triniSiR

Ok Here goes. I have a JMD Civic SiR with a b16a. I believe it is the Second generation b16a. The internals a stock, compression ratio, according do my research is 10.4:1. I am on my way gathering the parts I need for boosting up. I have so far:

Rc 370cc inj.
MSD blaster coil and cap.
Magnacore wires.
Emanage Blue (yes I know many guys hate it but thats what I got).
Garret t3/t4 .48 .50
Cast iron mani. (have to keep AC and PS in this heat)

My concern is this. I may have to rebuild my engine soon, so I thought to myself well since I have a pretty cool direct port nitrouse system already, and I am looking to turbocharge I will go with forged internals (obviouse right), 9:1 compression I thought. But then again it is a daily driver in the city, with traffic, with low comp. pistons the car is going to be dead at low revs , and I like the quick response from my stock pistons.... So then I thought forged pistons and rods but with a close to stock compression, since I have read many times on forums that 7-8psi is safe with that comp., but the nitrouse system can't go to waste, I've said to myself.

I have used a 80 shot with no problems so far, I shot 120 already but will not do it again...trust me... I was looking at some SRP pistons with many choices of compression ratios, so...here finally comes the question....If my stock comp. is 10.4:1 could I use like a 10.1:1 or 10.0.1 or even a 9.9:1 compression to try and keep the response of the stock comp. around town, and have 7-8psi boost and the occational 50 shot nitrouse when needed, safely? Or am I asking for too much?In the sense that I want it all... I know I will need: block guard,walbro 255, new bearings slim fans etc. Oh do I really need to change my oil pump,As suggested on some guides?

Sorry for the long post guys...just wanted to give you all the full picture. Thanks.

Turbo-charged

you would be surprized how responsive a built motor is, even when the compression is a little lower. driving cars with built motors all day every day, when i get in a car with a stock motor it drives me crazy how unresponsive it is.

triniSiR

Ok 9.9:1 ratio pistons then?? Good response at low revs for everyday, city traffic use you'd say

slowsol95

i'd upgrade those injectors to at least 440's

notoriousB

you won't notice a ton of difference dropping from 10.4:1 to 9:1. the boost will more than make up for it.

wicked2night

Do i understand your intentions correctly, you want to boost 7-8 psi and add 50 shot on top of that while using blue box for engine managment?

If that is right, don't waste your time over details such as 0.5 point of compression, engine managment and tunning will solve all your problems. You must have at least some decent tuners in Spain so pay them the money they want or you'll be rebuilding your motor more than you would like to.