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View Full Version : Main bearing/rod journal oil clearance



Code-Aye
07-23-2013, 08:30 AM
Does anyone know correct oil clearances for a b16a2 with acl bearings? I keep finding different specs
not sure if my motor was ever line honed before and since im using arp main studs its required

i found one guy said .018-.020 for all mains/ rods .016-.018 for acl bearings

or should i go by alldata which says for the b16a2

Main bearing-to-journal clearance
No. 1,2,4 and 5 (0.0009-0.0017)
no. 3 journal (0.0012-0.0019)

Rod bearing-to-journal oil clearance
(0.0013-0.0020)
note i have eagle rods

the block has previously had all acl std bearings in it, i plan on running acl std's again just need correct spec for them so i can see if the motor has ever been line honed
what would u run for daily acl race, acl std or honda? which is best for daily driven around 400?
thanks in advance

SPOOLIN
07-23-2013, 07:29 PM
with acl std, the target is usually around .002

same with rods....sometimes looser.

in most cases the arp studs don't distort the main bore...so it may not have ever been bored because it didnt need it.

Code-Aye
07-24-2013, 08:27 AM
Thanks for the info

Code-Aye
07-24-2013, 08:29 AM
For a daily would u run acl race or acl std's

SPOOLIN
07-24-2013, 09:29 PM
acl std DURAGLIDE, not ALUGLIDE

but Race is fine, they are a little harder and marginally thinner almost un measurably thinner since they dont have the flash coating.

Code-Aye
07-25-2013, 08:10 AM
thanks