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| kstevo |
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What yous reckon the 3.0" is too much for the I6? I used to have one on an EB and it sounded like it had some serious grunt, almost like I imagine the V8 would sound like - it did give it a noticable increase in power and am contemplating upgrading the 2.5" on my EF to a 3.0"... what do yous all think?
Would a 3.0" provide a bigger increase in power over a 2.5"?
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
sounded like and actualy had grunt are two very different things.
it's too big. |
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| FLASH |
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If its turbo go for it, if it n/a stick with the 2 1/2.
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| NUTZEF |
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on an n/a motor u might see a power increase at like 5000-5500
but by that time u are changing gears. u loose all your low-mid end. 2.5 is the way to go on an n/a. thats my 2 cents anyway.
_________________ WOLF V500, t66(ar70 compressor), rochester 550cc injectors, borgg 265l fuel pump, 48mm turbosmart gate, turbosmart plumb back bov, 600x300x100 cooler, 3 inch zorst , 3.45 lsd, xr6 head, wade 1604 cam, adjustable cam gear, K&N pod filter, on 10psi and manual convertion exedy button clutch. 285.6rwkw |
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| Grechie |
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ive got a full 3 inch exhuast on mine and i lost no low or mid power, but again i didnt notice any gains up high either
_________________ Ford Falcon EA Naturally Aspirated 4.0L i6 |
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| kstevo |
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Cheers guys! Gonna stick with the 2.5"
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| Grimketel |
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you would need high end cam, headwork and bottom end work to worry about 3 inch on 4 litres of motor.
grech you would loose bottom end torque, you may not have noticed it though with a t-5 manual pushing 3.7's, as that gearing is quite short and close together. put a 3 inch on an auto with regular ratio and you will definately feel the engine struggling to push the denser cooler gas out a 3 inch at low rpm. just remember- 2.25- mild na engine 2.5- warm na engine 3 inch- manic na/turbo engine
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| krisisdog |
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2.25" press bent is a std exhaust.
2.5" press bent is a std XR6 exhaust. Dont see much point at all buying a 2.25" mandrel bent, as itd flow very similar to a stock XR6 exhaust. |
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