No one makes a true one peice plug for these motors. Folks seem to like to call this style one peice because it's more robust then the factory design. It's welded construction, so you make the call. It is less likely to break when it's time to replace the plugs, but if you install the motorcraft replacements properly, they too come out just fine.
My personal take is the motorcraft is a better plug but if these are what you want, by all means go for it. They should offer good performance with no chance of breakage.
well didn't know they were just welded or somehow together but stronger. that's why i come here, the best info.
i generally use nothing but oe parts from a good part house here. but been doing lots of reading here. and it all goes either way. but gonna try these accel out. by time they need changing, unless they are junk, i'll hopefully be putting different heads and such on the motor.
currently, some things will arrive for it this week i hope. small lift. bilstein 5100's on all 4 with height adjustable for front with 2" lift, camburg's uca's to get rid of upper ball joints, tuff country 1.5" add a leaf. tough country 4" black pipe bumpers front and rear, blacked out all the badges today and ordered cool overlays for ovals. will be blacked out no chrome. just trying to find some all black 17" wheels and tires. then throw it all on for now. then down the road some new heads, headers and exhaust. should be nice
The MC SP515's I got from Kragens/OReilly's for $8 each still look like 2pc designs. The thing is, unlike all of plugs I've replaced in my cars for the past 30yrs, these spun in very freely by hand until they seated. They must have reduced the diameter of the threaded shank so it will never be a problem. But it's not clear how they addressed the carbon buildup that welds the 2nd half into the head.
I'm running Sea foam regularly. Also heard that Chevron is very good gas. I never thought there was a difference until I talked with an engineering consultant that did some work for them and said their refineries were head and shoulders above most others he had seen. So I'm doing a pound of prevention to prevent an ton of cure.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o></o>