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Old 06-14-2004, 02:28 AM   #1 (permalink)
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okay, its been on my mind all night after my friend asked me about the E46's. so what is the difference? theres gotta be one. I know they both displace 2.5 liters, but whats different? ratios or compression or what, Im talkin engine and chassis stuff, not interior or exterior works(if there even is a diff)
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Old 06-14-2004, 03:26 AM   #2 (permalink)
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323 performance: 170 hp | 170 tq

325 performance: 184 hp | 175 tq
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Old 06-14-2004, 09:32 AM   #3 (permalink)
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Quote:
Originally posted by bimmer_boy@Jun 14 2004, 05:06 AM
323 performance: 170 hp | 170 tq

325 performance: 184 hp | 175 tq
correction:

323: 170hp 181tq
325: 184hp 175tq

engines are actually different but same displacement.

i believe exhaust system and drivetrain are a bit different
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Old 06-14-2004, 01:08 PM   #4 (permalink)
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Quote:
Originally posted by woobiee+Jun 14 2004, 10:12 AM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (woobiee @ Jun 14 2004, 10:12 AM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-bimmer_boy@Jun 14 2004, 05:06 AM
323 performance: 170 hp | 170 tq

325 performance: 184 hp | 175 tq
correction:

323: 170hp 181tq
325: 184hp 175tq

engines are actually different but same displacement.

i believe exhaust system and drivetrain are a bit different [/b][/quote]
the engines arent terribly different. the 2.5L M54 didnt get all the improvements the 3L got, and still uses the 323's camshafts. however the 325 did get modified piston skirts and rings, slightly bigger diameter intake and exhaust manifolds, and a non-return fuel rail system.

here's a dyno comparison between the euro spec versions...
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