US Headers & Exhausts NA

[gslender]

Wouldn't make a difference, the idea is to have the 'pulses' of exhaust gas enter the collector at equally separate times. The order that this happens in is unimportant.

Sure, but when built by Chinese factory workers, they use their wicked maths and dodgy looking welds to alter how hot gasses expand - so tried and well understood header designs don't apply here. So order might be important to trick the hot gasses into going left instead of right etc... very complex and we can't propose to understand how the Chinese factory was expecting this to work.

G

[pezchops]

Wouldn't make a difference, the idea is to have the 'pulses' of exhaust gas enter the collector at equally separate times. The order that this happens in is unimportant.

Sure, but when built by Chinese factory workers, they use their wicked maths and dodgy looking welds to alter how hot gasses expand - so tried and well understood header designs don't apply here. So order might be important to trick the hot gasses into going left instead of right etc... very complex and we can't propose to understand how the Chinese factory was expecting this to work.

G

i am no expert but i googled it.
as i understand, for the collector to scavange the right volume of gasses from each cylinder the pipes must be the same length to the collector.
i think if there is a big difference in pipe lengths the gas pressure in each pipe will vary due to temperature/expansion after combustion.
then the BERNOULLI effect of the collector will draw different volumes of gas from each pipe??
does that sound right??

[sailaholic]

Sounds about right. What you missed though was gslenders reply was positively dripping with sarcasm.


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[project.r.racing]

Wouldn't make a difference, the idea is to have the 'pulses' of exhaust gas enter the collector at equally separate times. The order that this happens in is unimportant.

Sure, but when built by Chinese factory workers, they use their wicked maths and dodgy looking welds to alter how hot gasses expand - so tried and well understood header designs don't apply here. So order might be important to trick the hot gasses into going left instead of right etc... very complex and we can't propose to understand how the Chinese factory was expecting this to work.

G

i am no expert but i googled it.
as i understand, for the collector to scavange the right volume of gasses from each cylinder the pipes must be the same length to the collector.
i think if there is a big difference in pipe lengths the gas pressure in each pipe will vary due to temperature/expansion after combustion.
then the BERNOULLI effect of the collector will draw different volumes of gas from each pipe??
does that sound right??

I brought all this stuff up 4-5 pages back. Da Plane failed to understand. Then Da Plane attempted to explain fluid dynamics and even stuffed that up also. Then still wasn't able to tell us why these tuned length headers have different length primaries. Give up, he ain't listening or understanding. Chinese physics is different from normal physics. Non Chinese are too stupid to understand.

[markwid]

I brought all this stuff up 4-5 pages back. Da Plane failed to understand. Then Da Plane attempted to explain fluid dynamics and even stuffed that up also. Then still wasn't able to tell us why these tuned length headers have different length primaries. Give up, he ain't listening or understanding. Chinese physics is different from normal physics. Non Chinese are too stupid to understand.

I am Chinese and I don't understand.

Don't think Da Plane is chinese though! If he is, we collectively disown him right now, for being daft.

[project.r.racing]

I brought all this stuff up 4-5 pages back. Da Plane failed to understand. Then Da Plane attempted to explain fluid dynamics and even stuffed that up also. Then still wasn't able to tell us why these tuned length headers have different length primaries. Give up, he ain't listening or understanding. Chinese physics is different from normal physics. Non Chinese are too stupid to understand.

I am Chinese and I don't understand.

Don't think Da Plane is chinese though! If he is, we collectively disown him right now, for being daft.

Haven't you read any of the posted in this thread?

If he ain't Chinese, then he has alot of man love for them.

[sailaholic]

I am Chinese and I don't understand.

Don't think Da Plane is chinese though! If he is, we collectively disown him right now, for being daft.

golden! If only forums had a "Like" button.


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[Dupain]

Jacked up the car today to give my Spurt cat back exhaust a wipe down after the roadie. Had a look at where I think the leak is coming from the flexi part of the header but it looked fine. Really annoying. Will be fixing the leak and run the HKS header till rego expires next month. Want to see it's maximum potential before we put on the new header. Towed an Evo 7 with the current setup the other day.

Looked fine, no cracks or tears but you can hear the leak initially when pressing the accelerator.

[manga_blue]

Loving reading this thread. I haven't read it until now. Can't wait til he tries to put those things on and finds that the welds are all over the flanges where the nuts need to go.

[Dupain]

Booked in for Wednesday install.

[emily_mx5]

^wait so you aren't even going to install them yourself ?
Didn't you have a huge go at nearly all of us for not modifying our own cars... ?

[Regie]

^wait so you aren't even going to install them yourself ?
Didn't you have a huge go at nearly all of us for not modifying our own cars... ?

of course not, he couldn't put a steering wheel boss together

[booerns]

Don't be mean guys, it didn't even come with instructions... how was he meant to be able to figure out how something as complicated as a steering wheel works??

[Pamex]

Don't be mean guys, it didn't even come with instructions... how was he meant to be able to figure out how something as complicated as a steering wheel works??

Give him a break. Steering wheels have advanced a lot, you know. A Chinese man with his math trickery worked out that round was better than square and unfortunately they haven't updated the instructions to help with the round ones yet.

[KevGoat]

For entertainment...throw a flat bottom wheel in the mix...

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