I dropped a '98 gsr motor in a '98 civic coupe. The b-series header/exhaust manifold doesn't fit/line up with the fatory civic cat exhaust. For one thing, it's about 3 inches too short and also the line up is offset by about 2.5 inches. what do i need to do?


Modified by phu at 11:09 PM 12/1/2005

 

d series header wont fit on a b series motor, just go to the muffler shop and let them extend the pipe and connect it

 

someone correct me if im wrong but im pretty sure you can get a gsr exhaust and you should be good. but a d series header wont fit. gsr manifolds are shorter than ls manifolds, thats why gsr exhausts wont fit an ls without modifications in fitment.

 

you can run an LS header if you want to stay oem. or just have an exhaust shop make you an extension.

 

just get yourself a LS, B16, or Type R factory manifold and your golden. Or do like the other guys on here say and go to the muffler shop.

 

go to a muffler shop and ask them to put on a sleeve.

 

Long story short, (shorter header is a gsr) the long header in the pic is the one that was on the engine but has a hole about the size of a quarter when my piston/rod pushed through the block and put a hole in it. apparently that header fit perfectly. perfect length, pefect line up. don't know the name brand or year, the guy before had it on the engine, can't locate the guy. I would like to buy that header for a perfect fit instead of going through all the trouble of the muffler shop. But here are some pics of the problem. and also thanks for all the help so far.




This is actually a '98 type r header from my friend which is on the car right now.




Modified by phu at 6:33 PM 12/1/2005

 

i had the same problem with my ls swap in a 99 ex i got a muffler shop to weld it for me, i also tried an si header didnt fit either too long that time

 

take it to meineke...or exhaust shop...just did a itr in a 97 coupe...and don't use a d series header...**** will go on

 

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The longer header from the pic actually will give you a perfect fit and alignment. I'v very curious as of what year it was from. If figured out, probably will save a lot of time and money for those puting b-series in eks.