what do you guys who have turbo think is a safe boost pressure for a stock first gen b16 or maybe i should just buy something else like nos.

 

the general opinion is 6psi, maybe 8 if its tuned half decent.
Stick with 6psi and you prolly wont blow it.

 

I know a few people who run 8 right off the bat, 11 or so tuned....

Then again, they are tinkering with needing an engine re-build most likely.... I'd keep it @ 8 or so.....

 

Don't waste your time and money putting turbo on a stock motor because it will blow up if you race eventually. Do it the proper way the first time. Bolt on turbo kits make no sense. Poeple say well it's only 6psi... Boost is Boost is Boost and stock Honda motors don't take kindly to any boost. You spend $3,500 on a kit and then it blows your motor and you either take the boost off or build it up like you should have the first time. If you are going to do it at least get forged pistons/rods (forged) and change the bearings and get tuning by (JS safeguard/Hondata/rc injectors) and be sure it's intercooled.


[Modified by slowinslc, 6:28 PM 12/6/2001]

 

No tnecessarily true dude...

I agree 100% about people just slapping a kit on and thats all, I'm a true believer in building the damn engine up and THEN putting FI on it, but you CAN safely turbo a stock engine (however stupid it sounds) with minimal boost..

Like I said 8lbs of boost is safe on a stock b16 as long as it's getting enough fuel...

 

I'd have to agree that the stock Honda engine can live a long healthy life at moderate boost. If you keep the fuel on th rich side, or at least tuned properly <avaiding detonation and high EGT's> hte engine is of a stong enough build <not strong parts, mind you, just high quality> that at 8 PSI, the car could make about 240 - 260 HP at the crank and live a VERY happy life.

Keep your hands off the boost controllers tho, when you start to lose!

 

i say, spend that money u gonna spend on the turbo and jus build an all out n/a motor... u knoe, pistons, cams, manifolds... ect ect... i dunno but i like all motor better... turbo and nos is for people who cant keep up...

 

Once again, not exactly true...

All motor kicks ***, don't get me wrong. Hell, my original plan was to make the rex a 12sec full interior all motor animal....

But then reality hit me....

Turbo is much more cost efficient, and if done right, is just AS, if not MORE reliable...

Turbo is not for people who can't keep up.... certain people like FI, others don't.... turbo and SC is a bad *** way of adding power, much respect for a built turbo Honda or SC...

But I agree, N2O is the cheap way out, unless your car runs 13s OFF the bottle...

 

my friends may we have a hand for Phatwhippin_CRX he knows his **** and i agree a built turbo engine can handle more psi and thus make more hp this is true but a stock Honda engine can handle boost if tuned right i know this because ive seen a gsr motot (stock) take 11 or 12 psi of boost and run 11.80s in a 97 civic coupe on slicks this guy knows his **** and he tuned it good if u know wut ur doin a stock motor will take to boost if ur worried about it blowing from abuse dont abuse it 6 psi is totaly safe as long as fuel is supplied and tuned correctly u can do it if not people wouldnt do it and more people wouldnt run turbos on stock engines the na setup is way harder to acheive the numbers of a fi motor it just isnt as efficient way of making power in order to make the na b16 run the times of a fi b16 it will take alot more work its just the way it is na is nice if u can do it but then ur talking crvtec it would be a better way to go about goin NA but thats another subject (phatty eh)

 

I am in the proces of adding a turbo onto a stock B16

This is the setup I have in mind:

IHI B859 turbo charger running 6-8 psi
Intercooler
Blow-off valve
310 cc Prelude VTEC injectors
Air-fuel sensor
Reprogrammed OBD0 JDM SiR ECU with knock sensor

Actually I already have everything but the ECU and sensors (sweet deal on the turbo )

At the moment I am in the progress of gathering as much information as possible about how much boost the stock B16 can handle and what setup would be best to make this engine last for a while (and I don't mean forever!). I'm not afraid the engine will blow with the amount of boost I want to have but I want to be sure the setup is "safe" and drivable ..I don't like standing next to the road with a stalled engine in the middle of the night......

Interesting site :

http://members.tripod.com/turbohonda0/main-page.htm

 

Hell, considering you're using an intercooled setup, you could easily bump it up to 10 or so.... without stressing the engine too much...

 

Is it possible to turbo a stock engine with moderate boost? Yes.. Is it probable that most people who want to "GO TURBO" can tune their cars or even choose a shop that can tune for that matter? No... When I hear people say 8psi is safe as long as you have enough fuel I think to myself "How in the hell do most people know if they are always getting enough fuel"? I know of a few people who have blown their cars up because they didn't get the car on a dyno and use a wideband O2. Alot of people just use a damn Autometer A/F guage and figure they are safe when in fact they just turn their fuel pressure super high and max their stock injectors out or break them in the process.

I will agree with you that if you have some experience and know exactly what you are doing it is possible to safely boost 8-10psi. Alot of people go out and buy a kit and throw it on their car thinking it's ok because it's low boost. I just want the guy who started this post to be careful. Just because it's possible doesn't mean that it's easy to do.

