2.5" custom NON-mandrel bent exhaust piping?
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2.5" custom NON-mandrel bent exhaust piping?
I know that mandrel bent is the way to go for better flow but there aren't any shops locally here with a mandrel bending machine. So what difference if any would a custom crimp piping opposed as to mandrel bent make? Are we talking 1-2 horsepower? I would like to compliment my JDM header and 2.5" testpipe with a full 2.5" exhaust as well. There is a shop down the street from me that could do the 2.5" piping and everything for $100 and he says that the crimp style won't make that much of a diff.
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From: NJ, USA
Re: 2.5" custom NON-mandrel bent exhaust piping? (eTec)
I wouldn't get it. Totally defeats the purpose, especially since you have a JDM 2.5" collector/header. If you can't get custom mandrel bent, than just get a good aftermarket exhaust. They are mostly 60mm piping (aprx. 2.38") and flow pretty well. You can get a reducer from SMSP to ease the transition from the 2.5" to 2.38" piping. An N1 style system will flow better. Its worth the $400-$500 for the mandrel bent aftermarket catback.
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From: MD
Re: 2.5" custom NON-mandrel bent exhaust piping? (TurboSohc)
its not worth it at that dia, i am tired of these people reading super street and talking ****, do a flow test on 2.5 mandrel and crush, i bet you will be suprized by the results, there not much difference at all extremely minimal, i don't care if the people come here and flame me but i know i know the next exhaust i buy it gonna be about $400 cheap then my thermal and it going to produce more mid-high range power.
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From: In My Shoe
Re: 2.5" custom NON-mandrel bent exhaust piping? (eTec)
There's a shop that sells mandrel bent corners but i cant remember the name. Anybody else know what im talking about ?? You could just buy the corners and take them to the shop and have them weld it up and it will still save you some money.
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Re: 2.5" custom NON-mandrel bent exhaust piping? (Civ-JDM)
its not worth it at that dia, i am tired of these people reading super street and talking ****, do a flow test on 2.5 mandrel and crush, i bet you will be suprized by the results, there not much difference at all extremely minimal, i don't care if the people come here and flame me but i know i know the next exhaust i buy it gonna be about $400 cheap then my thermal and it going to produce more mid-high range power.
I know the census around here favors mandrel bent piping but this only compared to the stock, what 2"?...crush piping. You add another half of inch to that, even though it has crush bends the bigger piping has to help somehow. I have to agree with Civ-JDM, the dif has to be minimal.
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Re: 2.5" custom NON-mandrel bent exhaust piping? (Fillmore Slim)
There's a shop that sells mandrel bent corners but i cant remember the name. Anybody else know what im talking about ?? You could just buy the corners and take them to the shop and have them weld it up and it will still save you some money.
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From: In My Shoe
Re: 2.5" custom NON-mandrel bent exhaust piping? (eTec)
Not what i have seen. Its dirt cheap to have it all welded up plus you have an exhaust to your specs. You only buy the corners from a place like://www.burnsstainless.com/ and use the shops piping for the rest. its a cheaper alternative. whatever you like or can afford, I talk smack all the time about getting a custom exhaust but would probably just buy a mandrel bent cat back for my next one.
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From: NJ, USA
Re: 2.5" custom NON-mandrel bent exhaust piping? (Fillmore Slim)
You already have an N1 catback? Then why waste your time and money on a custom piece? Unless you have serious mods, you're N1 catback should be more than adequate to do the job. Get the SMSP reducer if you want it.
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From: SF Bay Area, CA, US
Re: 2.5" custom NON-mandrel bent exhaust piping? (eTec)
its not worth it at that dia, i am tired of these people reading super street and talking ****, do a flow test on 2.5 mandrel and crush, i bet you will be suprized by the results, there not much difference at all extremely minimal, i don't care if the people come here and flame me but i know i know the next exhaust i buy it gonna be about $400 cheap then my thermal and it going to produce more mid-high range power.
So your saying there is a minimal difference? I've already got a N1 catback so I'm curious as to whether or not the 2.5" crimp piping would do any harm.
I know the census around here favors mandrel bent piping but this only compared to the stock, what 2"?...crush piping. You add another half of inch to that, even though it has crush bends the bigger piping has to help somehow. I have to agree with Civ-JDM, the dif has to be minimal.
So your saying there is a minimal difference? I've already got a N1 catback so I'm curious as to whether or not the 2.5" crimp piping would do any harm.
I know the census around here favors mandrel bent piping but this only compared to the stock, what 2"?...crush piping. You add another half of inch to that, even though it has crush bends the bigger piping has to help somehow. I have to agree with Civ-JDM, the dif has to be minimal.
IMHO, if you're going to run with altezza lights, blacked out headlights, bright yellow racing stripe, tenzo/revo/cheapcrap seats, short ram POS intake, OBX headers, etc etc... then by all means, keep building that low-budget empire of yours upon that car. but just because you can't find anyone locally to do mandrel bending for you, dont go and convince yourself that crush bending makes a "minimal" difference.
[Modified by JDM EG6, 8:11 PM 5/21/2002]
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From: MD
Re: 2.5" custom NON-mandrel bent exhaust piping? (JDM EG6)
its not worth it at that dia, i am tired of these people reading super street and talking ****, do a flow test on 2.5 mandrel and crush, i bet you will be suprized by the results, there not much difference at all extremely minimal, i don't care if the people come here and flame me but i know i know the next exhaust i buy it gonna be about $400 cheap then my thermal and it going to produce more mid-high range power.
