Hi, Would a aftermarket Intake Manifold for a B18C5 work on my B18C?
I know a lot of B Series parts are Interchangeable. But I guess I just want to make sure. Thanks!

 

yes as long as it wasn't meant for the jdm b18c(GSR) b18cR it will fit fine.

 

Yeah my motor is the JDM b18c SiR-G....

 

no then it won't fit

 

The intake manifold bolt pattern of the GSR/SiR-G head are different than that of any other B series. I think you can re-drill an ITR manifold to work. But I'm not 100% on if that's true or if it's a good idea.

You can get an aftermarket manifold...but they're ugly and typically don't do much without supporting mods like cams, TB, and tuning at the very least.

A good aftermarket header is a good place to find power on the B series. Remember that I said GOOD aftermarket header.

 

The GSR head pattern is unique unto itself. The B16/B17/ITR head flanges are all the same

 

Yeah I bought a blox manifold that says it was for a "B16A, B18C and B18C5." So your saying that the aftermarket manifold will work still?

 

lol NO we've all said it won't you want a "GSR" specific one and yes the jdm gsr(b18c) is the same, get something better then blox tho.

 

Any JDM B18 VTEC engine is referred to as a "B18C". The manifold you have will fit a B18C Type R head. It will NOT fit a B18C blacktop (GSR/SiR-G)

More specifically and in other words, if you have GSR/SiR-G P72 head, the manifold you bought will NOT work. I'm sure it says somewhere on the part description if you bought it from a retailer that the manifold is NOT meant for the GSR/SiR-G head.

Why are you installing a manifold? Did your engine come without one?