i have a 93 civic lx with a d15b7/5 speed tranny. What i want to do is swap head to 1.6 vtec and rebuild entire motor with new cam and run boost and maybe sum nos. right now i have the turbo kit and engine rebuild kit. So my question is what head do i need to get for swap, forged or regular pistons, and what kind of cam should i put in.

 

Someone said it on here before; It'g going to be hard to run boost and nitrous together. Maybe if you get a good tune, I'm not sure.

 

some a1 pistons will put you at a sweet 12:1 compression ratio.

 

Think you got the wrong thread there. He's turbocharging, and A1 pistsons in a D15 yield a static compression ratio of about 10.5:1 (D16 = 12:1).

For just the a turbo set up OEM cast pistons/rods will get you to about 200-250whp safely. Above that you'll need forged both. I'm not a fan of nitrous so I wouldn't know what to tell you about that. For the head, the D16Z6 is easiest to use and it works well. For the cam maybe contact Akmee.

 

if i get a z6 head what will need to be done the ecu, and can i run 8 pounds of boost on stock pistons.

 

idk about on a d15 but on a d16y8 you can run 7-8 psi safely no more than that though. and i have never seen it but someone was talking about spraying the nitrous straight into the turbo idk if you can do that or not though. if you boost i wouldnt spray

 

aren't b7 rods whimpy?

 

Yeah....I was told by many on here, that b7 rods can maybe handle 5lbs. The other option is to have them shotpeened.

 

mmm you're right...damn i used to know a sweet setup that you could use with a b7 block/head with another set ofp istions that would yield a 12:1 compression ratio...but i cant remember it now. i coulda swore it was the a1's...

 

could it be vitaras?