[quote]
Originally posted by Jerry Clayton
[b]With a LOT of boost, the pistons need to have strong ring lands....
The first part is not defined, however land width is normally dictated by the combination. We would use the space allowed to the best benefit, but I've seen a 30# boosted SB 400 Chevy live for four years with a .175 top land.
Would I do it in my motor...no, but
Truss rings around the bottom of the piston are designed to maintain a pistons shape. Forging advances in the last 20 years have negated this. Some of the slipper skirted pistons are far superior to the full skirts, particularly relative to skirt wear.
Full skirt or slipper should based on the internal design of the forging and the ovularity designed into the piston, not on the use intended for the piston.
Although I grant you, personal preference weighs heavily as well.
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Piston oilers off the main webs as we put in our dual turbo engines help a lot also.
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I find these to be an interesting phenomenom. The Nascar guys use them too. I'm becoming convinced that the pistons lack of flexibility is the reason you need them.
If so, proper skirt design (ovularity) is the answer.
Not sure in your case though, as I haven't seen your pistons.
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