I swapped a b20 in my 91 civic, does anyone know where I can get a good adapter for cheap to connect it to my stock exhaust?

 

just go to a muffler shop and have them weld a new flange to bolt up to the b-series header.

 

why would you want to connect such small POWER RESTRICTING pipe behind a motor that you swapped in for more power? go look at a CRV and see how much bigger their exhaust diameter is!! your going to create WAY too much backpressure which is going to kill your top end! get a catback or have one made at a local muffler shop, make sure you get 2 1/4" diameter or larger. it's not as expensive as you'd think to have one made. with the high flow cat I had one done for less than $300, and that's INSTALLED!!! just don't leave the stock pencil sized exhaust if you have a b motor!!!!

 

well thanks for the input, I just needed a cheap adapter for temporary so I can drive the car without making everyone deaf around me, im saving up for a HKS s1 cat-back so thats why I just wanted something cheap.

 

what header do you have? it should just bolt up to your stock exhaust.

 

I got a OBX LS 4-2-1 header

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by loudandlow &raquo;</TD></TR><TR><TD CLASS="quote">why would you want to connect such small POWER RESTRICTING pipe behind a motor that you swapped in for more power? go look at a CRV and see how much bigger their exhaust diameter is!! your going to create WAY too much backpressure which is going to kill your top end! get a catback or have one made at a local muffler shop, make sure you get 2 1/4" diameter or larger. it's not as expensive as you'd think to have one made. with the high flow cat I had one done for less than $300, and that's INSTALLED!!! just don't leave the stock pencil sized exhaust if you have a b motor!!!! </TD></TR></TABLE> You make it sound like the world would end if he left the stock exhaust. BTW, top end is a relative subject when discussing a factory non-VTEC motor.

 

If you want something cheap, get an ebay header for a Del Sol VTEC, or a stock exhaust manifold/downpipe for a Del Sol VTEC. Either is a direct bolt-on. There is absolutely NO WAY to use a single cam manifold/header on a B20.


Modified by StorminMatt at 11:35 PM 11/11/2007