Car is a 97 Honda Civic EX with a B18B1 non-vtec, converted to obd1 with a virgin P75 ECU. Supposedly has a 99-00 Si transmission, but I have not confirmed this yet. It's mostly stock besides an intake and exhaust.

Rings in the current motor are shot, with 135 psi on all cylinders. Probably due to it being previously boosted.

I've decided to drop a new motor in it, but I figured since I will be rebuilding the motor to make sure it's reliable, I might as well throw some nitrous on it.

The new motor will also be a B18B1 non-vtec, just to keep things on the cheap side.

Haven't got a complete game plan together yet, but here's what I have so far:

-Forged rods and pistons (brand undecided)
-ARP bottom end bolts
-Balanced crank
-Cylinder hone/possible bore
-Built head
-Stage 1 clutch
-Lightened flywheel
-CTR crank pulley
-75 shot nitrous kit (brand undecided)
-Also considering getting higher compression pistons.

Don't really have any specific horsepower goals in mind yet.

Not exactly sure how/where I will be getting it tuned at yet either.

Any suggestions would be much appreciated!

 

These are two questions that you need to figure out first, before anyone can help.

You may not even need Forged internals pending on answer to #1.

Im not a fan of nitrous without proper management. S300 would work well, it has nitrous control.

 

Yeah get a dry system, larger injectors and fuel pump have the S300 tuned to control both the spray and the fuel. That is the safest way to run spray. It needs to be tuned just like a turbo does and IMO after spending all the money to do a nos kit the right way you can do a turbo kit for close to the same cost and not have to go and fill up bottles after 3-4 times of using the go fast gas. JMO.

 

skip the arp main studs. i would just run new oem main bolts.

i would also skip the ctr pulley, there's just too many bad experiences with it that i wouldn't feel safe using it.

if you're gonna stick to nitrous, might as well go high comp with it.

 

Yeah the S300 was what I had in mind, and this is my daily so I need to keep it reliable to get to work and school. So I'd say a ballpark of 200-250? Nothing too crazy, just enough to give some of these muscle car guys around here a run for their money
Well I won't be using the nitrous all that much, just on special occasions. I'm trying to keep my car reliable since it's my daily, so I really don't want to have to mess with all the turbo BS every other day.

How high compression do you think? I'm thinking either 10.5:1 or 11:1, with a either 75 or 100 shot. And as far as the ARP main studs go, while I have the motor apart I figured I might as well make it as strong as possible so I don't have to go back and redo anything.

 

This will be a gradual build, so I'm going to be sure to double check and triple check everything. I will be rebuilding the second motor over the winter and swap it in when it's all finished.

I'm undecided as far as wet/dry shot goes. I've been told a dry shot is safer, but since I will have forged internals will it really matter?

 

arp mains require line honing the block, which in turn changes the centerline for your oil pump. just something to note. there are 700+hp cars on oem main bolts. you'll be fine.

going 11.5:1 will definitely require cams, as oem ones are not gonna like that one bit.

 

Ah I was not aware of that, guess I'll cross the ARP's off my list haha.

And I was planning on doing some headwork, but keeping it mild. I didn't realize stock compression for the B1 was 9.2:1, maybe I will just bump it up to 10:1, or 10.5:1. How much modification would that require?

 

How does having a turbo require messing with it every day?? If that is the case it was done wrong. If done right a B series can easily push 250-300whp all day long on stock internals reliably and will still get great gas mileage off boost and be very streetable. After you get your nitrous kit, increase compression, do head work and larger cams you have spent way more money and will end up with less whp and way less tq than a turbo kit. It will cost you around $1500 alone to have a spray kit installed with all the needed extras like remote opener and bottler warmer. $2000-$3000 will get you a killer turbo set up that can make 250-350whp on the stock motor. JMO

 

I hate when people say this. It shows their ignorance.

 

No it shows that I dont proof read before posting.

 

There's so many boosted Civics these days it just seems almost normal to me. I want to do something somewhat new to my area. I know of one person within 50 miles of me with nitrous on a Honda. Maybe I will end up going with boost eventually, who knows. But for right now my plan is nitrous. If you don't like it then don't post on my thread. I'm looking for nitrous feedback, not why turbos are better than nitrous..

 

I would definatly go S300 so that solves that....250 is realistic but would prob take a 75 shot to get there im thinking.

Its not hard to set-up the nitrous kit at all since its just a dry shot. wiring a relay into the solenoids and to the ecu. BAsic for the most part. Your tuner shouldnt charge much for that if you arent comfortable doing it

Also dont even bother doing head work on a B18. SEriously for the moeny just get a used Vtec head and the Vtec conversion kit. YOu wil be much happier and wil provide greater bang for the buck..

Id stay away from forged internals with that power goal. If you want to stay cheap look into some B -series Vtec pistons they can be had cheap (you will want higher compression with the Vtec head, Get some used OEM pistons. Check the compression calculator to decide what compression you will get)Get some new rings as well

For the cost of Forged pistons/rods and head work on the b18... you can get a Vtec head, pistons & rings (OEM) and the Vtec conversion kit...

If you cant decide on nitrous or turbo then get both...its what i did haha ALthough its a little impractical

 

My Ls Vtec motor is not low compression and I did not swap pistons. B18B1 block, B16 head milled at least once (by me) just to clean it up, OEM head gasket CR is about 10:1.