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Old 12-17-2015, 02:48 AM   #151
ALOKIN
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Member#: 348177
Join Date: Feb 2013
Chapter/Region: TXIC
Location: TX
Vehicle:
2002 Bugeye
Haltech GTX3584RS

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Quote:
Originally Posted by Myblack2006sti View Post
My king bearing on my last engine spun and I run acl now
Even the best bearings in the world cant protect from shoddy machine work or crap assembly practices....
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Old 12-17-2015, 09:53 AM   #152
Delphi
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Member#: 239335
Join Date: Feb 2010
Chapter/Region: W. Canada
Location: Edmonton, Alberta
Vehicle:
2011 WRX
WRB

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Quote:
Originally Posted by ALOKIN View Post
Even the best bearings in the world cant protect from shoddy machine work or crap assembly practices....
This. It wasn't the bearings that caused the spun bearing.
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Old 12-17-2015, 02:15 PM   #153
spoolinsti05
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2005 TickingTimeBomb
Jr tuned TT Sleeved

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OEM is the best
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Old 02-01-2017, 05:21 AM   #154
pivwani
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I would not be blaming the bearings and look at the clearances and along the journals. As we know the HX ACL bearings give an extra 0.001" oil clearance. This may be required depending on your required oil pressure output. If you have used King Bearings and they have spun, you need to ask why this happened and not just blame the bearings because they have failed. The bearings are designed to fail first to protect the crank and rod surfaces.
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Old 02-06-2017, 01:56 AM   #155
deom2i
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Join Date: Oct 2014
Chapter/Region: International
Location: Tanzania
Vehicle:
2011 sH9
Satin White

Default Bought ACL Bearing 5M8309H AND 4B8296H-STD.

Just bought ACL Bearing 5M8309H AND 4B8296H-STD to rebuild my WRX 2.0 Engine with stock piston and shaft.

I came to know about King bearing after purchase, these are manufactured in June 2016, lets hope they have corrected the clearance issue with this new ones.
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Old 12-25-2020, 01:33 AM   #156
benflynn
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Where are on this these days
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Old 01-12-2021, 07:21 PM   #157
GeoNV
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2009 WRX
dark grey metallic

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I just built an EJ255 with forged Manley H beam rods- my stock clearance ACL's had zero clearance- I mean none!
0.0003
-0.0003
-0.0001
-0.0003

Rod Journal sizes
2.0468
2.0468
2.0468
2.0468

I bought the extra oil clearance and eked out these after switching around a bunch of shells.
0.0019
0.0018
0.0016
0.0018

I'm nervous about that 0.0016.

The main bearings were
1 0.0013
2 0.0016
3 0.0015
4 0.0017
5 0.0013

and that's with pretty uniform journal diameters.

2.3621
2.3623
2.3622
2.3623
2.3623

Long story short- I wish I would have chosen King bearings.... I've been nervous about the ACL's since I put em in.

All of these measurements I took five times per part and averaged them- I remeasured anything that was more than a half thousandths different.

I checked with plastigauge as well to make sure I didn't make any math errors- they checked out. Except on the stock rod bearing size - I didn't even try.

Last edited by GeoNV; 01-12-2021 at 07:28 PM. Reason: Added journal sizes for rods.
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Old 01-25-2021, 01:21 PM   #158
idntvpe
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Default OEM bearings

What is the ballpark for max power that OEM bearings can take?
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