Matt-PearlCivic7790

Hey im thinking of turboing my new project car. I wanna make it a sleeper Si. I got a 1998 Honda Civic Si with a 5 spd D16Y8 SOHC Vtec. With 184000km. I was wondering what the most PSI i could run through it without having any problems until i get the money to rebuild. The motor is in good condition, and always runs synthetic oil. And i was thinking T3/T4 Turbo as well. If it helps

Midori

10 million

sirux

what an idiotic answer Midori.
Matt.. I heard 10psi would be the max
I have a 99 honda civic si with 166k km :P

Polkaroo Killa

PSI means nothing.
The question you should be asking is how much WHP can my D16Y8 handle, and the answer is approx. 200WHP (safely).
So both responses above are wrong

D.T.P

Ditto ^^
Psi has nothing to do with it. Thing is at 200-220whp rods are still "safe", if you go above the rods WILL snap.
So look for whp not psi

F8i

iTrader: (10)

The ambiguise(sp?) part on the answers, and questions, is that different size turbo's, HP rating of the turbo, compression of the engine, fuel, etc.

I 'heard' 7-8 psi boost is safe. But again... it's all circumstanial(sp?).
I wouldn't build a car on what people have 'Heard'. I'd only build on what people have actually done... with proof. Dyno's etc.
I know we had a honda SIR 2000'ish, at trent calley honda (trentvalleyhonda.com) that was/ish superchraged with a 'safe' 7-8 PSI boost.

MPR

psi does matter. try running 20psi in that motor and see what happens.

It has to do with several things, not JUST hp. You have to take into account the compression ratio, hp output, current condition of the engine, and the quality of the engine tuning...just to list a few things.

Polkaroo Killa

He asked how much PSI a D16Y8 can handle, right?
Well he should be asking how much WHP a D16Y8 can handle and then work from there (ie. PSI, compression, condition of motor, etc.)

With different turbo setups he can achieve the 200 WHP with 5 PSI of boost or 7 PSI of boost or 10 PSI of boost, all depending on other factors (size of turbo, tuning, etc.)

So by asking how much PSI his motor can handle is redundant.

Solisman

If you are sure your motor is in good health (compression test, leak down test, etc), then ok.

As for turbo choice. It all depends on how much boost you plan to run. Keep in mind that the bigger the turbo, the later it spools. Do you want a turbo that will fully spool around 3000rpm or one that can't fully spool until you hit vtec?

T3/T4 might be more than what you need for 10psi of boost or lower. If you plan on running a lot more later on down the road, then it's not a bad choice.

Does the cost of the turbo matter? a DSM turbo (T-25 or 14b) will run you about $100 or less for the turbo used. You won't see much more than 10/15psi of boost with these but they will fully spool at around 3000/3500rpm. But again, if you plan on running more boost, you'd have to upgrade, unless 20psi of boost on a E3-16g is enough for you.

MPR

It's not redundant to ask how much boost his motor can handle, because there is a limit. What that limit is, is not a set number.

The limit is dependant on how much compression, the condition of the engine, how much hp he wants to make and how well it will be tuned.

Basically we're both saying the same thing, just in a different way.

Polkaroo Killa

I think you are right

Midori

^^^ Hence why I answered the way I did. The information provided by the OP was incomplete and lacked any sort of research. There are millions of threads on D16 turbos and the answer is always the same "it depends".

Sirux: Is it not more idiotic to answer (misinformed mind you) with a simple number like 10 than sarcastically implying for more information?

F8i

iTrader: (10)

Didn't I say that? Then ya'll started bickering back and fourth about what each motor needs/Setup.
<-- Shares a beer with Midori... as we share a beer riding our harleys into the sunset.

Tyson09

iTrader: (1)

how about try 8 psi...if it works then try 9 psi...if nothing is leaking try 10 psi...still good? then go for 11...then 12....and 13.....you make it to 14 and you blow up. then come back and write up a thread telling us that a d16y8 with 184,000kms turbo'd with a t3t4 running at 14psi will blow up.

That way everyone will know the true answer

FPMotorsports

^^^^
PSI does not kill motor whp does

A turbo makes 200whp @ 15psi
B turbo makes 230whp @7psi

Make sure the motor is healthy, do a full tune up, use quality parts, a good tuner and a good rule of thumb is a Dseries vtec 200-220whp.
I have taken a D15bvtec to 251whp and 202 wtq.
It lasted 7mths....

If you have a B series vtec like a sir/gsr/type-R
I have seen all 3 motors push up to 350whp reliably.

You really have to use quality parts.... and make it as free flowing and most productive as possible.

k1e1v1i1n

^^^ thats retarded u can turn the motor off shoot 200 psi of ait into a motor and it will blow . 0 hp and it will still blow . psi alone can blow a motor .

FPMotorsports

Anything can blow a motor....
Point is... the thread creator should not have said whats the max safe psi...
As psi is not the problem.... its whp that snaps rods / blows motors.
Ofcourse too much psi is bad, driving un-tuned is bad blah blah blah...
All im trying to say is that u could blow a motor on 7psi and make 230whp
and u could boost a motor to 14psi and make 200whp and not blow....
There are many factors...
I would recomend Zeeman on this board for tuning and listen to his advice, also do some homework and see what others are runing, and get some real life examples as I can be on h-t saying i sprayed a b16 200 shot for 5 yrs and its still running bone stock... a lot of ppl talk smack...

k1e1v1i1n

why not he wanted to know most likly what do most ppl run as a base set up on that engine. it was a pretty easy question . if everyone starts at 10 psi with there stock motors then say 10 psi and thats it . easy

zeeman

iTrader: (1)

raise your hands if you've actually had a boosted setup.
The people I see posting who've actually had boosted setups are right on the money about whats right and whats wrong.

I'd have say of any of the posts, k1e1v1i1n's make the least amount of sense.

k1e1v1i1n

ding ding ding what do i win ? nope never boosted but ur just bitter