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View Full Version : anyone know the stock piston ring size??



redforcedbmw
09-10-2005, 01:29 AM
as stated in title, for the m50b25 motor

redforcedbmw
09-11-2005, 04:06 AM
ttt

enda320
09-11-2005, 09:32 AM
vanos or not? there are a few listed on the ETK, non vanos are 83.980 and 84.060mm for 0 and 00. not entirely sure of 0/00 grades, probably brand new, and average wear?

next up is 84.230 and 84.480 which are the 1st and 2nd oversize for rebored pistons

from 9/92 (vanos..) they are only listed as 0, 00, +.25 and +.50, with no mention of the exact sizes.
both Mahle and KS pistons were available

redforcedbmw
09-11-2005, 02:40 PM
its for the vanos 2.5L. i just thought id see if someone had the answer so i could order them before i pull them out. ill just see when they come out. thanks for replying though