Pistons

[Tyler S]

So im redoing the top end in a 1987 banshee. Stock no mods. I was wondering what people think about namura pistons vs wiseco pistons. I know that wiseco is forged and namura is cast but thats about it. What do you guys recommend?

[ryan954]

Wiseco. Ive used both. Wiseco last longer

[Atomic Monkey]

IMO it depends on the purpose of the engine. I've gotten better longevity out of cast pistons in engines that don't really get beat, and the forged held up better in engines that got beat.

I.e. I run cast pistons in my snowmobile, they simply last longer than Wiescos. But in my dirt bikes that were jetted on the edge and beat, the forged held up better.

[sprinklerman]

IMO it depends on the purpose of the engine. I've gotten better longevity out of cast pistons in engines that don't really get beat, and the forged held up better in engines that got beat.

I.e. I run cast pistons in my snowmobile, they simply last longer than Wiescos. But in my dirt bikes that were jetted on the edge and beat, the forged held up better.

^ this. Especially on a mild build,cast pistons (IF set up properly ) last a long time.

[salmon_slayer06]

forged,,,,, good warm up to expand correctly. cast..... expand easier i guess.

[sprinklerman]

forged,,,,, good warm up to expand correctly. cast..... expand easier i guess.

Less actually.

I should clarify. I'm speaking strictly about commonly available Banshee pistons. Not cast vs forged pistons across the board. The alloys in the piston effects the expansion more than anything.