can i run stock injectors just to break in motor? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nissan240 · 09-08-2010, 08:02 PM

i have a built sr20det motor and was wondering if i can daily drive it with stock injectors and ecu during break in or until my pfc d-jetro comes in?
it turns on and runs fine, just running kinda rich.
a simple mods list if it matters so you guys get the idea
port polish head
camshafts
pistons
rods
valves
retainers
etc. etc.

Rabboni · 09-08-2010, 08:33 PM

So long as you didnt get a bigger turbo or mess with boost too much you should be fine. The huge worry is that you will lean out, and that will fry your engine fairly quickly.

nissan240 · 09-08-2010, 09:40 PM

i have a hks gtrs(gt2871). having a bigger turbo wouldnt matter though would it? i am currently running on stock boost just for break in period.

Sileighty_85 · 09-08-2010, 09:48 PM

The Cams are gonna mess around with the AFR's since the ECU aint tuned for it.

You need to not boost that engine at all untill the ECU is tuned, Ex: 10psi on a GT2871 is like 18psi on a T25 since the 2871 Flows more air, (boost is not the same between them)

nissan240 · 09-08-2010, 10:54 PM

Quote:

Originally Posted by Sileighty_85

The Cams are gonna mess around with the AFR's since the ECU aint tuned for it.

You need to not boost that engine at all untill the ECU is tuned, Ex: 10psi on a GT2871 is like 18psi on a T25 since the 2871 Flows more air, (boost is not the same between them)

so are you saying i can set my boost 0 psi and run it like that? or can i just leave my boost at 7psi and not punch the car at all? not getting ecu tuned i am actually waiting on pfc to come in, and its taking a trillion years. i just wanted to know if it would be safe to run it with stock ecu and injectors until my pfc gets in. im just getting impatient on waiting for the pfc to come in, install it then having it to break the car in like that. i want to see if i can break it in with stock ecu and injectors so when pfc comes in i can just install it and go tune it.... btw planning on getting it tune from steve shadows

he's the f*cken man to go to! if its not safe to break in my motor with stock ecu and injectors then i will not do it thanks!

nathanong87 · 09-09-2010, 09:23 AM

he's saying the second one. just stay out of boost and drive to your tuner.

Kouki_20TILL3 · 09-09-2010, 09:43 AM

Quote:

Originally Posted by Sileighty_85

The Cams are gonna mess around with the AFR's since the ECU aint tuned for it.

You need to not boost that engine at all untill the ECU is tuned, Ex: 10psi on a GT2871 is like 18psi on a T25 since the 2871 Flows more air, (boost is not the same between them)

Exactly! Don't punch the car at all during the "break-in" period. Those cams are for sure going to mess with AFR like Sileighty had said. It's gonna be hard driving that on the streets not wanting to race those hondas ^_^. Goodluck mang, and get that thing tuned before punching it.

zurud · 09-11-2010, 02:59 AM

Your brain can't control your foot. You boosting all the time anywhere and everywhere?

09-08-2010, 08:02 PM	#1
nissan240 Zilvia Addict Join Date: Aug 2006 Location: socal Posts: 690 Trader Rating: (6) Feedback Score: 6 reviews	can i run stock injectors just to break in motor? i have a built sr20det motor and was wondering if i can daily drive it with stock injectors and ecu during break in or until my pfc d-jetro comes in? it turns on and runs fine, just running kinda rich. a simple mods list if it matters so you guys get the idea port polish head camshafts pistons rods valves retainers etc. etc.

09-08-2010, 08:33 PM	#2
Rabboni Zilvia Member Join Date: Aug 2009 Location: Fairfield, CA Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	So long as you didnt get a bigger turbo or mess with boost too much you should be fine. The huge worry is that you will lean out, and that will fry your engine fairly quickly. __________________ Baling Wire-The Duct Tape Of Champions

09-08-2010, 09:48 PM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	The Cams are gonna mess around with the AFR's since the ECU aint tuned for it. You need to not boost that engine at all untill the ECU is tuned, Ex: 10psi on a GT2871 is like 18psi on a T25 since the 2871 Flows more air, (boost is not the same between them) __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

09-09-2010, 09:23 AM	#6
nathanong87 Post Whore! Join Date: Jul 2006 Location: maryland Age: 37 Posts: 5,182 Trader Rating: (6) Feedback Score: 6 reviews	he's saying the second one. just stay out of boost and drive to your tuner. __________________ IG @nathanong87 --- Night ★ Life natelife.tumblr.com

09-08-2010, 09:40 PM	#3
nissan240 Zilvia Addict Join Date: Aug 2006 Location: socal Posts: 690 Trader Rating: (6) Feedback Score: 6 reviews	i have a hks gtrs(gt2871). having a bigger turbo wouldnt matter though would it? i am currently running on stock boost just for break in period.

09-11-2010, 02:59 AM	#8
zurud Zilvia Junkie Join Date: Aug 2009 Location: evansville, in Posts: 391 Trader Rating: (4) Feedback Score: 4 reviews	Your brain can't control your foot. You boosting all the time anywhere and everywhere?