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02-21-2011, 05:19 AM | #1 |
Scooby Newbie
Member#: 169062
Join Date: Jan 2008
Chapter/Region:
SCIC
Location: orange california
Vehicle:2006 STi WRB |
what main bearing do i order?
Hello, I did alot of searching here and on nasioc but came up empty. I need to order some main bearings but I see the websites give a #3 and a #5 as the size. how do I figure this out lol. my micrometers or calipers only measure in inches and or millimeters not by gauges or what ever that means. also, I see I can get ACL race bearing or Clevites. I see everyone likes the ACL's but on the info on them it states that they will only last for DD and limited competition use. I am use to rebuilding small and big block chevy's and so i use Clevites to build them and they take a good beating and last. Is there really a measurable advantage to using ACL's or Clevites? I also plan on coating them with swaintech's coatings.
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02-21-2011, 05:41 AM | #2 |
Scooby Guru
Member#: 173241
Join Date: Feb 2008
Chapter/Region:
TXIC
Location: Houston, Tx
Vehicle:2002 s256 twinscroll now with one more gear |
#3 and #5 refer to thee placement of the thrust bearing assuming its a 96 or newer block it will be #5. Thrust, as for clevites, give them a try let us know how they go, most people just stick with Why they know, they don't really feel like " trying something " on a motor they are dumping thousands into
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02-21-2011, 07:20 AM | #3 |
Scooby Specialist
Member#: 51480
Join Date: Dec 2003
Chapter/Region:
International
Location: The Netherlands
Vehicle:1984 AM5, 1984 AF1, 1994 BC4, 2015 Outback |
1998 or newer is rear thrust (#5)....
Most people use ACL as they're good and cheap. |
02-21-2011, 04:32 PM | #4 |
Scooby Newbie
Member#: 169062
Join Date: Jan 2008
Chapter/Region:
SCIC
Location: orange california
Vehicle:2006 STi WRB |
thanks guys
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02-21-2011, 09:24 PM | #5 |
Scooby Newbie
Member#: 270805
Join Date: Jan 2011
Chapter/Region:
NESIC
Location: Maine
Vehicle:2005 WRX Silver |
id go with cosworth main and rod bearings, there a little more expensive but they will last no matter the beating.
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02-21-2011, 09:42 PM | #6 | |
Scooby Specialist
Member#: 5810
Join Date: Apr 2001
Chapter/Region:
Tri-State
Location: Easton PA
Vehicle:2001 S366 2.5RS |
Quote:
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02-22-2011, 01:33 AM | #7 |
Scooby Specialist
Member#: 51480
Join Date: Dec 2003
Chapter/Region:
International
Location: The Netherlands
Vehicle:1984 AM5, 1984 AF1, 1994 BC4, 2015 Outback |
Besides, the bearing quality only matters in moments of oil starvation...
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02-22-2011, 02:14 AM | #8 |
Scooby Newbie
Member#: 270805
Join Date: Jan 2011
Chapter/Region:
NESIC
Location: Maine
Vehicle:2005 WRX Silver |
im just saying from experience man, my buddy has a bugeye which now has cosworth bearings cause his acl's **** on him twice, hes done 50k+miles on the cosworth's with 500whp and had good luck, i guess it really just depends on preference, i'd take cosworth over anything
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02-22-2011, 07:01 AM | #9 | |
Scooby Specialist
Member#: 28685
Join Date: Nov 2002
Location: Reno, Nevada
Vehicle:2004 FXT 4EAT very STi'd |
Quote:
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02-22-2011, 08:05 AM | #10 |
Scooby Specialist
Member#: 51480
Join Date: Dec 2003
Chapter/Region:
International
Location: The Netherlands
Vehicle:1984 AM5, 1984 AF1, 1994 BC4, 2015 Outback |
ACL even makes the OEM bearings but that does not mean all bearings are identical...
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02-22-2011, 08:08 AM | #11 |
Scooby Specialist
Member#: 28685
Join Date: Nov 2002
Location: Reno, Nevada
Vehicle:2004 FXT 4EAT very STi'd |
I'd still be willing to lay a wager that the fault was not with the bearings themselves.
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02-22-2011, 11:48 AM | #12 |
Scooby Specialist
Member#: 81633
Join Date: Feb 2005
Location: Dillon, CO
Vehicle:'98 RS-T Blue |
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02-22-2011, 12:56 PM | #13 |
Scooby Guru
Member#: 82989
Join Date: Mar 2005
Chapter/Region:
SWIC
Location: Arizona
Vehicle:2002 WRX Hybrid EJ257 |
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