I already searched but I could not find the answer to my question. I just bought a used motor from somebody, and he said it is a JDM SIR2. The block says B16A and the head is 93 PR3-3. I noticed dual valve springs on the intake side but single valve spring on the exhaust side. Is this normal for B16? Sorry if this is such a dumb question, I'm new to B world. This is my first B engine I work with. I only worked with H and F engines in the past. Thanks!

 

quick guide to making some distinctions.

92+ motors can be from either EG or DA differences are in the mount as well as in the fuel rail. but otherwise identical

http://tech.hybridgarage.com/tech/b16/

btw. yes all 5spd versions had dual intake springs and single on the exhaust. (other then b18c5/b16b)