FA20 oiling problems, study and solution - Page 11 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

DarkPira7e · 10-20-2022, 01:15 PM

Quote:

Originally Posted by Irace86.2.0

Necroed this to show cavitation in this video.

https://youtube.com/shorts/xM6zdim0yk4?feature=share

Sick video

Leviathan83 · 11-21-2022, 07:57 PM

Hello everyone,
hope you can help me, because I'm a newbe in engine building. I found a lot of infos in this thread, and I recently work on the timing cover to improve oil performance on FA20. I
- opened the oil galleries' covers
- ported oil galleries
- cleaned
- used an anaerobic sealent (Loctite 518) before reinstalling the covers and a threadlocker for the bolts
- installed an high volume oil pump kit
- used an engine lube to prime the new oil pump

Now I notice a little lube leak in the rotor of oil pump, after installing the cover... If I spin a little, some lube came out (see attached picture)... Maybe it's normal, I don't know.

Do I have to worry?

Rotor with cover installed and lube leak (this is the inside view on the timing chain cover):

Oil pump primed before installing the cover

NoHaveMSG · 11-21-2022, 09:47 PM

Quote:

Originally Posted by Leviathan83

Now I notice a little lube leak in the rotor of oil pump, after installing the cover... If I spin a little, some lube came out (see attached picture)... Maybe it's normal, I don't know.

Do I have to worry?

The only thing sealing the pump in the cover is a slight amount of friction. It's normal.

Ultramaroon · 11-21-2022, 11:48 PM

Think about it this way. It has to leak a little in order to lubricate itself.

Leviathan83 · 11-22-2022, 12:28 PM

Quote:

Originally Posted by NoHaveMSG

The only thing sealing the pump in the cover is a slight amount of friction. It's normal.

Perfect! Thanks!

Quote:

Originally Posted by Ultramaroon

Think about it this way. It has to leak a little in order to lubricate itself.

I thought about that, but I wasn't sure... Thanks!

Ultramaroon · 11-22-2022, 01:43 PM

Quote:

Originally Posted by Leviathan83

I thought about that, but I wasn't sure... Thanks!

Most welcome! Good luck with your build.

sweetfrs · 07-25-2025, 07:46 PM

Tracked my car for 30k miles on stock engine it finally spun a bearing in 2019. car sat for years in my shop then finally last winter we did a fully forged low compression engine with ported heads everything really nice. At the track last week it seized haven’t taken it apart yet. But I think I added the oil cooler and starved it

DarkPira7e · 07-25-2025, 09:49 PM

Quote:

Originally Posted by sweetfrs

Tracked my car for 30k miles on stock engine it finally spun a bearing in 2019. car sat for years in my shop then finally last winter we did a fully forged low compression engine with ported heads everything really nice. At the track last week it seized haven’t taken it apart yet. But I think I added the oil cooler and starved it

Damn, this hurts to hear. Was it all new components or was anything reused? There are filter screens and things that are so easy to overlook if you don't know Subarus. Sucks, I'm sorry

blsfrs · 07-27-2025, 11:38 AM

Quote:

Originally Posted by sweetfrs

Tracked my car for 30k miles on stock engine it finally spun a bearing in 2019. car sat for years in my shop then finally last winter we did a fully forged low compression engine with ported heads everything really nice. At the track last week it seized haven’t taken it apart yet. But I think I added the oil cooler and starved it

What oil cooler did you add and what were your oil pressure and temps? The Jackson Racing dual rad has been known restrict oil flow.

NoHaveMSG · 07-29-2025, 11:20 PM

Quote:

Originally Posted by sweetfrs

Tracked my car for 30k miles on stock engine it finally spun a bearing in 2019. car sat for years in my shop then finally last winter we did a fully forged low compression engine with ported heads everything really nice. At the track last week it seized haven’t taken it apart yet. But I think I added the oil cooler and starved it

Seized? Or just won’t turn over? Usually when I think seized I think piston/rings. Oil starve will kill the #2 or #3 rod bearing long before it will seize anything.

blsfrs · 07-30-2025, 10:12 PM

Quote:

Originally Posted by NoHaveMSG

Seized? Or just won’t turn over? Usually when I think seized I think piston/rings. Oil starve will kill the #2 or #3 rod bearing long before it will seize anything.

My FA20 "seized" because of a broken piston.

new2subaru · 07-30-2025, 10:28 PM

That's broken alright!

Eaton PSI · 08-01-2025, 10:16 AM

On the positive side, it may not have spun any bearings which would be a pleasant change for an FA20

bcj · 08-01-2025, 10:51 AM

Name: blowed_up.jpg
Views: 137
Size: 38.6 KB

11-21-2022, 07:57 PM	#142
Leviathan83 Junior Member Join Date: Mar 2017 Drives: GT86 Location: Italy Posts: 7 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Hello everyone, hope you can help me, because I'm a newbe in engine building. I found a lot of infos in this thread, and I recently work on the timing cover to improve oil performance on FA20. I - opened the oil galleries' covers - ported oil galleries - cleaned - used an anaerobic sealent (Loctite 518) before reinstalling the covers and a threadlocker for the bolts - installed an high volume oil pump kit - used an engine lube to prime the new oil pump Now I notice a little lube leak in the rotor of oil pump, after installing the cover... If I spin a little, some lube came out (see attached picture)... Maybe it's normal, I don't know. Do I have to worry? Rotor with cover installed and lube leak (this is the inside view on the timing chain cover): Oil pump primed before installing the cover Last edited by Leviathan83; 11-21-2022 at 08:22 PM.

11-21-2022, 11:48 PM	#144
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1118 Post(s) Tagged: 9 Thread(s)	Think about it this way. It has to leak a little in order to lubricate itself. __________________ service manuals

08-01-2025, 10:16 AM	#153
Eaton PSI Member Join Date: Mar 2023 Drives: 2013 86 Location: melbourne VIC Posts: 82 Thanks: 3 Thanked 46 Times in 26 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	On the positive side, it may not have spun any bearings which would be a pleasant change for an FA20 __________________ 2014 GT86, 2.2L big bore, harrop supercharged

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07-25-2025, 07:46 PM	#147
sweetfrs Senior Member Join Date: Mar 2013 Drives: 2013 FRS Location: Seattle, WA Posts: 406 Thanks: 110 Thanked 59 Times in 51 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Tracked my car for 30k miles on stock engine it finally spun a bearing in 2019. car sat for years in my shop then finally last winter we did a fully forged low compression engine with ported heads everything really nice. At the track last week it seized haven’t taken it apart yet. But I think I added the oil cooler and starved it

07-30-2025, 10:28 PM	#152
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