wtk: exhaust pipe size

[Kinday]

Talk about old post resurrection

For the SOHC F20B...you won't find alot of options outside of the Kamikaze and Bisimoto to name a few. If you can afford it...go bisimoto...if not you can always find a Fujitsubo lurking aound the bamboo somewhere.

[tallman701]

bitsimoto would cost me around what? and how much horses can i gain from that, also would it make sense to change the head to a h22 dohc

[Kinday]

Bisimoto is a high end header. He specializes in F series parts...after all he has a 9 second SOHC F series engine....and thats all motor power. The price is near $1000 USD. Your choice (but it makes power dependent on you engine mods)

http://bisimoto.net/store/index.php?mai ... =3_8_77_81

The H22 head flows awesomely well....much better than the SOHC F. If you can put one on do it, but essentially you'll be creating a lower compression H22 on that block. That's when boost looks great...SOHC F series LOVE boost.

You should probably look into going turbo rather than trying the all motor route if you're looking for more power

[crazybalhead]

2 1/2" crush bends can work too.

[r3iXmann]

you mean mandrel bends? ^

[crazybalhead]

NO BOY. I know what I typed.

[r3iXmann]

who you calling boy?


why crush bends? mandrel bends flow better

[honda hoe]

man geh loud up yes

*awaits buss head*

[crazybalhead]

Reixmann, what ah meant was, that it is cheaper and easier to get a crush bent pipe made up. And to compensate for the poorer flow, a slightly larger diameter is better.

Hence the 2 1/2" crush bend. Scene???

[dragaholic]

Reixmann, what ah meant was, that it is cheaper and easier to get a crush bent pipe made up. And to compensate for the poorer flow, a slightly larger diameter is better.

Hence the 2 1/2" crush bend. Scene???

I 2nd this option. De man know what he talking bout

[Kinday]

2.5 non mandrel will work great too

[exia_sir]

2.5" ....thats what i went with n it sounds great

[X2]

2.5" crush bend is fine for your proposed setup. 2.5" mandel is a bit much for a b16 with light mods. Someone mentioned backpressure... that term always thrown around incorrectly. The exhaust pressure and velocity gets fubar when you go too big... particularly on a b16. A regular ITR header and 2.5" crush bent exhaust won't be too bad for the money you will spend.

Headers the likes of a Bisi, T1R, Comptech are typically not worth the investment unless you don't have too many parts to replace... they also typically need some form of re-tuning to get a clean a/f ratio to make the power claims. As mentioned, don't waste the money on a new DC header... the quality has gone down from years ago.

Weapon R is a decent go between !

[mannh01]

Guys, firstly what is the stock size pipe that the b16a carries, not sure? You see when I looked at at my exhaust pipe, the size was looking like 2 3/8" (STRANGE), its stock never interfered with it, never changed it either. In my opinion, the 2 1/2" will work better, but a better flow will definately come from something with a bigger bore and less bends and less restrictions.

[Kinday]

I'm absolutely sure that exhaust you got isn't stock IF the size is 2 3/8". That's the size that most Japanese aftermarket catback systems carry. Honda never ran that size pipe on the SiR.

[mossman]

2.5" works well, got it on a eg9, its a totally big difference, gives the mid range power! cost me only $800

u paid this to change the entire exhaust system? where did you go to do that?

[jc]

will the 2 1/4" work for a slightly modded B18c1, ie. 4-2-1 headers, intake, type R or skunk 2 stage 1 cams and ecu