civic_turbo_wannabe

Im rebuilding my engine next weekend after i blew my piston rings! its a d16z6

Its got crower stage 2 cams springs and retainers
eagle rods
vitara pistons, npr rings, acl bearings
apr head bolts
cosmetic gasget 3 layer
going to be tuned on crome
440cc RC injectors
2.5 bar motorola map

considering all this what psi will be best?
Also i had a problem with it overheating before, ive got a large ali racing radiator now, will that fix the problem? Thanks

0mtber

iTrader: (2)

You can't determine your setup's limit by psi, especially without informing us of what turbo manifold, turbocharger, exhaust size, downpipe size you are running etc...

THC07

your over heating was prob exhaust gas getting into the coolent system. that 3 layer fixed that i bet.
Have a d16y8 in my driveway (not mine) running 14-17 psi on all stock internals. depending on when the wastegate isnt stuck, junk yard failure!
3layer w/ arp
440s
crome
225l
its still running, been 6 months now.

im sure others have better input, however, id say 20-22psi easy. what turbo are you using? need more info

civic_turbo_wannabe

log manifold, cast iron
T3 knock off turbo (but works very well and holds psi steady with external w/g)
big 3 n half inch plus downpipe with 2 n half inch exhaust, without decat
walbro uprated fuel pump

u think 20psi? i dont wanna over do it... again!

00b20vtecoupe

what compression are you running???

civic_turbo_wannabe

am not an expert on all this... is that from a compresson test... i wont know that until ive got it all back together

00b20vtecoupe

haha... wat compression are your pistons when you bought them you had to select a compression. like 9 or 8 and a half

civic_turbo_wannabe

lol. ohh. no idea then. on the piston box it just says Y.C.P. NO. 22108
oem no. 12111-71c51
standard size
model g16

civic_turbo_wannabe

compression is 8.5:1

does that help you?

00b20vtecoupe

yea thats nice compression for a good turbo setup i would say start out around 14 psi and see how it goes. 20 seems kinda extreme if you are daily drivering this car i wouldnt go over 15psi.

civic_turbo_wannabe

thanks pal. any other input would be great... 14-15 psi sounds gud though

STDClayton

You should probably check out the Forced Induction threads.

94c1v1cex

PSI IS COMPLETELY IRRELEVANT WHEN BOOSTING A MOTOR... YOUR MOTOR FAILS BECAUSE OF HP NOT PSI OF BOOST! sorry for the caps but i'm sick and tired of seeing people post these stupid "how much psi can i run" threads.

Civic9390

idk about boost level because of the setup But if you plan to go above 10 i would STRONGLY STRONGLY Reccomend a set of ARP Rod bolts.... that will make your rods hold stronger/. but yet thats just my 2Cents

94c1v1cex

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Civic9390 &raquo;</TD></TR><TR><TD CLASS="quote">idk about boost level because of the setup But if you plan to go above 10 i would STRONGLY STRONGLY Reccomend a set of ARP Rod bolts.... that will make your rods hold stronger/. but yet thats just my 2Cents</TD></TR></TABLE>

i didnt studder... psi is not what breaks rod bolts!!! power made by the motor is what breaks rod bolts... i can take a tiny *** 14b turbo and put 10 psi to a gsr and it will make maybe 210whp... MAYBE! i can take a borgwarner s372 on 10 psi and scatter that damn motor all over the place because its making over 3-400

civic_turbo_wannabe

well ive got arp head bolts and eagle rods are in now with ycp pistons 8.5:1 npr rings... so if i tell my tuner to boost to 20 psi... is that fine? bare in mind i have a 2.5 bar motorola map and 440cc injectors... what do you guys recommend? ... i am trying to learn... dont rip into me.... does not help one bit

94c1v1cex

not tryin to rip you man but psi is irrelevant without a turbo size... like i said a 14b on 20 psi you can drive all day... a borg warner s372 or s366 or somethin (pretty big turbo's) on 20 psi will scatter that built motor everywhere

slvrcvc93

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94c1v1cex &raquo;</TD></TR><TR><TD CLASS="quote">not tryin to rip you man but psi is irrelevant without a turbo size... like i said a 14b on 20 psi you can drive all day... a borg warner s372 or s366 or somethin (pretty big turbo's) on 20 psi will scatter that built motor everywhere</TD></TR></TABLE>He's right remember its about how much pressure the turbo builds at once not that you can get 20psi but small turbo build up gradually. Other larger turbos boost more instantly. We all know it as turbo lag or boost creep. Besides if your going to tune it the tuner should be the one telling you what would be a safe level for you but I have seen single cams running on stand alone ECU with stock internals go as high as 25psi with a t60-1. It lasted 3 months before it went but it was good for a 12 second pass on the track. (he had 780cc injectors and a OLDER Haltech But he was his own tuner)

94c1v1cex

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slvrcvc93 &raquo;</TD></TR><TR><TD CLASS="quote">He's right remember its about how much pressure the turbo builds at once not that you can get 20psi but small turbo build up gradually. Other larger turbos boost more instantly. We all know it as turbo lag or boost creep. Besides if your going to tune it the tuner should be the one telling you what would be a safe level for you but I have seen single cams running on stand alone ECU with stock internals go as high as 25psi with a t60-1. It lasted 3 months before it went but it was good for a 12 second pass on the track. (he had 780cc injectors and a OLDER Haltech But he was his own tuner) </TD></TR></TABLE>

you kinda got the jist of it. its not how fast the turbo spools... because the smaller turbo will boost more instantly, the bigger turbo as you said has lag which makes the boost come on slower.

its just the ammount of air that is moved by the bigger turbo than the smaller one that makes more power. like i said its power that hurts your motor not boost. we cant tell you how much boost to run unless you give us a complete engine setup and a turbo size... even then its not always the stereotype of what we may say... its what the motor likes. you will learn that. i drive cars all day long that are being tuned

RenegadeEG

Daily driver. I wouldnt run more than 15-17 psi. Period. A grenaded Daily Driver sucks!!!!!!!!!!

94c1v1cex

15-17 psi from a tiny dsm turbo would be fine... you people dont see the point i give up

alphalanos

LOL <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94c1v1cex &raquo;</TD></TR><TR><TD CLASS="quote">15-17 psi from a tiny dsm turbo would be fine... you people dont see the point i give up</TD></TR></TABLE>

I was reading this thread and I was about to tell you to give up hahaha

.Grimace

bigger turbo at 10psi = more air then little turbo at 10psi. This isn't hard

00b20vtecoupe

like he said above you dont have to worry about your boost levels anyway if you go to a good tuner. Hes gonna tell you whats safe and whats what when you tune.

ashb82

you should read alot about tuning http://forum.pgmfi.org/ dont just jump into 15psi start out low 6psi 8psi and tune your way up. get a wideband if you dont have one. http://14point7.com/Widebands/...1.htm has a good cheap one for a diy guy like your self it also datalogs love it.
learn to read plugs http://www.dragstuff.com/techa....html
make sure you look at all the links on the bottom.
i think this is info you want us to tell you.


Modified by ashb82 at 1:00 PM 9/20/2008