Any direction you turn there are challenges. There are different schools of thought on each but here are mine.


Turbo: Highest overall car maintinance, Highest power producer, most expensive.
N/A: Bragging rights, as expenisve and sometimes more than boost, more reliable, will wear your motor out quickly due to high rpm.
NOS: CHEAP, CHEAP, CHEAP, Your car will not last long with over 75hp shot. Very hard on bearings bottom end. Hard to tune.
Supercharger: Cheapest boost, good street runner, semi-hard to tune, With JRSC you can't boost more than 8-10 psi without the air charge heating up to much. Not a problem with Vortech aftercooler.

Anyway I love them all in their own way but remember a car is a system and one change will effect the rest of the car. Be careful

 

Hell I'm 200% pro-natural aspirated but I don't have the time or the money to build such an engine. I also don't have 3-4 K lying around for a JRSC and waterinjection. I bought this Turbo-kit for the ridiculous price of 600$ (new 5x times as much) with factory warranty on the turbo..

It's not like I want power for cheap but I'm just doping my research before I even think of bolting this baby on my engine!

I just want to have a torque engine which will repsond to the pedal even in fifth gear.. I do not wish for ultimate power..(right now). If I want so I will save 10K and do what's right: B20 Ballistic with JRSC............

 

look at Inline Pro...they run 20psi on stock motors with no problems at all...daily driven with stock ecu...the motors can handle it...then its up to you to tune it or get it tuned...just a thought

 

i might get it used for a fairly good price i dont plan on boosting it to high though, but im 19 and go to school so you tell me how much money you think i have i was gonna go with a type r head for 1600 but i wont get the same results when i get a full time job ill have some cash hopefully and thats when the full blown ***** gonna come out thanks for your opinions i know some stuff cause i go to a automotive school but its mostly domestics we work on with performance stuff. they have a turbo t bucket with a 350 turboed and it blew up im not to sure if it was because of the turbo though.

 

Actually, N/A buildup costs as much or MORE once you dip into the really fast territory....

And yeah, those damn Autometer guages BLOW....the A/F ones, get an EGT and a Stoichometer first damn thing.... they are what's gonna keep your engine alive, with proper fuel and what not....

 

egt as in exhaust gas temp also what gauge tells you when your stoich i think if you boost you would probably want like a 13 to 1 af ratio because stoich is 14.7 to 1 and thats for best gas mileage and best power put together but if you know who makes a really good gauge let me know.

 

I had a turbo'd stock B16 in a CRX and it ran 14psi and it went 11.2 on the stock motor, with bogarts...

 

BOTTOM LINE!

If its bone stock and you have basic fuel management, LOW BOOST!

Properly tuned "AND YOU KNOW WHAT YOUR DOING", you can boost till your heart desires.

tuning is the key, ive seen guys use ghetto rigging mcgyver type shiznit and squeeze like 12 psi daily on a bone stock d16a, but their tuning was precise it was like an artform.

 

define "low boost"

details please

 

Low boost anything under 6 psi.

Perfect tunning is Having very accurate fuel and spark compensating for boost ,Tuning is the key, if your fuel delivery is right on point you can turn up boost without aproblem. Stock internals can handle alot, imagine the abuse a piston and rod take in the combustion chamber daily, what kills a motor is detonation. Ofcourse force feeding a motor will reduce the life of your motor but thats the price you pay to go fast.

the person i was talking about is Liam, he is in the forced induction forum i forget his username exactly but its liam??? he is the mcgyver of ghetto fuel systems but he is a genious, he ran about 12 psi daily on a d16 for almost a year, i think he turned up to 17 and blew something though, thats another thing, you can turn up boost but dont get too crazy with it.

 

The D-serie engines have a lower compression ratio than the B-series

HF 9.6:1
DX 9.2:1
Si 9.1:1
ZC 9,5:1

What's a good formula to use when calculating max "safe" boost?
For every 0.2:1 CR you decrease you can increase ...... psi????

This is all very basic but I'm trying to figure this stuff out

 

I’ve read through all of these comments on turbo charging a stock B16a. I can honestly say, that I have actually turbocharged a stock B16a sir2 motor and can tell you: Don’t do it unless you plan on upgrading your piston rings!! I even Dyno tuned my setup with 440cc injectors, 255 gph fuel pump, intercooled, on roughly 10 psi- made 250whp. Lasted only about 2 years before blowing the rings to where it smokes like crazy from under the hood. Build the motor before boosting it you’d be glad you did.

 

Those threads are probably as old as you. My old first gen b16a made more power with less boost and lasted longer, never blew it either. Then went on to my poor mans type r turbo when I wanted more..
Your first post, a 21 year old thread, typical newb...
Just giving you a hard time, thought it was funny!

 

lol! Yeah I knew it was a super old post.. but hey you never know, this new generation still might be looking stuff like this up.. actually, I’m older than the post by about 17 or 18 years probably lol. I’m moving on to my newest project though- F20b stroked, h22 euro r head, b16 lsd trans.