help with build

ASSISTANCE Forced Induction
1

I currently have these parts already, and need to know if it’s safe to build. I have no money and can’t buy anything else but what I already have.

B16 head with B18C5 valve springs and retainers, Ferarra Valves.
B18A1 Block, PR4 Rods, PR73 A0 USDM .040 overbore pistons. arp rod bolts.

This nets me from 11:1-12:1 compression ratio.

I already have a turbo kit, and dsm 550 injectors, I have a 91 which means they’ll fit right in. Is it safe to turbo this motor?

I also have skunk2 valve springs and ti retainers, and Jun 3 cams. Would there be any advantage in switching the springs from my 10k B18C5 springs for an engine that will only be revving to maybe 8500. Also would Jun 3 cams be good for a turbo, or will I make plenty of power with Jun 3 cams without a turbo, or should I turbo and ditch the cams.

right now I’m back to just a stock LS motor but it’s summer, and no one will buy my parts for a good price so I figured I’d use them.

2

with that compression ratio and the Jun3 cams, you’ll be better off leaving it NA instead of boosting.

of course, with the .040 overbore pistons, you’ll need the block machined to accept them.

either lower compression by getting new pistons and rods, or stay NA. those are your only realistic options with the components you have listed above.

3

I already have everything built, I just decided a B18A1 was a better daily driver than an LS/VTEC =/, but I want to go fast again

4

well, toss that engine in and get it tuned by a respectable tuner and you’ll be smiling. :slight_smile:

just don’t boost it as is or you’ll definitely NOT be smiling when the oil pools up under the car from throwing a rod. :wink:

5

Boost the stock LS and save the other one for some N/A fun.

MantisX

6

.040 over thats 82mm right ? well that leaves no sleeve left for the stock block boost will only crack a sleeve .maybe 6-8 psi on a small turbo will last.

7

or u can put in some oe cams and a thicker head gasket.we did it on my friends type r high compression boost=fun.but like they said the big ass bore will not allow u to run alot of boost.id say keep it round 325 wheel ull be fine.