Hey guys, quick question. I have a set of 92-00 Civic Si/EX headers lying around, and I wanted to know if they will fit on my 90 CRX Si B16a1? The stock header on there now has 2 o2 sensors & this one only has one. I have a cat-conversion tho w/an o2 hole in it, so they are taken care of. Will it fit on there okay though, and can I use my stock header gasket or do I have to get a new one? If I have to get a new one, which car would I say it's for---92-00 Civic Si/EX or 89 Integra XSi?

Jonathan

 

no.


simple eh?

 

The bolt and port pattern are different from B series to D series motors. general rule, B and D series stuff don't mix n match.

 

Nope they won't fit, the bolt pattern is diffrent and the position of the header would be an issue anyways, it would rub the oil pan.

 

I know, you all think I'm a total idiot...but here's why I question it. The headers are said to fit 92-00 Civic EX/SI. I sell these everyday, mostly to new Si's....which have the b16. Now, I have had complaints that they dont fit a 96 EX and another saying it doesn't fit a 98 EX. I took the top flange and compared it to mine now...they look EXACTLY the same. The bolt patterns are the same (4 on top of the ports, 5 below), so I am thinking they might have F*ED up and put the wrong years on it. I know the D series wont fit the B series, but other than taking mine off, is there a way for sure I can tell? I attached pics below, tell me what u guys think.