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Old 06-17-2013, 11:46 PM   #1
mctator
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Default Identifying thrust bearing location

I'm preparing for a build on an 05' 2.5L 5 spd N/a engine. Looking for main bearings I've found that the thrust bearing can be located in journal position #5 or #3. Is there any way to identify which position it is before I order my parts without tearing down the engine first? Every source I've found said the only way to tell is by disassembling the engine.
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Old 06-18-2013, 12:47 AM   #2
mctator
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So i've found that the thrust bearing location depends on which phase block I have. I looked on the passenger side behind the p/s pump and found the word "japan" cast into the block but did not find any of the ridges used to identify the phase. Is there any other way to determine which block I have?
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Old 06-18-2013, 12:55 AM   #3
subi400
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Hi,

All the phase 1 engines 1.8 from like 93 to 97, the 2.2 from 93-98 and the ej25D from 96-98 had the thrust bearing in #3 bearing journal or middle of the block. All the 2.2 and 2.5 NA engines starting in 99, the 02-05 wrx 2.0 engine, the 06 + 2.5 wrx and the 04+ sti engine had the thrust bearing at the back of the block or #5 bearing journal.

So, your block is a phase 2 so the thrust bearing will be in #5 bearing journal. What bearing clearances are you shooting for?

Hope that helps!

~Josh
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Old 06-18-2013, 06:42 PM   #4
mctator
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Thanks a ton for your response. We're going for stock bearing sizes for main and rod bearing so the clearance will hopefully be in the .0028 to the .013 range. And just to confirm, since my block is a phase 2 i'll need the 52mm rod bearings?
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Old 06-18-2013, 11:06 PM   #5
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Yes, 52mm rod bearing journals. Same as all the other phase II cranks.


Jay
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Old 06-19-2013, 02:46 AM   #6
subi400
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Quote:
Originally Posted by mctator View Post
Thanks a ton for your response. We're going for stock bearing sizes for main and rod bearing so the clearance will hopefully be in the .0028 to the .013 range. And just to confirm, since my block is a phase 2 i'll need the 52mm rod bearings?
Yes, as Storm said, the journal size is 52mm. For the bearing clearances, and this being a stock motor, I would shoot for like 0.0012 for mains and like 0.0014 for rods.
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