new motor build?

96eg2 · Post by **96eg2** » Thu Jan 26, 2012 2:12 am

I just rebuilt my motor its a b16a je pistons .20 over with eagle h beam rods and arp head studs the compression is at 10.5:1. I also have a 4 to 1 header and a short ram intake on it. Ive been reading that what i have done now will increase the power with a tune is that true.

Phate · Post by **Phate** » Thu Jan 26, 2012 3:58 am

Which pistons? The b16a from J-land has 10.4:1 compression, so not looking at much of a increase really. Also, honda sells a oversized piston kit thats .5 mm larger than oe. So, really not looking at a crazy increase. You probably have a crappy header, so not much of a gain there either.

96eg2 · Post by **96eg2** » Thu Jan 26, 2012 4:18 am

http://realstreetperformance.com/store/ ... 2-372.html
thats the pistons and rods and the header is dc sport

JustRob · Post by **JustRob** » Thu Jan 26, 2012 5:43 am

You kept the compression ratio just about the same. It was 10.49:1, it's currently 10.48:1. The aftermarket intake and exhaust manifold may give you a bit of power but nothing that you're going to notice, even with a tune.

96eg2 · Post by **96eg2** » Thu Jan 26, 2012 6:41 am

I built it for the turbo i have how much boost can i run on that its my dd

Redline · Post by **Redline** » Thu Jan 26, 2012 6:43 am

U need some race cams and u will feel a diff. I have a b16a with skunk2 intake and cams and its not really that much faster than a regular b16 but i also need to tune

10 to 12 psi will be safe as a dd with a good tune.. DO NOT DRIVE IT TURBO WITHOUT A TUNE

96eg2 · Post by **96eg2** » Thu Jan 26, 2012 6:48 am

10 -12 psi can i do that when i boost it with out the head work

JustRob · Post by **JustRob** » Thu Jan 26, 2012 3:16 pm

You don't need any cylinder head work. You didn't even need to add forged internals for under 300 whp. I had a similar setup (Crower rods, JE pistons, ARP's) a few years ago that I drove daily with a 56mm T3/T4 turbo and 14.5 psi. I wouldn't do anything less then that.

5thgen · Post by **5thgen** » Thu Jan 26, 2012 8:43 pm

96eg2;284999 wrote:10 -12 psi can i do that when i boost it with out the head work

Depends on the turbo, the fuel, the hotspots in the combustion chamber (did you knock the edges down?), etc.

You'll just have to get on a dyno and see how much pressure and/or timing you can run before you detonate.