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Old 09-08-2010, 05:06 PM   #1
340Duster
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2002 PSM WRX 16G-XT
'13 500 Abarth

Default Oil pump and bearing clearance recommendations for EJ20 build

After a few days of searching and reading. I haven't been able to find much information on some recommendations for specs on a EJ20 build.

I spun a bearing in my engine after 105k miles on a high RPM pull, so building to avoid that is I suppose part of the paranoia.

With that said, Will the 11mm pump work with the EJ20 block? The goal for the engine is eventually around 310whp and maintaining the stock redline. My plan was to use the 11mm pump and run on the loose side of the stock specs of bearing clearances, however, someone with more insight that could give me more concrete numbers would be a huge help.

Final thought, is it true that the 04 and up crank has better oiling than the earlier production models?

Thanks in advance for any help.
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Old 09-08-2010, 05:07 PM   #2
jigga
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what oil were you using when your engine expired?
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Old 09-08-2010, 05:10 PM   #3
340Duster
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Quote:
Originally Posted by jigga View Post
what oil were you using when your engine expired?
Rotella 5-40w, It was in a 5th gear pull up to about 5k, kinda lost power so I killed it and had it towed home the next day. I haven't had the time to pull the engine yet, only about half way there. It is/was running on a new tune at about 19psi in 4th-5th.
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Old 09-08-2010, 08:35 PM   #4
xstock
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I just posted a similar question in the 2.0 turbo section.

Are the new EJ205 blocks built 'better' than the ones from 2002?

I too was doing a high RPM pull and pooched the bearings and if I rebuild that thing or buy a new EJ205 I'd prefer to not have that happen again.

I was running Mobil 1 5W/30 so you were a lot smarter than I was.

Hopefully someone can answer this.
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Old 09-08-2010, 08:44 PM   #5
kenikh
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Pin your case. High RPM and high power on an opposed cylinder motor makes the mains walk, causing the bearing to spin. Pinning the case keeps the mains aligned.
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Old 09-09-2010, 01:03 PM   #6
340Duster
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'13 500 Abarth

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No insight in changes in the crank from 02 to 05? Or if the 11mm pump will work with the EJ20 case?
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