Exhaust manifold


Mark572

New Member
Joined
Nov 20, 2018
Messages
9
Car(s)
Honda Civic ek4
Hi all could someone please tell me if there’s any difference in a B16 manifold and a B18?

Thanks in advance
 


Kipper

Well-Known Member
Joined
May 27, 2008
Messages
2,105
Hi all could someone please tell me if there’s any difference in a B16 manifold and a B18?

Thanks in advance
Both will fit physically, B18C/B16B JDM engines have a 2.5" outlet, B18C6 have a 2.25" outlet and B16's have a 2.0" or 2.25" outlet, Can't quite remember.
That's the only difference, I'd aim for at least a 2.25" but preferably a 2.5". You will need a different Cat/De-Cat for the 2.5" though.
 


rvm

admin
Staff member
Joined
Apr 15, 2006
Messages
10,599
Car(s)
EK9/Civic
Both will fit physically, B18C/B16B JDM engines have a 2.5" outlet, B18C6 have a 2.25" outlet and B16's have a 2.0" or 2.25" outlet, Can't quite remember.
That's the only difference, I'd aim for at least a 2.25" but preferably a 2.5". You will need a different Cat/De-Cat for the 2.5" though.
:bow:
 


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