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EA82 to EA82T ????
Posted 23 August 2005 - 02:16 PM
Posted 23 August 2005 - 02:28 PM
Posted 23 August 2005 - 02:44 PM
the EA82 and EA82T have different compression ratio pistons. best to use the EA82T pistons for a turbo application. you can use the NA block but the turbo block will give you more power and be be more reliable.
The turbo block will NOT give you more power. What it will do is allow for higher boost with lower chances of detonation.
I like my N/A EA82T:D
Back on topic.. The actual motor itself is the easy part. You also need the exhaust, xmember, wiring harness, ECU and other assorted things like MAF and such. Best to get the whole car for donor parts.
Posted 23 August 2005 - 03:39 PM
either way, believe calebz more than me i'm still learning the turbo stuff.
Posted 23 August 2005 - 04:55 PM
Posted 26 August 2005 - 01:42 AM
Posted 26 August 2005 - 01:55 AM
I'm using an NA shortblock with turbo heads and a TD04 from a WRX.. no explosions yet:D
I've also done the NA to turbo conversion on a volvo 740.. I can honestly say the NA volvo motor really LIKES the turbo..lol
Posted 26 August 2005 - 07:39 AM
x = psi of boost
SC = static compression (ie: without the turbo, what is the compression of the pistons?)
ac = actual compression at given psi
so, with that, if you know your built subie motor runs just fine at 12:1 pistons with no detonation issues running pump gas (be it 92 or 93 or whathaveyou) then you know that's a ballpark figure for the max compression you can have after boost too...
so, with 7.7:1 pistons you would need 21psi of boost to reach a compression ratio of about 12:1 at max boost. With 8.7:1 pistons you're looking at only 13.2psi of boost. Why does it seem like the n/a pistons give you more power? more bottom end. it's harder to get a 7.7:1 motor to spool a turbo that can flow 21 psi. but if you got it right, it would have a higher crank hp than the other motor at 13.2psi. (but a longer wait) that's why some people go with superchargers and blowers, is because there is no spool time. but not to forget, I don't know if any subaru internals in the EA82 motors could withstand 21psi for very long.
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