head swap power?
 

how much would a si(a6) head help on a d15b2? Is the extra hp the d16a6 has mainly from it head?

Re:head swap power?
 

there is a little difference in the stroke between your d15 and the d16a6. most i've seen will sway a z6 or y8 head on to get vtec as well

Re:head swap power?
 

not enough power to actually do it man in my opinion. If I were you I would just throw a turbo on it. Me and my friend did a mini me swap on his a6 with a y8 a while back and we were pretty dissapointed. But now when we through a turbo on it different story. ;)

Re:head swap power?
 

yeah i do have a turbo setup on it, but over the winter i took the stock head off and I had a a6 head laying around so i cleaned it up and did a little port and polish on it and the manifolds. I just wanted to know if the head its self will give me any power gains? I heard the si cam is more aggressive.

Re:head swap power?
 

its the ecu and mpfi that will bump you closer to si specs. go mpfi and z6 or y8 head....theres your most power output for a stock d series configuration

Re:head swap power?
 

yeah i did the mpfi swap and have a si ecu pm6

Re:head swap power?
 

the 2 headsare the same the cams are different

Re:head swap power?
 

The heads are not the same.
but the A6 cam is more agressive.
and you will notice performance close to the D16.
(sohc 125bhp)

Re:head swap power?
 

I was going to do the same thing but it is cheaper to put in the si cam and get an adjustable cam gear thats what i did and i can notice a slight difference

Re:head swap power?
 

all the info i've read says they are (B2 vs. A6). some people say the A6 has stronger valve springs, but otherwise it's just a difference in cams. i just went and looked at the head on my B2 and A6, they're stamped PM3-10 and PM3-12, respectively... though the B2 is 2 years older than the A6.