i need a new exhaust manifold for my b16 and i was gonna buy a header instead.
my problem is that i cant find any for a b16 i found a few on ebay but im not sure if theyll fit on my crx.
so my question is will this header fit on my b16a crx?
http://cgi.ebay.com/ebaymotors/Integ...ht_2834wt_1080
please help.

 

Thats pretty cheap, but will fit your car.

Are you running OBD1? That header is designed to run a single heated 4 wire o2 sensor, located way at the back of the header near the cat.

If you are still running obd0, Hasport makes a header with two single wire non heater o2 sensors are needed

 

im running obd0 at least i think i got two single wire o2 sensors

do you think i could make them work.

 

either find a 1st gen b16 oem manifold, of get the Hasport one as mentioned. There are some old school aftermarket headers out there, but they are few and far between, and pricey

or, you could do an obdI conversion

 

i could just cut another hole in the new header and weld some threads for the other o2 sensor

 

as explained already, obdo has NON heated o2 sensors. You would have to get TWO new holes drilled with bungs right near the beginning of the header in the primaries to make them work right, as they work off the heat of your exhaust. It was kind of a non efficient setup, that's why Honda stopped doing it that way.

It will cost you more to modify it, than the cost of the header, lol Also, keep in mind the header will look good, but won't make any more power than the stock exhaust manifold

 

where would i get nuts that i could weld on that would be the right size to thread the o2 sensors in (what size are they)?

 

Here you go
http://vibrantperformance.com/catalo...Path=1022_1069

 

theyre 18x1.5 i discovered and i can buy them from a store a mile away for 51 cents so ill just do that