B16a in 91 civic hatch

So far i have spec b toda camshafts
Toda cam gears
toda valve springs
skunk2 retainers
head might b p&p havent decided yet
toda headers
skunk2 ultra im
68mm tb
Tanabe medallion exhausT
P28 ecu chipped s300....

These parts r not installed yet im still debating on gettn pistons or not right now im lookn at WISECO pistons with EALGE rods there are different bore sizes from 81mm - 85.50mm n idk which to pick im still a newby at builds... the cr: 8.84:1, stroke: 77.4mm, and rod length: 134.3mm

I want to make tons of hp but still keep it street legal n dd any advice would b great thanks!!!

 

81.5mm and around 12.5:1 compression would be ideal IMO. What fuel do you plan on using?

 

Right. you can't go above 81.5mm safely anyway, so stick with either 81mm or 81.5mm. The power level will not change just on a .020" overbore. You'll be fine with either size

 

Would it make a big diffenrence if i just kept the block stock?

 

What fuel do ya recommend?

 

Yes. Increased compression from replacement pistons will absolutely help with not only the build overall, but the camshafts specifically. Those camshafts do not work to even close to their potential with a stock block

93 Octane or better. Ethanol has some advantages, but some disadvantages too, depending upon the purpose and use of the car.

 

I have vowed to NEVER use pump E85. EVER. Too inconsistent....well just to scratch the surface. /rant

I personally think there are better cam choices for this motor, but if he has them...might as well try to use them the best he can. Might get some peak out of the B's

 

What cams do u have n mind?

 

Ok so i cose the bore 81.5mm n the highest cr i gave me was 11.01:1is this ok?

 

And for the acl bearings do i just get std size? They also have .25mm n .025mm

 

i would absolutely recommend a c/r higher than 11.1, especially with those cams. if it were me i would go with around 12:1, even 12.5:1, no higher than that on 93 octane though. but with 11.1 you definitely will not be reaching your full potential with those cams.

 

also your exhaust may be a tad small. if you already have it, than try it. otherwise i would go with a full 2.5 inch exhaust.

 

FTFY

 

Haha I knew SLEEPER would do that. 3inch for the win

 

Exactly on the E85.. Hell, I just won't run it at all. If I have to get a drum of fuel I'm either getting actual race fuel or make my own with Methanol or Toluene.

As for peak power with Spec B's..... Nah... Toda Bs weren't made for Peak power. That's more of the Toda C's. But he'll get better midrange and torque throughout the entire rpm band than some chumpy peak power number at the last 1000rpms from some dyno.

That's exactly why switched from my Buddy Club IVs to the Toda Bs..