Can anyone tell me the head, and then possibly the specific motor swapped into my EM1? Ive been doing a lot of searching and getting a lot of mixed results. The block is a B16a, and the code to the right of the exh. mani is PR3-1
then theres these codes and i supposed they tell you a lot about the year/model the head was made for. I'd love if it belonged to an SIR-II, but i doubt thats the case.



The number to the far left i guess is important... and idk what the other symbol (next to the '8' is), so if anyone can tell me, that'd be great! thanks!

 

 

looks like an 89 pr3

 

Yep, first gen B16A, IE the least desirable one.

 

There is an advantage to the 1st gen a lot of people don't know about. Because it was Honda's first real go at vtec, they spent more $$ making it and spent a lot more love and car building the heads. They have a much cleaner cast than the later models, and it's rumoured that they are stronger too due to the composition of the metal.

Later heads were still good, but Honda cutback on the mfg process, that's why they are a little bit rougher under the valve cover.

1st gen are less popular because they came with weaker milder cams than newer models, but that can easily be changed up

 

Good to know! makes me feel better, hah. But yeah the car has CTR cams in it, so that should make up for the factory ones. That being said, the rest of the motor should have the 10.2:1 compression pistons, 8200 rpm rev limit, etc etc?