Piston pic.
#42
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Dan, if you were to use the piston rings JE suggests with those inverted dome 4.500 bore pistons, these would be them.
http://www.summitracing.com/parts/jep-j100f84500-5
http://www.jepistons.com/Products/257942.aspx
http://www.summitracing.com/parts/jep-j100f84500-5
http://www.jepistons.com/Products/257942.aspx
Amazon has 8 sets in stock. $167.31
http://amzn.com/B002VI2IYA
#43
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#45
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Location: wisconsin
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Dan I would use the pistons you have. What I do with my stuff & others ,is coat them. I have a blast cabinet that is only used for pistons. I ceramic coat the tops & teflon the skirts. The light scuffing on the skirt is gone after blasting and coating. I use a specific blast media per cal-coat, and then bake the pistons.
#48
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2010 Ford Supercharged 5.4L
Plasma Moly Carbon Steel Top ring
Mahle part 42112CP
http://catalog.mahle-aftermarket.com...rId=784222&d=t
6.0 LS GM Engine
Plasma Moly Carbon Steel top ring
Mahle #41858CP
http://catalog.mahle-aftermarket.com...rId=615547&d=t
6.4L SRT Hemi engine
Mahle #42156CP
Plasma moly Carbon Steel top ring
http://catalog.mahle-aftermarket.com...Id=1206357&d=t
Isnt "MOLY" a coating on the face of the ring, and "plasma" the process used to apply the coating? I've always assumed a top ring is either Steel, or iron, with a "MOLY" coating applied to the face. Pretty sure OEM's have been using moly faced steel top rings for some time now.
Plasma Moly Carbon Steel Top ring
Mahle part 42112CP
http://catalog.mahle-aftermarket.com...rId=784222&d=t
6.0 LS GM Engine
Plasma Moly Carbon Steel top ring
Mahle #41858CP
http://catalog.mahle-aftermarket.com...rId=615547&d=t
6.4L SRT Hemi engine
Mahle #42156CP
Plasma moly Carbon Steel top ring
http://catalog.mahle-aftermarket.com...Id=1206357&d=t
Isnt "MOLY" a coating on the face of the ring, and "plasma" the process used to apply the coating? I've always assumed a top ring is either Steel, or iron, with a "MOLY" coating applied to the face. Pretty sure OEM's have been using moly faced steel top rings for some time now.
Otherwise, the engineers are stuck using the cheapest ring that will get the job done.
#49
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I don't put together a blower motor without coating the pistons. That stuff is Da bomb . I rebuilt a motor that a spring broke, piston hit the valve, put a big smiley in the piston. I thought oh ****, have to get new pistons, but after blasting the ceramic off, the smiley was only in the coating and slight mark on the piston. After recoating, it looked brand new. I have also noticed that the bottom of the pistons don't show any signs of burnt oil. I also used coated bearings on everything, The bearings are just a insurance thing, but I really think coating pistons helps a lot.
#50
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I don't put together a blower motor without coating the pistons. That stuff is Da bomb . I rebuilt a motor that a spring broke, piston hit the valve, put a big smiley in the piston. I thought oh ****, have to get new pistons, but after blasting the ceramic off, the smiley was only in the coating and slight mark on the piston. After recoating, it looked brand new. I have also noticed that the bottom of the pistons don't show any signs of burnt oil. I also used coated bearings on everything, The bearings are just a insurance thing, but I really think coating pistons helps a lot.