Quick question for the 3 valve guys. I dont really mess with the 3 valve engines. I have a friend that wants me too change his plugs for him.

1. Are there any acceptable or better than stock spark plugs? Or just stay with the motocrafts?

2. I notice there is a problem with them seperating and part staying in the head. Has anyone come up with any good ways to deter this? If one does break, is removing the head the only recourse to get it out? Thanks!

 

Use the Advanced Search, there is a lot of info out there. You must follow the TSB explicitly and there is a tool made by Lisle, if one breaks. Removing the head should not be necessary. I went back with Motorcraft, just coat the shank with nickel antisieze per the TSB.

 

I do believe Champion has a one piece plug but unknown if it performs the same or better. The only GOOD thing is it is one piece.

 

I'd advise you to decline the job and refer him to a Ford dealer.

 

OP - if ya do decide to do this, one thread of many ==> https://www.f150online.com/forums/20...ug-update.html

BTW - how many miles on that 3V?

Good luck

 

As suggested, keep searching. There is at least one thread where someone tried Champions and ended up switching back to Motorcrafts.

 

Brisk makes a one piece. Dont forget the anti-sieze.

 

The Brisk is a racing plug. It's not platinum and it's a cold heat range. Expect them to foul out unless you warm it up fully every time you drive it, and you drive it like you stole it. They will also need to be changed at least every 25k.

 

keep using the motorcrafts! from what i read that is what everyone recommends.

 

Not everyone. Just the cautious ones.





Search for Jim Allen's posts.

I'm going Champion. I expect no issues. But then again, I'm probably the only feller here that pulled his plugs when the truck had less than 1,000 miles on it to apply hi-temp nickel antiseize to the DRY factory-installed shanks. And a miniscule amount on the threads.


MGD

 

Motorcraft has released a new P/N plug, that is supposedly less likely to break.
The original P/N was SP-507, new P/N is SP-515. Here are some photos of both
plugs, I don't see much difference, except there is more bluing on the weld on
the new plug:


1


2


3


4


5

 

Both plugs are the same, Both are the revised type, neither one is the original plug. The difference is the 507 is a single platinum plug and the 515 is a double plat. plug. Both are a revised design to help stop the breakage issue.

 

Look at the electrode photos, only the center electrode is platinum on both
plugs.

Here are some double platinum photos, notice the center, and ground electrodes have platinum beads:

 

Look up the specs on the SP-515...They ARE the double platinum Plug. That isn't even a Motorcraft 515 you have pictured anyway....

 

I'm sorry, you are wrong. The SP-507, and SP-515 are both finewire platinum
plugs, which are single platinum. Only the center electrode is platinum. The
plugs pictured are SP-507, and SP-515 plugs. Look at the number on the insulator (PZH 14F) this
number cross-references with SP-515. With COPs, there is no benefit
to double platinum, due to all plugs having the same polarity spark.