Hello everyone and welcome to this week's video today, I'm gonna be explaining exhaust headers
Hello everyone and welcome to this week's video today, I'm gonna be explaining exhaust headers

and uh exhaust headers are basically one more step if you are working on getting a full new exhaust with larger diameter of piping throughout it
and uh exhaust headers are basically one more step if you are working on getting a full new exhaust with larger diameter of piping throughout it

So if you haven't yet watched my video on cat back exhaust or my video on how to increase horse power via the exhaust should probably check out those first,
So if you haven't yet watched my video on cat back exhaust or my video on how to increase horse power via the exhaust should probably check out those first,

i'll include links in the description
i'll include links in the description

Now this particular exhaust header is a Yonaka header for Acura Integra
Now this particular exhaust header is a Yonaka header for Acura Integra

b-series engines and so I'm just gonna be kind of going over this and how these
b-series engines and so I'm just gonna be kind of going over this and how these

are used to increase horsepower
are used to increase horsepower

so the exhaust header is the first piping after the exhaust from the engine
so the exhaust header is the first piping after the exhaust from the engine

exits through the cylinder head and starts to leave out of the car,
exits through the cylinder head and starts to leave out of the car,

so the purpose of a performance exhaust header is clearly to increase horsepower
so the purpose of a performance exhaust header is clearly to increase horsepower

Now it does this with two main ways:
Now it does this with two main ways:

first of all, it's going to have larger piping so for example with this Yonaka
first of all, it's going to have larger piping so for example with this Yonaka

header it's going to have one in five eighths piping for
header it's going to have one in five eighths piping for

the primary pipes coming out and then it is also going to have a 2.5 inch
the primary pipes coming out and then it is also going to have a 2.5 inch

collector, the collector is where all of the individual types join together and
collector, the collector is where all of the individual types join together and

then go out to the exhaust as one throughout the rest of the system.
then go out to the exhaust as one throughout the rest of the system.

So, the other thing this does is it supports scavenging, so the longer these long
So, the other thing this does is it supports scavenging, so the longer these long

tubes support exhaust scavenging so if you've watched my video on how exhaust
tubes support exhaust scavenging so if you've watched my video on how exhaust

can be used to increase horsepower
can be used to increase horsepower

you should be able to understand that as far as how scavenging is done in
you should be able to understand that as far as how scavenging is done in

order to increase horsepower.
order to increase horsepower.

So one of the things that's common with after market exhausts, especially
So one of the things that's common with after market exhausts, especially

in the Honda Acura Japanese market world where we've got four cylinder engines is
in the Honda Acura Japanese market world where we've got four cylinder engines is

a four-to-one header or a 4-to-2-to-1 header and basically all that is is describing
a four-to-one header or a 4-to-2-to-1 header and basically all that is is describing

how the piping joints together and finally forms into one
how the piping joints together and finally forms into one

so the 4-to-1 you take all four and then they just go to one just like the name
so the 4-to-1 you take all four and then they just go to one just like the name

is when the 4-to-2-to-1 two of the pipes joined together and then finally the only
is when the 4-to-2-to-1 two of the pipes joined together and then finally the only

after that so little difference and I look at some dyno charts online just
after that so little difference and I look at some dyno charts online just

kind of see some main differences here and it doesn't look like there's a huge
kind of see some main differences here and it doesn't look like there's a huge

main difference but the powerband shifted a little bit hotter with the 4-to-1
main difference but the powerband shifted a little bit hotter with the 4-to-1

rather than the 4-to-2-to-1
rather than the 4-to-2-to-1

so this is a very exaggerated curve here, but basically you have torque on one side
so this is a very exaggerated curve here, but basically you have torque on one side

and RPM on the other the 4-to-2-to-1 header is going to kind of have its peak torque
and RPM on the other the 4-to-2-to-1 header is going to kind of have its peak torque

a little bit lower rpm than the 4-to-1 header and once again at the
a little bit lower rpm than the 4-to-1 header and once again at the

graphs I looked at online it didn't seem to be a huge difference so it's not
graphs I looked at online it didn't seem to be a huge difference so it's not

anything major like I've shown here and then both of them seem to have a decent
anything major like I've shown here and then both of them seem to have a decent

advantage over the stock if you did have an engine with a significant amount of
advantage over the stock if you did have an engine with a significant amount of

power. So of course with these kind of things with the larger piping you're
power. So of course with these kind of things with the larger piping you're

going to want to match it to your horsepower so it's not necessarily if
going to want to match it to your horsepower so it's not necessarily if

you have very little force arranging getting larger header may not be
you have very little force arranging getting larger header may not be

beneficial and I kind of go more into this in my video on catbacks that's kind
beneficial and I kind of go more into this in my video on catbacks that's kind

of why I reference checking that out, but Yonaka says the header that they
of why I reference checking that out, but Yonaka says the header that they

supply is good for about five to 10 horsepower on the stock engines and of
supply is good for about five to 10 horsepower on the stock engines and of

course that's more effective if you have a more powerful engine.
course that's more effective if you have a more powerful engine.

One of the things with these pipes is the large you create these individual
One of the things with these pipes is the large you create these individual

pipes and larger the collector is your kind of shifting where the peak torque
pipes and larger the collector is your kind of shifting where the peak torque

is going to occur to a higher rpm so larger piping you're going to have a
is going to occur to a higher rpm so larger piping you're going to have a

better flow at higher rpm when you've got a lot more flow so it'll kind of
better flow at higher rpm when you've got a lot more flow so it'll kind of

shift that torque that peak torque up into the
shift that torque that peak torque up into the

higher rpms. Some of the challenges involved with an exhaust header,
higher rpms. Some of the challenges involved with an exhaust header,

especially one with longer length pipes is that the install can be kind of a
especially one with longer length pipes is that the install can be kind of a

little more complicated
little more complicated

where you may have to remove some components, move components and also
where you may have to remove some components, move components and also

weld the end on to the catalytic converter or the rest of the exhaust
weld the end on to the catalytic converter or the rest of the exhaust

that you've got going on
that you've got going on

also you can run into clearance issues especially with lower cars as this
also you can run into clearance issues especially with lower cars as this

exhausted or maybe the lowest part in your car and so if that's the case you
exhausted or maybe the lowest part in your car and so if that's the case you

want to make sure that's kind of protected or that it's not really that
want to make sure that's kind of protected or that it's not really that

low for the area that you're driving in
low for the area that you're driving in

so just taking a look at this Yonaka header, this is a stainless steel header
so just taking a look at this Yonaka header, this is a stainless steel header

and you can see the one and five-eighths inch piping heading down and that all
and you can see the one and five-eighths inch piping heading down and that all

means up to a collector and then at that collector you've got a 2.5 inch piping
means up to a collector and then at that collector you've got a 2.5 inch piping

and that's the outer diameter so the inner diameter is actually little bit
and that's the outer diameter so the inner diameter is actually little bit

smaller and then here is where you can i install the o2 sensor.
smaller and then here is where you can i install the o2 sensor.

I can just place that right in there.
I can just place that right in there.

So, thanks for watching if you have any
So, thanks for watching if you have any

questions or comments feel free to leave them below and I will include a product
questions or comments feel free to leave them below and I will include a product

include a product link in the descrition
include a product link in the descrition