So your saying there is a minimal difference? I've already got a N1 catback so I'm curious as to whether or not the 2.5" crimp piping would do any harm.
I know the census around here favors mandrel bent piping but this only compared to the stock, what 2"?...crush piping. You add another half of inch to that, even though it has crush bends the bigger piping has to help somehow. I have to agree with Civ-JDM, the dif has to be minimal.
i don't know what car you drive, but OEM exhausts are mandrel bent. the difference between a crush and mandrel bend depends on the angle that you are bending it. crush bending forces the flow the taper causing a significant number of backpressure points when you have multiple bends like this. futhermore, 90º bends already reduce flow by a quarter of what it would be in a straight pipe.
IMHO, if you're going to run with altezza lights, blacked out headlights, bright yellow racing stripe, tenzo/revo/cheapcrap seats, short ram POS intake, OBX headers, etc etc... then by all means, keep building that low-budget empire of yours upon that car. but just because you can't find anyone locally to do mandrel bending for you, dont go and convince yourself that crush bending makes a "minimal" difference.
[Modified by JDM EG6, 8:11 PM 5/21/2002]
So your saying there is a minimal difference? I've already got a N1 catback so I'm curious as to whether or not the 2.5" crimp piping would do any harm.
I know the census around here favors mandrel bent piping but this only compared to the stock, what 2"?...crush piping. You add another half of inch to that, even though it has crush bends the bigger piping has to help somehow. I have to agree with Civ-JDM, the dif has to be minimal.
i don't know what car you drive, but OEM exhausts are mandrel bent. the difference between a crush and mandrel bend depends on the angle that you are bending it. crush bending forces the flow the taper causing a significant number of backpressure points when you have multiple bends like this. futhermore, 90º bends already reduce flow by a quarter of what it would be in a straight pipe.
IMHO, if you're going to run with altezza lights, blacked out headlights, bright yellow racing stripe, tenzo/revo/cheapcrap seats, short ram POS intake, OBX headers, etc etc... then by all means, keep building that low-budget empire of yours upon that car. but just because you can't find anyone locally to do mandrel bending for you, dont go and convince yourself that crush bending makes a "minimal" difference.
[Modified by JDM EG6, 8:11 PM 5/21/2002]
[Modified by Civ-JDM, 9:17 PM 5/21/2002]
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From: Orange County, So Cal
Re: 2.5" custom NON-mandrel bent exhaust piping? (SkyeC)
JC Whitney sells mandrel bends.. its like less than 10 bucks or soemthing
QUESTION:
If i were to buy mandrel bent corners for my exhaust, what kinda corners would i need??? 45 degree, 90 degree?? and how many...this is for a 97 ciivc hatch.
Eddie
QUESTION:
If i were to buy mandrel bent corners for my exhaust, what kinda corners would i need??? 45 degree, 90 degree?? and how many...this is for a 97 ciivc hatch.
Eddie
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Re: 2.5" custom NON-mandrel bent exhaust piping? (SkyeC)
I had 2.5" crush bent for one day. It felt like ****.
Went back to 60mm GReddy SP. My favorite exhaust for the EH3 ever made.
Went back to 60mm GReddy SP. My favorite exhaust for the EH3 ever made.
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From: soCaL, usa
Re: 2.5" custom NON-mandrel bent exhaust piping? (eTec)
lets b honest here..
going up in the size up exhaust piping for honda or even put on a header wont make much of a difference on honda/acura cars..
but in the long run...a mandrel bent is worth it..u have better flow...a bitsy itsy more power...so its worth it..
well...adding an exhaust only make minimal difference from stock..
so u cant really compare a crushed n a mandrel..
imo...100 bucks for a mandrel custom piping is worth it....go for it..
going up in the size up exhaust piping for honda or even put on a header wont make much of a difference on honda/acura cars..
but in the long run...a mandrel bent is worth it..u have better flow...a bitsy itsy more power...so its worth it..
well...adding an exhaust only make minimal difference from stock..
so u cant really compare a crushed n a mandrel..
imo...100 bucks for a mandrel custom piping is worth it....go for it..
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Joined: Mar 2002
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Re: 2.5" custom NON-mandrel bent exhaust piping? (JDM EG6)
i don't know what car you drive, but OEM exhausts are mandrel bent. the difference between a crush and mandrel bend depends on the angle that you are bending it. crush bending forces the flow the taper causing a significant number of backpressure points when you have multiple bends like this. futhermore, 90º bends already reduce flow by a quarter of what it would be in a straight pipe.
IMHO, if you're going to run with altezza lights, blacked out headlights, bright yellow racing stripe, tenzo/revo/cheapcrap seats, short ram POS intake, OBX headers, etc etc... then by all means, keep building that low-budget empire of yours upon that car. but just because you can't find anyone locally to do mandrel bending for you, dont go and convince yourself that crush bending makes a "minimal" difference.
IMHO, if you're going to run with altezza lights, blacked out headlights, bright yellow racing stripe, tenzo/revo/cheapcrap seats, short ram POS intake, OBX headers, etc etc... then by all means, keep building that low-budget empire of yours upon that car. but just because you can't find anyone locally to do mandrel bending for you, dont go and convince yourself that crush bending makes a "minimal" difference.
And what the hell is all that about altezzas and **** man! Wasted space for this possibly informative thread.
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