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i get a pretty good deal on j&e shelf pistons.

Quote:

Originally Posted by MILD THUNDER (Post 4382549)

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

Summit Price $214.23

Amazon has 8 sets in stock. $167.31
http://amzn.com/B002VI2IYA

Quote:

Originally Posted by mike tkach (Post 4383261)

i get a pretty good deal on j&e shelf pistons.

those we won't work,,you need custom,,custom everything or the engine won't run right.:D

Quote:

Originally Posted by sutphen 30 (Post 4383275)

those we won't work,,you need custom,,custom everything or the engine won't run right.:D

Very good..........that's actually pretty funny.

Quote:

Originally Posted by ICDEDPPL (Post 4383255)

Mike @ high Flow likes Flat top pistons .. his explanation was something to the effect of

I can`t swing new pistons so I`ll stick with what I have as along as they are still ok.

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.

[ATTACH=CONFIG]548531[/ATTACH] Here are some that I did that were slightly scuffed.

Wow, nice work! Can I send you my pistons ?? :D
I`ll wait to see what needs to be done to the bores then decide coat pistons or 548ci. Might be nice to start with a fresh bores.

Quote:

Originally Posted by MILD THUNDER (Post 4382533)

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.

While what the car makers use is informative, one factor has to be considered - they absolutely do not use the same costing criteria we do. Another $20 (or even $200) for rings for us isn't an issue. Another $20 per engine for them better show another 20+ hp OR a reduction in warranty that more than offsets the cost.

Otherwise, the engineers are stuck using the cheapest ring that will get the job done.

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.

Quote:

Originally Posted by Bawana (Post 4383376)

I do same thing, swain tech gold coat top and std skirt coating, i used diamonds in house coating, was weak and wore off fwiw