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View Poll Results: How Strong ARE The Internals For The FA20?
Pretty Strong, I'd Say. 4 36.36%
Pretty Weak, I'd Say. 2 18.18%
Pretty Inconsequential, I'd Say. 5 45.45%
Voters: 11. You may not vote on this poll

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Old 10-13-2014, 11:59 AM   #1
chanomatik
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Default How Strong Are The Stock Internals?

I'm just curious as to how much power and to what duration of that power the stock engine has accepted before popping. I believe Full Blown got theirs up to around 700HP? It didn't last very long.

This isn't really a "how much power can it handle reliably" question because I don't believe in that concept. Too many factors. Just, "Oh, it maxed out at this many PSI and horsepower before we had to swap pistons and such."

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Old 10-16-2014, 04:16 PM   #2
soslow
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For a high compression NA Subaru motor?

Pretty strong.

Relative to most other manufacturers NA motors?

About par I'd guess.

I imagine, properly tuned, the FA20 will have no issue running ~9 PSI reliably as a DD for 100K+ miles if maintained properly and allowed to warm up before beating on it. Which is more than can be said for any other NA Subaru block.
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Old 10-16-2014, 04:21 PM   #3
chanomatik
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So which other NA motors are deemed stronger? I'm assuming F20 engine from the S2000 is included on that list.
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Old 10-20-2014, 01:51 PM   #4
my name is joe
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k series engines. and b series. I have a friend running a 13:7 compression ratio... insane
We wont know unless someone has a stress test or decides against the mass and build an all NA motor or decides to bring it to the very limit. Doubt the stock cams will even allow it that far but dont quote me on that.
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Old 10-20-2014, 05:32 PM   #5
OrbitalEllipses
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Over 400hp

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