned the Explorer after I installed the plugs, I didn't have any of the problems, but I would never consider purchasing them again after reading about fouling issues, poor performance issues, and porcelain cracking issues. I feel it was only a matter of time.

 

Whoa, quite convincing! Good enough for me to just stick with the Motocraft Coppers and be happy. Thanks for the info.
I think I read here that the SP463s are proper for my '01 2.0L ZX3, but Summit does not seem to match them to my car.

 

Wow, those SP463s are just $1.50 at Summit, order a few more items like Taylor Thundervolt wires, etc. to spread the shipping and handling cost out and you have a good deal.

 

so im guessing since i couldnt get my hands on the Motorcraft azfs22c' right now i grabbed some autolite app5364 since they did not have the xp5364 for the time being from reading iminhell' thread on how to choose the right spark plug are these going to reach too far into the cylinder ?

 

No. The APP and XP both have the correct 25mm reach.

 

oh ok id still rather have motorcraft over autolite even if autolite makes them
but the xp5364 have done well for me when i dont order azfs22c
i returned the app5364 didnt seem to appealing 5 year spark plugs yuck!! lol