performance

87hilux7mge · 05-12-2011, 02:42 AM

apologies, i should have used the term hypereutectic. high silica (meant to be silicon) content was a bad choice of words. anyway, supra forums has an article concerning toyotas piston manufacturing processes from the late 80s to the early 90s.

they transfered from standard cast/hypoeutectic pistons to a hypereutectic, which had a higher silicon amount in it (albeit, only about 4-8% more: 8-10% vs 12-18%)

so in theory the piston can "absorb" more abuse from the inherent forces of a boosted application.

and the KVAFM, i stand corrected. i made assumptions about it and the fuel cut situations based on my prior experiences with other applications. anyway, im not well versed with them, so thanks for the correction!

i learned something today lol

05-12-2011, 02:42 AM	#6
87hilux7mge walbro fp Join Date: Dec 2010 Location: spokane Posts: 479	apologies, i should have used the term hypereutectic. high silica (meant to be silicon) content was a bad choice of words. anyway, supra forums has an article concerning toyotas piston manufacturing processes from the late 80s to the early 90s. they transfered from standard cast/hypoeutectic pistons to a hypereutectic, which had a higher silicon amount in it (albeit, only about 4-8% more: 8-10% vs 12-18%) so in theory the piston can "absorb" more abuse from the inherent forces of a boosted application. and the KVAFM, i stand corrected. i made assumptions about it and the fuel cut situations based on my prior experiences with other applications. anyway, im not well versed with them, so thanks for the correction! i learned something today lol __________________ 87 toyota 4x4 single cab short box pickup, 7MGZE.