Will usdm B18c1 aftermarket parts(intake, exhaust, turbos,etc.) fit a jdm B18c1. Also, will B18c1 aftermarket parts fit a B18c5.

 

I believe B18c1 usdm and jdm parts fits well

 

 

All B18C parts are interchangeable with the exception of the intake manifold. The bolt pattern for a B18C1 is different from a B18c5 or JDM B18C ITR engine. Also parts from the B16A Civic Si and the CTR (not certain about engine code) will also fit.

 

What about the exhaust manifold? Would you use a USDM GS-R bolt pattern or an ITR bolt pattern for the head... on a JDM B18C1?

 

The exhaust bolt pattern is the same on both. On a B18C1 I am going to use my head with the Skunk2 IM and port and polish both so they match up together correctly.

 

Nice! Thanks!
wait... do you mean the B18C1's are the same, or the B18C1 and the B18C5 are the same? I've been looking at the Type One 4-1 to pair up with my edelbrock intake.

 

most CAI's are not interchangeable between Type R (C5) IM and GS-R/SiR-G IM.

-Andrew