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Dump pipe size?
Hey guys, for those with boosted cars, an street driven, would a 2.25 dump pipe be big enough? considering im only relative chasing 200hp max from my d-banger
Turbo chosen is TD04L, tuning it for 8psi max
Using log Cast manifold, as these are the preferred choice to use to clear Ac/ps, as such with the greddy kit
I have thought of 2.5, but the clearance for ac and ps is always in the back of my mind....
OR will 2.5 be better option?
Last edited by mugen_ctr; 20-08-2012 at 07:12 PM.
I <3 BOOST! D16+T SOHC
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2.25 will limit the power alot. i would recommend 2.5 min. even if u want to keep AC and PS the 2.5 should still clear it.
Car: 05' Civic Turbo Car: EK 97'
Motor - D17 Motor - B20T
Winton - 1:47 Winton - 1:46
7th Gen Melbourne #1
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and try to make all pipe diameters same
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Yes try to make all piping similar diameter and only go bigger towards the rear.
I would recommend 2.5", even 3" if you can fit it. I was running 6psi making 130kwatw with a stock exhaust but 2.5" down pipe, upgraded the rest to 3" and that figure boosted to 140+
i live my life full boost, one gear at a time.
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well atm my cat back is of 60mm diameter, so roughly 2.38 inch, so i figured maybe 2.25, but 2.5 is slighty larger, 3mm bigger, but than 2.25 is 3mm smaller... lol
so what do u guys say? bigger or smaller because of the cat back in question
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Upgrading your dump pipe will still net you gains, however best to go the whole way
i live my life full boost, one gear at a time.
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Originally Posted by xenonkuraz
Upgrading your dump pipe will still net you gains, however best to go the whole way
you do make a point, seen plenty of 180sx, wrx etc etc with bigger dumps an they do yield better results, but than again they are running like 3 inch cat backs an all hahahaha
Atm im more leaning towards to go for the 2.25 as its easier to fabricate meaning less time, less money hahaha, but ive seen a few dump pipes on ebay which ill most likely mod to fit my current setup, which are 2.5 so atm its im still researching up whats a viable option
cheers lads
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If you're getting a GReddy kit with the log manifold...it should come with the dump pipe too
i live my life full boost, one gear at a time.
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Originally Posted by xenonkuraz
If you're getting a GReddy kit with the log manifold...it should come with the dump pipe too
nah piecing my own kit, more of a challenge u could say lol
an plus i have a strong dislike with the greddy dump pipe, its a really crappy design, feels cheap an nasty if u ever seen the dump pipe in person
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May as well redo the whole setup in 3inch,you wont look back
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Originally Posted by EKVTIR-T
May as well redo the whole setup in 3inch,you wont look back
i have thought about that, but money is tight atm, and the car is more so a DD so as much as i wanna go further, at this stage ill just keep it at 60mm cat back system
but yeah, 3 inch system is on the wish list
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if its custom made then go 2.5 and u can work around your ac/ps
Car: 05' Civic Turbo Car: EK 97'
Motor - D17 Motor - B20T
Winton - 1:47 Winton - 1:46
7th Gen Melbourne #1
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