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Old 12 Nov 2011, 02:01 pm
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Posts: 10
Default What is it that i have to do to make engine internals stronger for big turbo on a 2000 civic si?

what all engine "internals" need to be changed for boosting 10psi?
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Old 12 Nov 2011, 02:16 pm
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Posts: 65

Pistons, camshafts, fuel injectors and more
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Old 12 Nov 2011, 02:31 pm
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Posts: 22

You haven't told us anything about the turbo yet so how are we suppose to help you?
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Old 12 Nov 2011, 02:47 pm
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Join Date: Jun 2008
Posts: 579

forged low compression pistons 9:1 with rings $450

forged rods like eagle rods $350

acl race bearings w/ thrust washer $125

ARP head studs $125

stock head

boosting 10psi wont be a problem

if you want more power

supertech valve springs and ti retainers $300

any turbo camshafts $500

adjustable cam gears $100

port & polish head $500

REMEMBER! its all about tuning to achieve the maximum power
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Old 12 Nov 2011, 03:01 pm
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Join Date: Aug 2009
Posts: 166

OMG what a load of twoddle you are being fed.

To boost at 10psi (9 is safer in case of boost creep) you need to change NOTHING in the INTERNALS. Any more than 10 and you will need to bring the compression down. You will need to intercool the charge yes and get a good ECU fuel/ign map solution but you already know that. Even the MAP sensor is good for 10.66psi. It's the D15 that has weak rods so don't worry about that.

You don't need a huge turbo to create 10psi either, a T25 or T3 like mine is ample. Big turbo = late boost & more to ditch through your wastegate. I tried a big T3/T4 hybrid first and it was horrible.Don't change your cam either, stock is better for your needs. Use 440cc (ish) injectors.
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