Contour pistons

[65Scout80]

Does anybody know why IH used the funky contour pistons and if they offered any advantages

 

[Zaedster]

Pre-emissions vs. post.

 

[FDChappie]

I believe the concept behind the contour pistons was to increase chamber swirl and combustion efficiency. It didn't work out that way.

 

[65Scout80]

Thanks guys.