Thread: 4G63 vs EJ25
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Old 07-01-2010, 04:41 PM   #2
Scooby Specialist
Member#: 47646
Join Date: Nov 2003
Chapter/Region: RMIC
Location: CO
0511 RallyBaja
DGM Sedan


This has been covered. A lot. do a search.
Iron block = stronger
I4 = better spool
aluminum block, even semiclosed, isn't as strong
H4 = LONG exhaust path to turbo as well as for IC
More displacement is nice.

But if you are going to build something.... either way its gonna be a built motor, so who cares about stock anything. STi tranny is better, other drivetrain parts are a wash.
Buy what looks better.
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