SO I get this swap out of a hatch I bought. 99 Si with 40k on it. Awesome motor, and then I swap it into my coupe and sell the hatch. Here is the question?? I go to buy a new exhaust mani gasket, and when I get there.. I tell him it's for 99 Si motor. he gives me the gasket and sends me on my way. Well it DOES NOT fit.. so I am like hmmmm... SO I go back, and get a GSR gasket and it fits.

The head is stamped PR3-3 so which head do I have???

 

b16

GSR is p72

 

so how come the b16 manifold wont fit? My buddy just bought a mani for b16 and it doesn't fit as well. I am just a litte confused...so any help would be great.

Thanks

 

up

 

b16a2 head would be p2t or pr3 more likely pr3
b18c head should be p72 the parts guy might have his part numbers off.

go back and ask him does he have one for the delsol twin cam. then match it up to yours

 

well my boy checked his Si motor...and his is pr3-2 and mine is pr3-3, and they are same year motors??

Parts are for b16..and do not fit...at all!! All GSR parts fit though???

 

the b-series exhaust manifolds gaskets are the same gsr/si/type-r etc.

that is why a header is sold fitting multiple motors.

the guy probably gave you one for a single cam motor